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82transam 08-31-11 02:15 PM

Write up - FC subframe swap (how I did it)
 
3 Attachment(s)
Hey guys, been meaning to do this writeup for a while, but I've just haven't had the time. I've gotton a number of pm's asking for more detail so I figured it was time to make a thread about this. A quick note, when I build a car, or do a project I like to make it look stock, so that if someone who is not familiar with the car were to look at it, they would think that it came that way. With that in mind, I wanted the wheels to line up in the fender well, I did not want the wheels to stick out so far that I needed flares, and I did not want there to be a bunch of easily seen cuts/bends/welds etc. I also did not want to go with coilovers at this time - retaining the stock FB strut/spring/sturt hat etc was important. My point is - there are other ways to do this, this is just how I went about it :)

First a bit of history. I've wanted to do a FC subframe swap on my T2 FB for many years, but for various reasons (other projects taking up my time etc) I just never go around to it. About this time last year I decided it was time to start getting serious about it and started doing research. Like many of the people pm'ing me I found that the information on here about the swap is very scattered, and many of the build threads were never updated with the end result. It wasn't clear if those people just didn't finish the thread, or if the swap itself had never been completed. I knew there were at least a few people who had finished the swap, but in many cases they were on track only cars, or widebodies or some other setup where it didn't matter as much if it looked stock - it just needed to work. Anyway, after much comparison between the FB parts and FC parts, it became obvious that this was going to work, and work well, so earlier this year (end of March, early April) I went ahead and started wrenching. The end result is exactly what I wanted, you get an easy way to mount the FC engine/steering/brakes and the way I did it, you still retain the abilty to use FB shocks and springs (I already had a good set of Eibach springs and Tokico blues) The wheels don't stick out of the fenders (although the track width is wider than the FB, they don't rub) and other than a few welds that you wouldn't notice unless you were really looking, it looks like it belongs there!

Ok, onto the pics and info. Just a note, this is not intended to be a step by step writeup. If you are planning to do this work then you should already be familiar with how to take the front end of an FB apart, and should be able to cut/weld/modify things. I'm really just showing how I went about the swap, and to give you guys some ideas on how to go about it. Again, there are other ways of doing this, but this is how I went about it :)

Pffew this is a lot of typing lol.

Ok, we'll start with the subframe (good place to start eh? lol) The Subframe needs to be moved back 1 inch. If you were to bolt it up using the existing front hole in the subframe and existing front stud on the FB it will sit too far forward and the wheel will look silly and rub the fender well. Seems that many guys on here just remove all 4 studs from the FB and replace them with bolts in the correct spot. While there is no way to get around the need for a new bolt or stud for the rear of the subframe, you can use the existing front stud if you modify the subframe itself. Again going with my theme of making it look stock, I wanted to keep the modifications to the FB as minimal as possible, this means keeping the front stud. So, to get the subframe moved back the 1 inch it needs to be, I simply drilled a new hole 1" forward on the FC subframe. Now if you look at a FC subframe you'll see that this is dangerously close to the front edge of the frame itself. So once I drilled the hole I made a new extension (whatever you want to call it) out of 1/4" steel that extends the subframe forward and reinforces the whole area. I also made a similar tab out of 1/8" steel to go on the bottom to level out the whole area (the front of the subframe has a stamped curve to it, hopefully the pics make this clearer) The end result is a very solid section of metal, and with some careful grinding and welding it smoothed out to the point that it almost looks stock.

The rear needs some work as well, If looking at the car from the side, the FB frame rails are straight, where the FC ones get thicker and dip down in the back near the firewall, and as a result the FC's subframe is not level (if you look at the subframe from the side its not flat across the top). You will need to construct some large spacers around the rear mounting holes on the FC subframe so that the subframe is level when bolted into the FB. There is some debate on here about how large that spacer needs to be. My initial measurements came up with 1/2", which is what I went with, but if I were to do it again I'd go with 5/8". The 1/2" spacer has worked out fine, but in reality it should be a bit taller. I know Peejay went with a 1" spacer and said it sits flush in his FB, not sure why there is such a difference between our two FB bodies, but either way, whatever gets the thing in there level is what you should make ;) Also, Peejay welded his spacer to the body itself, I welded mine to the subframe, again I wanted to keep the FB body as untouched as possible. (within reason obviously)

https://www.rx7club.com/attachment.p...0&d=1309717637

Once you have all the above work done to the subframe then its time to do some work on the FB's body. If you're going the same route as I did then you will leave the front FB stud in there, and just remove the rear stud. It's just held in with a few welds, cut them and out it comes. You will then need to get out of a set of duckbill pliers, or a hammer and dolly, or just a hammer and a block of wood, whatever you prefer, and do some bending on the pinchweld along the bottom of the FB's frame rail. You will see in the pics where you need to bend, its just a few spots around where the FC subframe bows out, nothing major. Once those areas are bent you can put the FC subframe on the FB's front studs and hold it there with some nuts (be sure to support the rear with some stands or something as well) If you've done your measuring correctly then it should be lined up and sitting in there correctly. Make sure you measure constantly throughout this process to make sure its sitting in there straight and level! Now you can go ahead and mark where you're going to drill for the rear studs/bolts. Be warned, the new rear studs go basically right through the middle of where the stock FB steering box and idler arm go, there are multiple layers of metal and some tubes to support the idler arm/steering box. How you go about drilling these holes is up to you, just be careful not to go balistic and damage a bunch of surround metal or yourself! I only say that because I was using an incredibly powerful corded drill with a unibit to get through the FB box's support tube, it caught and almost broke my wrist from the force lol, so be careful. Anyway, once the hole is drilled where you want it, its time to reinforce the area. I used 8" long 1/2" grade 8 bolts, so get some thick tubing that those bolts will slide through (I found it at Lowes) and some 1/8" steel plate. You basically want to have the tube go through the frame rail to keep it from collapsing when you tighten the bolt, and you want the 1/8" plate on the top of the frame rail to support that tube, and keep the sheet metal from deforming. Once that is all weded together and painted to prevent rusting go ahead and bolt the subframe in! Double check your measurements etc and thats literally it! Now it's time to put the rest of the puzzle pieces in place....

http://i847.photobucket.com/albums/a...0320011528.jpg

I don't have a pic offhand of the bent sections of the frame rail, I will get one and post it, its very simple though so don't sweat that part :)

Ok so the subframe is in, now what? Well, the FC control arms, spindles, hubs, brakes (the FB master cylinder runs the T2 brakes just fine, and presumably the NA FC brakes as well) and steering rack are all just bolt in items. Obviously now is a good time to replace worn parts like ball joints tie rods and bushings, sandblast and paint things etc, but thats entirely up to you. A quick note, the S4 (86-88) control arms are preferable because they have replaceable ball joints, but the S5's will work as well. Also, if you're running a re-speed sway bar, which already has solid heim jointed links then all you need to do is make a simple brakcet to attach it to the control arm. If you want to run the FC sway bar then you will need to make some way to mount it to the FB body. I did not go this route (I used the re-speed bar) so I'm not 100% familiar with the mods needed, however the "legs" on the FC sway bar are shorter than that of an FB bar, so it needs to be mounted closer to the subframe to work. I know its been done on several other swaps, and is probably just a matter of drilling and reinforcing a few holes in the FB frame rail and bolting it in. So once all that is taken care of, you have the steering colum and the strut assemblies left to build, and you guessed it, more cutting and welding!

Attachment 717152

Both the strut assemblies and steering column are similar in that they use FB "upper" parts and FC "lower" parts. There are many ways to go about the suspension, but what I did was take a set of old blown FC shocks, and cut pretty much right below the spring perch. Once you cut all the way around the strut itself will come out and you're left with basically a tube with mounting ears on it. Now take a set of FB spindles and CAREFULLY cut the spring perch off. You just want ot cut the welds, do not cut into the strut tube itself! You want to use both the spring perch and strut tube so don't damage either of these parts. Once the spring perch is off grind the rest of the weld smooth on the strut tube so that the perch can slide past where it used to sit. Next cut the spindle portion off so that you're left with just the tube part of the FB assembly. Conveniently the inner diameter of the FC tube you have, and the outter diameter of the FB tube are the same so they slide together nicely, almost as if it was made for this lol. Basically what you want is the tube to be the same height as the FB's original one (so the FB strut insert will go in correctly) and the spring perch to be the same distance from the middle of the spindle (so the bottom of the spring is the same distance to the middle of the FC spindle, as it was to the middle of the FB spindle) this ensures you have the same ride height you did before. Once all that is figured out then you just weld it all together. I drilled a few holes in the side of the FC tube so I could do some rosette welds, along with the bead I ran along the top, just to give it some extra strength. The end result is a FB strut/spring/spring perch/strut top with the mounting ears to bolt it to the FC spindle. There are other ways to do this obviously, but I'm very happy with the result!

https://www.rx7club.com/attachment.p...9&d=1309717637

The steering column: You will be using mostly FB parts for this, the FB steering tube/support and the upper half of the FB steering column (you just drill out the plastic shear pins and leave the lower half of the column in the stock box and toss it) You will then need the lower half of an FC steering column (again held with similar shear pins) as well as a short section of the FC's steering column tube with its carrier bearing at the bottom. The FB and FC columns are almost the same size, but not quite close enough to just slide right together (can't be too easy now can it lol) so you will need to take a bit of material off the FC's lower column so that it slides into the FB upper. I used a dull flap wheel on a angle grinder (dull so that i didn't take too much off at a time) and just slowly ground away until it was right. I decided to that there is enough collapsable stuff built into this system that I didn't need to bother making the column collapsible (if you want to, go right ahead) so I just welded the two halves together. Once the column is one piece (be sure to measure 3 or 10 times before welding lol) then you put it into the FB upper and weld the FC lower bearing and its tube to the FB part. They are the same diameter luckily so its not difficult. The only thing left at this point is making a way to hold the bottom of the column in the car. If you have an 84/85 then there is a reinforcment plate around the hole in the firewall that the colulmn goes through, it wouldn't take much to make a small brakcet off two of these studs. If you're doing this on a 83 or older (like me) then you need to get more creative. I made a bracket that goes on two of the brake booster studs, and used the bracket off the bottom of the FC column, to bolt it all together.

https://www.rx7club.com/attachment.p...1&d=1309717637
http://i847.photobucket.com/albums/a...0325011745.jpg
Attachment 717153
Attachment 717154

Hopefully that answers some of the questions you guys have about this swap, and gives some alternate methods on how to go about doing it. I completed this swap in the beginning of April and have put several thousand miles on it already and so far no issues at all! Other than the pair of 8" long 1/2" grade 8 bolts and the few pieces of flat stock and tubing needed to reinforce the frame, everything comes from the FC donor car. If everything from the FC is usable then you really don't need to buy much. In my case I spent some time sandblasting and painting the parts, and replaced the bushings, ball joints, tie rod ends and tie rod boots. Otherwise it was all stuff I had. In the end I spent less than $400. I also chose to use a 15:1 rack and depowered it, there is a thread in the FC section on how to properly do this, it involved taking the rack completely apart, removing a bunch of seals and running a few welds on the pinion shaft.

Any questions, fire away!

Sean

84 GSL 08-31-11 07:46 PM

Life saver. This thread saves my drift project. That is all

HadaGSL-SE 08-31-11 11:26 PM

Awesome write up!

If you could post the a link to the info on the de-powering I would appreciate it.

Also what wheels are you running and how are you compensating for the difference in width front to rear?

rx71king 09-01-11 12:27 AM

good job......more pic's...

Kentetsu 09-01-11 06:03 AM

Beautiful writeup man! Nice work...

peejay 09-01-11 07:20 AM


Originally Posted by HadaGSL-SE (Post 10769547)
Awesome write up!

If you could post the a link to the info on the de-powering I would appreciate it.

Plug the two/three lines at the input, take the two hardlines on the rack (the brake line looking ones) and loop them together, plug the ends that go to the spool valve.

Simple. Takes longer to say than to do.

There's another way where you disassemble the rack and physically damage or remove the piston, but this is overkill.



Also what wheels are you running and how are you compensating for the difference in width front to rear?
FC is the same as GSL-SE.

82transam 09-01-11 07:49 AM

Thanks guys! I agree more pics would be helpful, I will see what I can get.

I'm running FC vert wheels with 20mm spacers on the rear wheels to keep them even visually. The track width on the FC is a tad wider, so if you leave the rear untouched it gives it that sunken battleship look lol

I chose to the overkill method of depowering the rack, you basically take it apart, cut out a few seals and weld the pinion shaft together (its two pieces that act as a valve and can cause a bit of slop with no fluid in there, or so they say...)

The thread i used to de-power it was by a guy called Titanium TT and it was on the teamfc3s forum (I think) which currently is down (I read it years ago) but its a common thing for the miata guys to do and there is a link to it here: http://www.flyinmiata.com/tech/depower.php
It's basically the same process, but feel free to ask questions if you want, I've done several of them :)

Edit: just looked through the miata link and I noticed they don't go as far as the one I did, there is no mention of welding up the pinion shaft, or removing the seal from it either... Damn I wish that writeup I used was still around... I'll search my computer to see if I still have pics of what I did..

Edit2: Lots of good info in this thread about the steering de power: https://www.rx7club.com/showthread.p...t=welded+quill Still not quite as detailed as it could be, but getting better :)

Glazedham42 09-01-11 11:58 AM

How tight is the steering now? Did this swap eliminate your wondersteer?

82transam 09-01-11 01:08 PM

Incredibly tight, feels like a new car, it's actually got less play in it than my Impreza... Wondersteer is just a bad memory lol.

twinkletoes 09-01-11 02:05 PM

:bigthumb: Next time my motor is out I'm doing this or the re-speed kit. Awesome write up!!!

82transam 09-01-11 02:20 PM

Thanks for the positive feedback everyone!

twinkletoes - the only downside for you would be the loss of the 4x110 lug pattern. I've been doing quite a bit of thinking and comparing of parts to see how I can make this work on my other FB, which I'd like to keep 4x110 and 12a. The 12a would be doable, but as for keeping 4x110 I haven't come up with anything very good yet unfortunatly...

Anyway, glad everyone liked the writeup, guess its time to get working on the S5 T2 into FB wiring guide I've been meaning to do...

twinkletoes 09-01-11 02:41 PM

DAMNIT!!! lol I dream of having no wondersteer haha.

HadaGSL-SE 09-01-11 04:05 PM

Thanks again for the write up and getting back to us on the questions. Do you have the RE-Speed axles for the 5 lug conversion in the rear?

nofords 09-01-11 10:09 PM

That is somewhat different way of doing things.

Good job. Couple things that I wouldn't have done from a structural perspective but it should be ok if you don't beat on it too much.

82transam 09-02-11 07:39 AM

nofords: What do you mean? If you think something I did isn't safe let me know and I'll consider changing it.

hadagsl-se: Yeah I have the re-speed 5 lug axles and big brake kit in the rear. I got the GSL-SE length axles, but still needed 20mm spacers to bring the track width even (or very close at least) to the front.

twinkletoes: The best way to keep 4x110 and front cover engine mounting would definatly be the re-speed kit.

nofords 09-02-11 09:03 AM

I wouldn't have welded a cantilever piece of steel to the front of the subframe. That particular point of the frame was not designed to handle loading beyond the original bolt hole.

For a really crude analogy, you've glued a chunk of corrugated cardboard (that 1/4" steel tab) to a piece of 2ply kleenex (the pinch weld) and have somehow made this area "stronger" than the kleenex it's welded to. What i am trying to get at is that the existing hole in the subframe is in the center of the crossmember. That area has the entire boxed cross memeber to resist the strain and lateral force. Now, you've moved it outside of that area and cantilevered the forces off the main "frame".

The other item was your single shear sway bar mount. Although this may work in cycling the suspension, what you'll find is that your first pothole will bend that tab. It's best to get yourself a set of the factory FC sway bar tabs and use those. I have the same links that you do and use the stock tabs, with no other hardware.

I also used the 2nd gen sway bar too. As long as you haven't welded to the one you are using, you'll be ok. Spring steel is heat formed and you will loose spring tension and overall strength if you weld to it, or apply any other high heat to it.

Like i said, there isn't anything completely incorrect with your installation, just that a couple of items could have been made stronger.

82transam 09-02-11 10:16 AM

Interesting points about the subframe modifications, I'll have to keep an eye on that area. I've already put several thousand miles on it with no issues so far. But again this is a street car, and other than some rough roads it sees very little abuse.

The sway bar is unmodified, and the reason I made the sway bar bracket the way I did is because that is how the re-speed unit comes, it is just a small bracket (looks to be 1/16" steel, i made mine from 1/8) with a single plane. I figured Billy had done his homework and making mine from 1/8" would be plenty strong enough. Would be easy enough to redo though if a problem does arise.

nofords 09-02-11 03:24 PM

That's cool.

Most (if not all) installations of rod ends must be in dual shear, not single. It's just good practice, and its a requirement by all worthy racing sanctioning bodies should you ever decide to go auto-x or something.

If this is what re-speed does, and your comfortable with it, that's fine and go ahead.

82transam 09-06-11 08:41 AM

^Makes sense to be double shear, I thought it was kinda odd when I got the re-speed bar initially but figured Billy had done his homework so I just copied that. I've since parted an FC that has the OEM sway bar bracket, so I'll probably be using that.

Thanks again for the input.

84 GSL 09-08-11 11:48 AM

This should be archived

peejay 09-08-11 11:51 AM


Originally Posted by nofords (Post 10771791)
That's cool.

Most (if not all) installations of rod ends must be in dual shear, not single. It's just good practice, and its a requirement by all worthy racing sanctioning bodies should you ever decide to go auto-x or something.

if a rod-end is mounted in single shear, it should have a large washer on the free end, simply so that IF the end comes off of the ball, it can't separate.

That said, rod ends on a street car sucks.

82transam 09-08-11 01:08 PM


Originally Posted by 84 GSL (Post 10778889)
This should be archived

Thanks! That means a lot.

Peejay - not a bad idea with the washer. Surprisingly these links don't make any noise, although I'll agree, rod ends on the rear axle suck majorly on a street car, so noisy...

82transam 12-29-11 08:15 AM

Just wanted to give a quick update on this, I've put another 1500 miles or so on the car since posting this and no issues as of yet. Not sure exactly how many miles I've put on the setup so far, but close to 3000 I'd guess. Really my only complaint (and its common to lowered FC's, including the FC I had for a while) is that I'm getting some bump steer (at least thats what I think it is) I'll be picking up the Mazdatrix bumpsteer eliminator kit over the winter, hopefully that solves the problem as it's really my only complaint at this point.

Other plans are to go back and redo the strut assemblies I made, really only because I came across some parts in much better shape (you can see in the pics, the parts I used had a ton of rust) Now that I know the setup works I can just copy it and make a cleaner/better looking part.

On a side note, I recently upgraded my welder and finally got MIG shielding gas. The difference between MIG and flux cored is night and day, I wish I had upgraded it years ago. Almost makes me want to go back and redo this whole thing to make the welds prettier lol

t_santos 02-05-12 03:37 PM

That is beautiful :-)

guitar_blues 02-06-12 10:34 AM

awesome writeup x2 on archiving!

t_santos 02-07-12 05:06 PM

I want that steering column, make me one :-)

t_santos 02-07-12 05:55 PM

I want one of the steering column like that. PM me or email me, I will send paypal payment if you can make me one. t_santos11@yahoo.com

t_santos 02-07-12 05:57 PM

I want one of the steering column, PM me and let me know how much for you to help me make one.

82transam 02-08-12 08:17 AM

^Wish I could help you man, but I don't have enough time to make another one at this point. I've barely had any time to work on any projects. Really if you have an angle grinder/cutoff wheel, a welder and a tape measure you can do it! :)

peejay 02-08-12 05:02 PM


Originally Posted by 82transam (Post 10970852)
^Wish I could help you man, but I don't have enough time to make another one at this point. I've barely had any time to work on any projects. Really if you have an angle grinder/cutoff wheel, a welder and a tape measure you can do it! :)

I've been thinking of making a "bolt in kit" for the FC subframe swap if you wanted to do it "Peejay Style". You'd get mount tabs for the rear mounts that would BOLT to the idler arm and steering box mounting points, modified strut tops to use FC struts, and altered motor mounts for FC engine fitment.

The problem would be that key to my swap was using an FB power steering column. For some reason, people throw these away and downgrade their cars to the incredibly slow bus-like manual steering, where you practically have to hand-over-hand the thing just to change lanes. The P/S box is SO much more nice.

82transam 02-08-12 07:59 PM

I say go for it, kinda weird that you mention using the idler/steering box mounting holes along with some tabs as I was actually thinking about adding that exact thing to mine to add some extra strength. Great minds think alike apparently (not sure what our excuse is lol)
It's been a while since I looked at the ps column, but it looks very similar to a stock fc column at the bottom end. I bet some kind of modified intermediate shaft could be used to make it all work with an unmodified ps column... Something to look into for sure

peejay 02-10-12 12:00 PM


Originally Posted by 82transam (Post 10971695)
It's been a while since I looked at the ps column, but it looks very similar to a stock fc column at the bottom end. I bet some kind of modified intermediate shaft could be used to make it all work with an unmodified ps column... Something to look into for sure

I'll try to rehost the pics I took. The FB column fits like it's supposed to (well, duh) but the FC column does not fit the dashboard, and the FB headlight/wiper switch can't be made to fit the FC column. The lengths are significantly different as well, and the FC column puts the ignition switch halfway into the dashboard, very hard to turn the ignition key. The steering wheel wound up sitting extremely close to the dashboard as well, exactly the opposite of better.

I used S3 and S4 components for this.

Electronblue 02-26-12 07:34 PM

just got my FC subframe today, I'll post some pics as I go as well.

peejay 03-04-12 03:26 PM

4 Attachment(s)

Originally Posted by peejay (Post 10974088)
I'll try to rehost the pics I took. The FB column fits like it's supposed to (well, duh) but the FC column does not fit the dashboard, and the FB headlight/wiper switch can't be made to fit the FC column. The lengths are significantly different as well, and the FC column puts the ignition switch halfway into the dashboard, very hard to turn the ignition key. The steering wheel wound up sitting extremely close to the dashboard as well, exactly the opposite of better.

I used S3 and S4 components for this.

Attachment 717155

Attachment 717156

Attachment 717157

Attachment 717158

Rest of pics here: http://s1073.photobucket.com/albums/...%20Conversion/ All images I have are up there.

Hope this helps.

twinkletoes 05-26-12 07:33 AM

Know of if anybody has done this while using the 12a or GSLSE 13B engine mounting style(front cover), but made the mount "wrap around" the engine to mount to the FC subframe. I think it could be possible. I'm really considering doing this swap now.

I just would have to figure out how to mount it with my GSLSE front cover. I should've built a damn turbo motor!!

twinkletoes 05-26-12 07:54 AM

"Pull the engine apart, put in a GSL-SE center housing, and use FC driver's side motor mount brackets on both sides. They will need alteration for engine position (redrill mount hole) on the driver's side, and minor redrilling to bolt to the engine and some extension on the passenger side.

This is how I have a GSL-SE engine on my FC subframe"

That quote is from Pele from another post I found. I found my answer. So my GSLSE engine will work. Now I just need to find a good reliable welder that will work for beer and food... I'm considering this even more now. hmmmmm

84 GSL 05-26-12 04:11 PM

Peejay, i looked at your album on your album, and it looked like there was a good bit of "massaging" done to your inner fender well haha. I may wind up cutting my inner fenders out and using trailer fenders just for the sake of clearance..plus I could possibly wind up with some neat little modified knuckles.

Also, I will attempting this with a ps FB column to start with. I'll let you know how it goes.

82transam 05-29-12 07:46 AM

I'm interested to see what you guys come up with using the PS column. I had the chance to get one about a year ago but didn't jump on it so I didn't get to try it for myself. Honestly though it would have been just to see how it worked as the route I went is still working great.

twinkletoes: I'm sure you could make the front cover mounting system work if you took enough time to fabricate a mounting system, but aren't you already running an FC engine in your car? The other option is that quote you found of Peejays, the SE center iron can be made to work similarly to an FC engine so you have some options. There's few downsides to the swap, although you'd lose your coveted wheels in the process... :)

twinkletoes 05-31-12 06:24 PM


Originally Posted by 82transam (Post 11106112)
twinkletoes: I'm sure you could make the front cover mounting system work if you took enough time to fabricate a mounting system, but aren't you already running an FC engine in your car? The other option is that quote you found of Peejays, the SE center iron can be made to work similarly to an FC engine so you have some options. There's few downsides to the swap, although you'd lose your coveted wheels in the process... :)

Yes, that was peejays quote. Not pele like I said. Engine is S5 TII rotor housings with GSLSE irons ;). So, i'll have to copy peejays solution. I know. I'm willing to lose the wheels for the benefits though.. i'll probably run some mint fc vert wheels like you till I find and save up for something more fancy.

82transam 06-01-12 07:40 AM

Yeah the benefits outweigh downsides for sure. The Vert wheels are nice and light too which is always a good thing.
What shock/spring combo are you planning on using?

twinkletoes 06-01-12 09:03 AM


Originally Posted by 82transam (Post 11109408)
Yeah the benefits outweigh downsides for sure. The Vert wheels are nice and light too which is always a good thing.
What shock/spring combo are you planning on using?

11 lbs per wheel IIRC. Very light. Where did you get the rear 20mm spacers? I'd have to make my struts like you did, but I would be using my race re-speed coilover setup while using their camber plates also.

I'm becoming more hesitant on doing this though. I'm completely confident in my mechanical abilities, but not my welding abilities. I don't know if this would be a good project to start my own welding. Am I probably right? lol I don't think that would be safe. How many man hours do you think this took? Just measurements, subframe mounting, steering column mods and getting it "done". I might just go to a custom shop and spend 1000-1500$, show them this thread and what I wanted and let them do it.. Lets say I got charged 1500$. It'd be the same price as a re-speed setup, but I get turbo brakes and 5x114.3 for the same price.. decisions.. then I'd still have to put in price of new GSL rear end, new moser axles, bb rear kit, brake componets and new 5x114.3 wheels :(. lol

:scratch:

82transam 06-01-12 09:58 AM

The 20mm spacers are from ebay, just make sure they are hub-centric in the correct size for FC wheels (I forget the # off hand, but it's easy to find on here) and you'll be all set. I should note that the longer studs they came with were crap (too short and shotty looking threads etc) so I went with a set of Moser studs (2.5" if i remember right but it's been a while)

Personally I would not have a shop work on my car for any project - ever. I don't trust them, and in the end I use each project as a learning experience:). The only time my car is in a shop is for inspection and that's for the obvious reason that I'm not a state approved inspection facility lol.

Having said that, I've got hundreds of hours of metal work and welding under my belt, I wouldn't want something as critical as this to be my first welding project. Don't let that stop you though, get some scrap steel and practice welding. After a few hours of practice you'll be good to do this project. Nothing is really visible so as long as the welds are strong and have good penetration they don't need to be pretty.

As for time invested, I worked on the pieces on and off over the course of a month, then actually had the car apart for something like 2 weeks (it might have been longer I forget) but it also snowed on me during that time and this was all being done outside so that held me up. As far as an actual # of hours figure I couldn't really say...

Obviously it's your car and your call, but my only regret with the FC subframe was not doing it in 2006 when I was building the car in the first place :D

peejay 06-01-12 06:33 PM


Originally Posted by 84 GSL (Post 11103749)
Peejay, i looked at your album on your album, and it looked like there was a good bit of "massaging" done to your inner fender well haha. I may wind up cutting my inner fenders out and using trailer fenders just for the sake of clearance..plus I could possibly wind up with some neat little modified knuckles.

Also, I will attempting this with a ps FB column to start with. I'll let you know how it goes.

The "massaging" was strictly so I could run the Escort strut tops and have 195/60-15 tires clear the inner fenders at full compression and full lock. If you're not running tall tires like that, you will not have a problem. (Fender massaging is needed with these tires even with the stock location)

twinkletoes 06-03-12 08:03 PM


Originally Posted by 82transam (Post 11109499)
The 20mm spacers are from ebay, just make sure they are hub-centric in the correct size for FC wheels (I forget the # off hand, but it's easy to find on here) and you'll be all set. I should note that the longer studs they came with were crap (too short and shotty looking threads etc) so I went with a set of Moser studs (2.5" if i remember right but it's been a while)

Personally I would not have a shop work on my car for any project - ever. I don't trust them, and in the end I use each project as a learning experience:). The only time my car is in a shop is for inspection and that's for the obvious reason that I'm not a state approved inspection facility lol.

Having said that, I've got hundreds of hours of metal work and welding under my belt, I wouldn't want something as critical as this to be my first welding project. Don't let that stop you though, get some scrap steel and practice welding. After a few hours of practice you'll be good to do this project. Nothing is really visible so as long as the welds are strong and have good penetration they don't need to be pretty.

As for time invested, I worked on the pieces on and off over the course of a month, then actually had the car apart for something like 2 weeks (it might have been longer I forget) but it also snowed on me during that time and this was all being done outside so that held me up. As far as an actual # of hours figure I couldn't really say...

Obviously it's your car and your call, but my only regret with the FC subframe was not doing it in 2006 when I was building the car in the first place :D

Thinking about it now I might just live without the spacers. If I go with FC vert wheels they won't be on for long. Just to get her rolling again.

I know, I know. I've only had my car in the shop to be tuned, painted, or aligned..other than that it's me or my buddies helping work on car. I might just pickup welder next week and start praticing.

Good to hear about you regretting it not doing it sooner lol. I'll get it done. Might take awhile, but I'll get there.

What type of welder you using? How many amps is it? I'm trying to look at what to start with, but will be good enough of a welder for one welding becomes second nature... and I can use a argon hookup? Thanks!

82transam 06-04-12 08:33 AM

Good, glad you decided to do it yourself :)

My welder is nothing special - a Lincoln 220 volt 175 amp MIG that I bought at Lowes in 2004. I've gone through hundreds of lb's of wire in that time and it's never let me down lol. I converted it to a true MIG setup (with shielding gas, was using flux cored previously) last fall and again, only regret not doing it sooner. For cost's sake you might want to run a spool or two of flux cored through it for your learning stages. It will give you a good idea of what you're doing without wasting the gas, then convert it to gas before you actually do the sub frame swap. The welds are much cleaner looking with the gas.

I'd like to get a TIG someday and be able to work with aluminum, but otherwise this welder has done everything I've ever needed it to.

twinkletoes 06-04-12 10:37 AM


Originally Posted by 82transam (Post 11112562)
Good, glad you decided to do it yourself :)

My welder is nothing special - a Lincoln 220 volt 175 amp MIG that I bought at Lowes in 2004. I've gone through hundreds of lb's of wire in that time and it's never let me down lol. I converted it to a true MIG setup (with shielding gas, was using flux cored previously) last fall and again, only regret not doing it sooner. For cost's sake you might want to run a spool or two of flux cored through it for your learning stages. It will give you a good idea of what you're doing without wasting the gas, then convert it to gas before you actually do the sub frame swap. The welds are much cleaner looking with the gas.

I'd like to get a TIG someday and be able to work with aluminum, but otherwise this welder has done everything I've ever needed it to.

Sounds like a good plan. Is the full 175 amps necessary for this subframe job? Or would a welder with a max output of 130amps be sufficient? I'd like to get some scrap steel and pick up a welder and start praticing tomorrow lol.

82transam 06-04-12 11:22 AM

Lol go for it, welding is fun (to me at least). If you go the same route as I did with that extended tab off the front (for the front mounting point) then the thickest you'll need to weld is 1/4". I forget how much my welder can handle, but as long as the 130 amp can do that then you should be all set. I believe it could, but you better check to make sure :)

In case you didn't read all the replies in this thread, Nofords raised some concerns about how I did that mounting tab. I've had 0 problems with it after thousands of miles of use, but I have toyed with the idea of reinforcing it at some point as a "just in case" safety measure. Just thought I'd point that out so you can decide for yourself how you go about it.

twinkletoes 06-04-12 12:01 PM


Originally Posted by 82transam (Post 11112693)
Lol go for it, welding is fun (to me at least). If you go the same route as I did with that extended tab off the front (for the front mounting point) then the thickest you'll need to weld is 1/4". I forget how much my welder can handle, but as long as the 130 amp can do that then you should be all set. I believe it could, but you better check to make sure :)

In case you didn't read all the replies in this thread, Nofords raised some concerns about how I did that mounting tab. I've had 0 problems with it after thousands of miles of use, but I have toyed with the idea of reinforcing it at some point as a "just in case" safety measure. Just thought I'd point that out so you can decide for yourself how you go about it.

I was looking at the lincoln pro mig 140 now. Says it's capable of 5/16" steel. Seems like a good welder. Mig/flux core, uses 120 volt plug. With the lincoln mig 180 I would need a 230 socket which I don't have..

Or I could go with this.. http://www.harborfreight.com/170-amp...der-68885.html.

I'd save 300$, but the "get what you pay for" probably comes into play. Harbor freight usually has good warranties though. Might not be bad for now.

Yeah, I seen Nofords mention that. I'll probably still go along with what you did or just drill a new hole and reinforce it like adsy did on his car. I'd rather go the route you did though so it's a little simpler and don't have to cut up the frame rail.

82transam 06-04-12 03:30 PM

Yeah that was my thinking, the less I had to modify on the car itself the better. Not sure why I didn't think of attaching it to the steering box/idler arm holes though lol. Oh well.

I tend to avoid harbor freight for anything other than consumables (cutoff wheels etc) but it's your call. I'm sure it would work long enough to get this job done at least lol.

Directfreak 06-04-12 03:57 PM


Originally Posted by twinkletoes (Post 11112720)
I was looking at the lincoln pro mig 140 now. Says it's capable of 5/16" steel. Seems like a good welder. Mig/flux core, uses 120 volt plug. With the lincoln mig 180 I would need a 230 socket which I don't have..

Or I could go with this.. http://www.harborfreight.com/170-amp...der-68885.html.

I'd save 300$, but the "get what you pay for" probably comes into play. Harbor freight usually has good warranties though. Might not be bad for now.

Yeah, I seen Nofords mention that. I'll probably still go along with what you did or just drill a new hole and reinforce it like adsy did on his car. I'd rather go the route you did though so it's a little simpler and don't have to cut up the frame rail.

Gonna Buy a welder, tools, learn to weld, and then go through the process
of upgrading to a "used" car's steering. On top of all that, you'd lose your beautiful wheels.

For your situation
- get the respeed steering kit and call it a day. You don't need TII brakes, unless you are REPEATEDLY braking hard, as in a road course. Remember the limiting factor is tire grip. I am sure you can lock up your stock brakes all day as well.

Just good ventilated rotors, upgraded pads, and SS brake lines. TII brakes are not going to stop you any faster, they will just prevent fade over stock.

I *wish* I had gone that way in the first place.


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