Single Turbo RX-7's Questions about all aspects of single turbo setups.

Finally started my conversion..i know ill have some questions

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Old May 31, 2015 | 06:02 AM
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Finally started my conversion..i know ill have some questions

Well I finally started my conversion to single yesterday.
It was a weird feeling tearing into my fully working, reliable sequential twin system which i had DDed for the past 5 years..

It was weird pulling things out with little regard, in such a way that I would have no idea how it went back in if it ever needed to, lol. Kind of bitter sweet. And there's sure no going back!

I got the twins out this afternoon...what a mission that was. Im just glad I don't need to put that thing back in!
It was some unexpected things that really took the time for me. The heat shielding was hellish, the lower nut/bolt on the rear of the Y pipe was a real pain..and one of the oil drains was a huge pain in the ***.
The down pipe and actual turbo/mainfold bolts/studs were a cake walk compared to those above annoyances..
Thankfully, everything came off with no stripped nuts or bolts..funnily I used the Y-pipe as an extension/pipe on the end of the (short) breaker bar I had to break the down pipe & turbo studs/bolts .

Heres my car pre conversion in my high tech garage space ..yea need some work on the exterior..its been driven rain or shine for years now..


engine bay just before tearing into it...


turbos out..


and if a picture could explain how I feel about the experience of removing those turbos!



Ill be back working on it again tomorrow..im sure ill have some questions!
cheers
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Old May 31, 2015 | 12:20 PM
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Well, where are the pics of the new hardware that's going in? wtb turbo ****.

The garage door opener is quite ironic too haha
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Old Jun 1, 2015 | 08:52 PM
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So i got some more work done on the car yesterday...
Here are a few pics..I wanted to post some turbo pics but now that going to need to wait..more on that later
Here is a box of stuff...FFE step-up kit, plus some sealant & ID 2000 injectors (48mm with 14mm o-rings)




FFE rail / FPR. the gauge is metal for anyone who cares. (I read someone complained it was crappy and plastic)


injectors


and for anyone wanting to install the id2000 injectors with FFE rail, here are some better pics to show you what you need to do to the injectors.
standard ID2000, 48mm x 14mm o-ring injector;


you need to clip the black bit of plastic off..in the below pic you can see im in the process of removing it..



heres what it will look like with the plastic bit & the standard o-ring removed..ready to install the two new o-rings


o-rings installed and lubed



installed..everything fit perfectly. Nothing but praise for their products.


I also got my oil feed banjo installed..didnt put the oil feed hose on it yet because im not sure how long to make due to not being able to mount my turbo


OK question time - the fuel hose supplied with the FFE kit is a bit bigger ID than the stock fuel return line that goes from the bottom of the FPR to the stock hardline.
Should I just clamp it on there really good with a couple of fuel line t-clamps or am i missing something?
Also, do people generally run the return line to the closest stock hardline, or skip that one and run it back to the firewall? (Asking because the FFE kit comes with like 3ft of hose, and you only need maybe 20cm to hook it back up to the closest stock hardline.

Also the thing on the start of the primary rail. Is that the FPD?

I really wanted to post a pic with the manifold / turbo sitting in the engine bay but I ran into a really huge problem. The manifold, I have just found out, will not fit in a RHD car! Am really bummed because i even asked if it would fit before ordering it...
hopefully they can help me out somehow The reason i ordered an expensive manifold was to avoid this!!

Last edited by 96fd3s; Jun 1, 2015 at 09:03 PM.
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Old Jun 1, 2015 | 09:35 PM
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I pull all the solenoids out and remove everything from the solenoid rack I don't need. Makes for a much cleaner setup.
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Old Jun 1, 2015 | 09:54 PM
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Originally Posted by IRPerformance
I pull all the solenoids out and remove everything from the solenoid rack I don't need. Makes for a much cleaner setup.
Yep all the solenoids are gone, or the "black box" in my case. Its just the massive mess of wires that's there. Will need to do something about that.

Whats the go with the return line and that thing on the entry to the primary rail?, you must know
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Old Jun 1, 2015 | 10:14 PM
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I usually run the fuel hoses right to the firewall.
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Old Jun 2, 2015 | 01:01 AM
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That's the FPD, you can delete it.
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Old Jun 2, 2015 | 04:41 PM
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ok cool, ill get rid of that.

Next question. Fuel pump rewire / relay. Iv got a walbro 400lph pump. How serious do I need to get with the wiring?

I was going to go with a 30a blade fuse holder, a 20a fuse, 25a wire (which is about 10g) and a 30a relay.

I dunno, that seems "sufficient". Would that be good, or should I go bigger?

What about the same wire/fuse holder but a bigger relay? would running a larger relay at lower capacity add reliability?

Last edited by 96fd3s; Jun 2, 2015 at 11:19 PM.
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Old Jun 8, 2015 | 11:15 PM
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Well iv got the fuel system mostly done now.

I got rid of the FPD, and tapped the primary rail for 1/4" BSPT. (bspt is common here, NPT is not).
I installed a 1/4" BSPT to 8mm (5/16) right angle hose barb so there is still room for the rear OMP vacuum line.

Iv finished up the plumbing in the engine bay and replaced all the fuel lines from the firewall forward.
Installing the AN compression adapter fitting on the stock hard line was a bit of a mission. And i accidently cut the top "bulge" off the feed line instead of the return. There's another bulge another inch or so down the hard line so I put the new hose right down over that and put two fuel lines clips on it. (one before & one after the bulge) Should be good.

I also installed the walbro 400lph fuel pump & relay etc. Was a nice change from tight engine bay work.

Here's the fuel pump installed. Its not really "drop in", but its pretty easy to install either way.
I cut the bottom metal bit in half, that supports the fuel pump at the bottom and bent it upwards so I could use the filter off the walbro 400. (As others have said the 400 filter will not fit unless you modify something).
There is not really any need to bend it upwards, I only did that because I was orginaly trying to hook the fuel pump up to the the stock "bulb" on the end of the hardline. But I decided that was a crap way to do it, so took it apart again, cut the bulb off and attached pump to hard line with hose & fuel line clips. (the hose is slid really far over the hardline, I only cut the very bottom of the "bulb" off)



I used a 60a relay. I figured it was better to run a bigger relay at half its capacity for reliability reasons. How correct that is I dunno? makes sense to me though.
I wired it in after the clip in the back of the car so It can be unclipped if needed.





I installed the relay inside the rear left hand side compartment, where the useless tool kit used to be.

I ran the fuel pump ground up here;


And here it is pretty much finished. Iv just got a long wire from the positive on the battery to the relay at the moment because im not sure where my battery is going to end up being located..


Last edited by 96fd3s; Jun 8, 2015 at 11:23 PM.
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Old Jun 9, 2015 | 03:40 PM
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You want to run the correct size breaker/relay for the wire you're using. The breaker is there to protect the wire from overheating. If the breaker has too large an amp rating it won't trip, possibly resulting in a fire.
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Old Jun 9, 2015 | 06:14 PM
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Originally Posted by silverTRD
You want to run the correct size breaker/relay for the wire you're using. The breaker is there to protect the wire from overheating. If the breaker has too large an amp rating it won't trip, possibly resulting in a fire.
Sweet, I got a 30a automotive blade fuse holder, and a couple of 25a fuses to go in it.
I think ill run a 20a fuse though just for added wiring safety
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Old Sep 7, 2015 | 07:36 PM
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So its been about 3 months since I started my conversion..Its taken much longer than id hoped but im almost there!
I dont have a build thread so thought id post a few pics here of whats been happening and how things are looking..
manifold & downpipe




intercooler piping & -AN oil return tube


ended up with, IMO, a really sweet battery box/holder/whatever..connectors to existing threaded holes in the boot



and here how she was looking last night..



The plate is aluminium, its just still got the protective backing on it..will remove when done


I hope to test start it tonight
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Old Sep 11, 2015 | 05:52 PM
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what manifold is that and what turbo you go with?
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Old Sep 12, 2015 | 12:58 AM
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manifold is custom, turbo is borg warner s360.
started it up for the first time since i started the conversion a couple of days ago..started first try no problem.
now i just need to fix up a couple things and its off to be tuned
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Old Sep 12, 2015 | 08:14 AM
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Good job man, welcome to the singles club.
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Old Sep 13, 2015 | 06:45 PM
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^thanks Pal.

Wohoo, car is booked in for the dyno/tune on the 1st october which was the soonest date available.
Car starts easily, dosent smoke, and as far as I can tell is now not leaking anything (had a couple of coolant leaks)

Now all I need to do is pretty up a couple of things, up and give her a good clean.
Ill get some fresh pictures. And will be sure to update with how I get on at the dyno.

cheers to rx7club for all your help
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Old Mar 25, 2016 | 12:29 PM
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Any Updates??
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Old Mar 29, 2016 | 02:34 PM
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Originally Posted by FD7KiD
Any Updates??
sure, i made a build thread. Not the most exciting thing in the world but here it is

https://www.rx7club.com/build-thread...6fd3s-1089876/

Cars still going strong 4 months and a few thousand km's after finishing up..had a few problems since then though (blown front main oil seal, heater core exploded while driving, and my alternator died the other day)
Other than those minor setbacks, things are still going well
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