JunpoweR

iTrader: (1)

OK i am about to swap a fd with the stock rz twin turbos into a fc..
Just wondering if anybody has swapped a FD with stock twins into a fc and to show me some pictures of their mods..

Thanks
Peter

adrock3217

Well for one, the stock turbo's on the FD are horrible technology by design. They tend to die extremely early.

But uh...apparently it's very very hard to mount an FD motor, as the mounts are totally off or something? The 13b-RE tends to be a much easier swap.

Anywho..I'll try a search for you, but you might want to do it also. It's been discussed a lot..and I remember it being really hard.

liv

not worth the money

and like adrock said search its been covered a billion times

CyborgRyu

iTrader: (8)

can't run them unless they are in non-seq setup. Spool time is slow as well.

fstrnyou

a friend has a 13b-rew in his FC with the stock twins and FD downpipe. had to make custom motor mount though. very nice fitment

Jager

iTrader: (10)

http://fc3spro.com/TECH/SWAP/FD3S/rew.html

PM Mazdaspeed7 for motor mounts FYI. Otherwise it's pretty simple.

JunpoweR

iTrader: (1)

I am gonna do the electrical work and use a brand new fd harness and a power FC with commander to run it sequential.

As for the motor mounts I am getting aluminum front-middle-rear side housings for weight savings which will be tapped for FC engine mounts.Im sure that will work .I have seen fc's with fd motors stock with the center housing tapped for fc mounts.

I plan on running a dry sump racing oiling system so the oil pan will be removed.
Custom V mount intercooler and radiator will be fabricated so I guess i'm in the clear Just wanted some feedback from people who have seen/done this swap..

robtechfabrications

if you're going through all that trouble with the wiring and dry sump etc...y not swap out the weak stock twins for a nice single turbo setup?

Wankel7

Dry sump? Wow, that is some pricey stuff...you best keep us updated

James

outland_drifter

Dude cuz sometimes its better to have a twin turbo setup. it all depends on application. id much rather have a twin if im gonna be racing in the mountains. cuz of spool time. and trust me on this i use to have a subaru with twins and i definately beat the **** outta most of the stuff i came across.

classicauto

iTrader: (3)

A modern turbo with a BB center, a properly sized exhaust housing for motor/porting (or lack of) that is properly tuned should have NO trouble spooling right up in the low RPM ranges. Granted the stock twins do spool well, you can't try to tell me that a properly setup BB single would be that much slower that its worth keeping the poorly designed and known-to-fail twins in there.

My5ABaby

iTrader: (7)

Nope. In the 10+ years the FD has been out, it's NEVER been done.

RETed

-Ted

JunpoweR

iTrader: (1)

Is this sh*t True??

Seems Like I won't have a problem and Someone show me some pictures of this swap if it's been done?!

I guess I'ma have to hunt paul down.

Thanks

TitaniumTT

I so love to read people who own F/C's probably NA at that talk about the twins and how unreliable they are whn they have never even seen a set let alone held them disassembled in their very own hands. People really need to STFU when it comes to regurgitating info that they have no experience with. The twins are mildly unreliable, but it's not the turbo's themselves

As for a BB setup the twins make almost full boost @ ~2500 RPMS and holds that boost & torgue to near redline. Show me ONE BB that does it... & please don't say GT 35R with @ .86 hotside. That will spool to boost mid 3's and start to become a restirction ~mid 6's. Twins don't. Most people don't have the patience or the intimate knowledge of the workings of the sequentials to properly toubleshoot. Not to mention that most of the troubleshooting on the stock REW needs to be done with the mani's dissasembled. That doesn't make for reliable trouble shooting.

As for them only being able to be swapped in non-sequential form.... see my first comment.

I highly doubt you'll be able to use the AL "irons" and have an REW mani bolt up.... infact I'm almost sure it won't. You're looking at alot of useless porting and machining.

Once again I say - swaps = fabrication. Can you fab?? Got TIG??

antnicuk

no point, just use a TII lump...... i do and the car is quicker than most of the fd's in england round a track or up the 1/4 and i pay $300 for a complete engine. GT35/40 with very little lag

TitaniumTT

If you're going single exactely.,... what's the fn point?

j9fd3s

iTrader: (3)

yeah sequential twins in the mountains are a different animal....

j9fd3s

iTrader: (3)

they do when you open the throttle 100% and dont move your foot. the do NOT when you move your foot around.

thats why people like jim labreck and trev dagley went non sequential in the first place, you get an instant 50hp, and 2 one thousands later you get another 100, weather you wanted it or not. and then of course sometimes you get nothing.

plus its tight, HOT, complex. it all bolts in except you need a custom DP

TitaniumTT

ummmmmm.... NO ask people who went single. They LOOSE response, not gain it. They may gain a few HP up top but loose WAY more than they gain bel0w ~4,000 rpm

I don't know what you're attempting to say there? Hot??? who are you? It doesn't all just bolt in... gimme a break

antnicuk

twins are great and work well in stock form. My Cousin has a complete REW with an apexi in his FC TII running sequentially, it was **** loads of work and does drive nice but mine is so much quicker every where in the rpm range.

If you look at Twins range on a dyno graph they seem very peaky, they dont flow power all the way to 8k. they start dying off before 7 from what i have seen.

If i had an FD i wouldnt change the twins but if i had an FC i wouldnt go to all the bother of fitting an REW in it. S5 engines make just as good power with the right porting, but at a lot less money, with the extra cash you could buy the right size turbo and i'm sure you would be happy.....

Just my opinion from experience having owned and driven all the examples discussed above