rx7idgit

Just wondering if it is possible, and if so how difficult it is, some guy on here is selling the turbos off his FD pretty cheap cause he just went BIG single turbo.

Liquid Anarchy

iTrader: (2)

I don't believe you can use the stock FD Manifold. It'll contact the LIM of the FC. I'm sure everyone will say spend your money to turn your FC Turbo into a Hybrid, or just get another turbo; instead of wasting your money on the FD TT's.... remember, he's taking them off for a reason

Aaron Cake

iTrader: (1)

It can be done by adding a spacer but then of course you need to fabricate everything else.

This includes the intake pipes, intercooler piping, downpipe (major pain due to lack of clearance), oil and water lines, etc.

Overall it's not worth it since the FD turbos are junk anyway (just do a little reading in the FD forum if you doubt this...average turbo life is under 50K).

GoodfellaFD3S

iTrader: (213)

Actually, my stock twins lasted over 90,000 miles, with about 30,000 of that at 15 psi.

having said that, the sequential system is way to complex to adapt it to the fc in my opinion. best bet is to look into a BNR hybrid turbo or some other aftermarket turbo.

Aaron Cake

iTrader: (1)

I said average.

Meaning that some may have lasted longer, some may have immediately failed, and many failed around 50K.

aver·age·ly adv.
aver·age·ness n.
Synonyms: average, medium, mediocre, fair, 1middling, indifferent, tolerable
These adjectives indicate a middle position on a scale of evaluation. Average and medium apply to what is midway between extremes and imply both sufficiency and lack of distinction: a novel of average merit; an orange of medium size. Mediocre stresses the undistinguished aspect of what is average: “The caliber of the students... has gone from mediocre to above average” (Judy Pasternak). What is fair is passable but substantially below excellent: in fair health. Middling refers to a ranking between average and mediocre: gave a middling performance. Indifferent suggests neutrality: “His home, alas, was but an indifferent attic” (Edward Everett Hale). Something tolerable is merely acceptable: prepared a tolerable meal.

rotary downshift

lol .. well IMO from what ive heard there seems to be way to much problum with the selanoids and vacume lines isnt there like 15 or somthing?.lol .. but yeah even when a turbo is in working order u still have to worie about everything else .. and its not worth the hassle ... hence y he is converting to a single ...

GoodfellaFD3S

iTrader: (213)

Did you take a survey? I've been around FDs a long time, and have spoken to and learned from some of the best, from chris and ari over at www.rx7.com to dave at kdrotary to my business partner steve k over at gotham racing. FD motors may last an average of 50k, but the turbos tend to make it towards 100k, turbine damage from apex seals notwithstanding. This is esp true if the boost is kept at stock levels. If stock twins are failing at 50k miles, it is because of being boosted to 17+ psi or being starved of oil.

Aaron Cake

iTrader: (1)

Based on the experiences of local FD owners.

RETed

8<

8<

Oh please...

You really want to do this in the FC section?

The stock FD twins are CRAP.
The power delivery from the twins are CRAP.
Why do so many FD owners go single?
Cause the stock twins are CRAP.

As for KDR, they are a bunch of morons with their Anti-Detonation Device" that they charged HUNDREDS for to band-aid poor tuning.


-Ted

GoodfellaFD3S

iTrader: (213)

Hi Ted,

aren't you just a pleasant guy .

i am not advocating using the twins on an FC, simply stating they last more than 50k miles.

on an FD they arent a bad setup (when working properly, there's the catch). I never had seq problems on my car after doing the silicone vac hose/zip tie job. they offer great spool and a very streetable powerband starting at 3000 rpm, while limited to 300 rwhp reliably and 350 rwhp when pushed, with all the supporting mods of course.

Having said that, I now have an upgraded non-seq setup, and many go to a single setup when their stockers die. Go into the FD section and tell people the stock twins are CRAP, as you so eloquently put it. I am sure many will beg to differ. Have a nice day .

Rich

adrock3217

From what I've heard, theres 20+...(23?)

Carzy Driver

It would be interesting to see after all the fab is done, but I wouldn't waste my time. not to knock on FD guys, but you could buy a cheap ebay turbo and have it last the same or longer /jk

arghx

iTrader: (3)

IaMtHeRuThLeSs1

15 vac lines?...bahahhahahahah the FD guys wish!

Bryan@BNR

iTrader: (1)

FD twins on an FC. I tried fitting them on my T2 years and years ago. The twins on the FC engine needs mucho fabrication to work. The twins were designed around the FD engine which has the lower intake manifold that is closer to the block. The T2 lower comes out more toward the turbo which would cause the turbos to hit the lower, so you need spacers between the exhaust manifold and the turbos to get them away from the manifold. Also the rear turbo would need a drain port which would be easy to do if the engine was taken apart, just would be a bunch of mocking up and a bit of fabrication. It can be done, but I don't think it is worth your time unless that is all you have. If time is all you have and you have a set of twins, try it.

Bryan@BNR

jerd_hambone

if it were actually done.. what kind of power would be made?

SonicRaT

iTrader: (6)

A whole lot less than if you spent the money putting a larger single on.

(I really don't see the point though, unless you transplant the TT ecu and wiring, the thing's going to be no better than the stock turbo for spool)

jerd_hambone

hahaha yeah

t-von

iTrader: (8)

And why is this may I ask? My original engine has over 100k and still pulls hard as hell. Is my engine a freak of nature? Nope I just truely understand what it takes to make them last. At 50k, the internal parts are know were near out of spec. If they are only lasting that long, it's because people are driving around with improperly tuned/modified/carbon infested engines period point blank end of story.

t-von

iTrader: (8)

Not really. The guy asked about buying a used set of twins. Twins will out perform the stock FC turbo's. This makes the twins a cheaper alternative to going single and spending more money. In non-seq mode they are good for close to 400rwhp however, they won't last long at that level.

SonicRaT

iTrader: (6)

You're missing the fact that people ignore general maintenance and ignore that by that time all of the vacuum lines are cracking, solid as a rock/etc, which results in the twins not operating correctly, and sooner or later an overboost which kills the poor thing.

t-von

iTrader: (8)

Now now Ted! When was the last time you drove and Fd with properly funcional twin turbos? I would let you drive mine if you were closer. They are the ****.

t-von

iTrader: (8)

Missing what fact? I got 103k on original engine, original vacuum lines, and original turbos that don't even leak oil. The main difference is my car is still stock and is well maintained. I do have a down pipe and modified stock air box, but I'm also smart enough to install a boost controller to keep things at stock boost levels. You also be surprised how much better things will hold up under the hood with a proper cool down of the engine before shut down. And no I'm not talking about a BS turbo timer either.

SonicRaT

iTrader: (6)

You asked why FD engines die an average at 50k miles, that's why (you also included reasons as to what not to do to avoid that in your posting). As he said, 'average', which includes idiots who don't do everything that you do. Anyway, what do you guesstimate the cost of just fitting the FD turbos (and fabricating spacers/manifolds/DP/intercooler piping/oi lines/etc) would run? I'm sure it'd probably be more than the cost of a simple hybrid that would fit in the stock location, thus my point made previously.

arghx

iTrader: (3)

AHEM