R32 Turbo On R33

[666r32]

Hi All,

I'm just wondering what problems there may/would be installing an R32 turbo on an R33. I know lots of people put R33 turbo's on R32's and have read something about a restrictor in the oil feed line of R32's so that there is a different oil pressure due to different bearings being used between the turbo's. Can anyone confirm this? Just wondering if anything special needs to be done swapping them the other way around.

Ur prob thinking why would I wanna put an R32 turbo on an R33? Well the turbo on my R33 blew and the only 2nd hand turbo I can find for it is expensive, so for that price I would rather just buy an aftermarket one. Only problem is the person that looked at my car also believes that the engine is damaged, so I don't want to buy an aftermarket one for which I will need to get car tuned on dyno if I'm not certain the engine is ok. But, I want to put a turbo back on the car to confirm whether or not there is a problem with the engine once the turbo issue is resolved.

So, I was thinking maybe an r32 turbo might be a cheap temporary option for me to check how the engine goes with the turbo issue resolved. From what I've read it seems an R32 and R33 turbo is a direct bolt-on swap, is this the case?

Cheers

[daisu]

R33 turbos aren't expensive, certainly not anywhere near the realm of an aftermarket turbo. And even after you find a problem (if there is one) with the engine, you are still going to have to remove the R32 turbo and replace it with something larger.

If anything, the R32 turbo could damage your engine as being undersized it will be running alot less efficiently which equals higher inlet temperatures. Also, since the turbo will be running higher speeds to keep up with the 25 you risk having the turbine on the RB20 turbo failing.

RB25 turbo with manifold, dump and lines went for $150 on SD.com forums today. Saw one going on this forum last week for $200. Found one (again this forum) rebuilt for $500.

If you are getting aftermarket turbos for this price then they must be cheap copies

Edited August 14, 2008 by daisu

[R31Nismoid]

Rb25 turbos come up for sale almost weekly - and priced @ $400

Not expensive at all when aftermarkets are $1700+

not sure what price you'v been given for an RB25 turbo, but $400 is the limit.

The RB20 turbo is too small, and could cause issues with the tune/ECU and so on being it'll be on boost earlier than normal

[666r32]

I actually live in NZ. The only R33 turbo I've been able to find so far is $700 from a 2nd hand parts place which is ridiculous, but there's lots of R32 ones around.

Guess I will just leave it until I can find a cheaper one since I still have my R32 to drive around in. Hopefully I can find one soon.

Cheers for comments

[NWR31]

sorta on topic but does anyone know if rb20/25 exh manifolds are different at all?

reason i ask is the to4e turbo i have is supposed to bolt up to my stock mani & if the rb25 is different in any way it might be good to know.

thanks

[daisu]

Rb20 and RB25 exhaust manifolds are the same

[NWR31]

^thanks, thats what i wanted to hear!

[R31Nismoid]

I actually live in NZ. The only R33 turbo I've been able to find so far is $700 from a 2nd hand parts place which is ridiculous, but there's lots of R32 ones around.

Guess I will just leave it until I can find a cheaper one since I still have my R32 to drive around in. Hopefully I can find one soon.

Cheers for comments

So just purchase one off the forums here? Living in NZ shouldnt pose one problem.

Have the seller ship it over.

Wouldnt be more than $50 postage at the worst.

Thats what, $250 cheaper to begin with.

[daisu]

Have you thought about VG30 turbo? (from the single turbo model obviously). This is a common upgrade for RB20's, would be suitable for RB25 I would think.

Failing that, have you thought about purchasing turbo's from Australia?

[SKiT_R31]

Answering the question, yes you can and yes it will work, it will spool early and run out of puff quickly. If you put the stock r33 actuator on it (so its only running 5-7psi) it should cope ok, They don't like pushing more than ~ 150rwkw worth of air, so run the lowest boost you can, and it will get you by (i wouldn't go bouncing off the limiter though)

That said, your better option would be to get another rb25 turbo, a vg30 turbo or similar T3 (an old vl turbo even), you can get them in aus for around $300

[daisu]

I see VG30 turbos going a fair bit on trademe and other nz based sites (skylinesdownunder, d1nz etc)

[R31Nismoid]

Not here they dont, again, post it over and save yourself money.

[1SLP80]

Rather than start a new thread................ might as well hijack

Just wondering if the r33s1 and the r34gt dump pipes are the same??

I know that the r33s1 and r33s2 turbo's have slight differences but that has nothing to do with the dump.

Hopeing 34's will be the same????

[R31Nismoid]

R34 has a lslightly larger rear housing, id imagine it could well be different based on that

[1SLP80]

OH DAMMIT!

not that i dont believe you....... can anybody unfortunately confirm

[paulr33]

R34 has a lslightly larger rear housing, id imagine it could well be different based on that