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32 Gtr Factory Turbos

DAS KAMU

By DAS KAMU,
in Engines & Forced Induction

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Antimatter Experienced

Antimatter

Posted
Posted (edited)

I have had some really good result with steel wheeled stockers....

-7's seem to be the turbos of choice here though.

Here is my 2c (I'm not a mechanic or a tuner - so.... its free...)

- combined with some good tuning and cam gears 300kw is not out of the question with steel wheeled stockers

- ball bearing turbos are overated

- the .48 Exhaust housings on the stock turbos make for brilliant response

- on a stock engine (particularly one of unknown history) - steel wheel stockers are capable of bringing it to its limit of reliability / power without sacrificing response.

- to my understanding - when it comes to servicing - rebuilding stock turbos is much cheaper / more cost effective than overhauling Ball baring varients (such as -7's)

I have even seen some GTR's running -7's with a 0.48 rear housing (they usually come with a .64) in order to make them into a nicer - more responsive turbo - have seen a safe 300kw on this arrangement too.... Stock turbos allready have this housing.

I have also heard (and believe only half the things you hear...) of a reputable melbourne workshop making 360kw using the comp side of the factory turbos (with an "undisclosed" exhaust turbine configuration).

Anyway - just some opinions / "insight" to throw into the mix.

Have Fun!

thats a good start

cheers

Edited by Antimatter
bnr#@ Mentor

bnr#@

Posted
Posted

I have stockies with steel wheels, done by slide of these forums. Response is very nice not sure about power yet as haven't upped the boost yet. If going this way though I would suggest changing the actuators to something new as they are old now and now I have problems with them....

The best response we saw on the dyno so far was with the actuators unplugged we saw 13psi by 2.5k but had to back off so to not overboost them (troubleshooting slow boost build issue)

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