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Stock R33 Turbo Vs Gcg R33 High Flow

manuel

By manuel,
in Engines & Forced Induction

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manuel Community Regular

manuel

Posted
Posted

Took some photos of the turbos while they were both out of the car

The GCG internalls are much bigger than stock

Bigger front and rear wheels

Also noticed a stamp on rear housing of gcg which says 7. The stock 33 rear housing has a 2 stamped on it.

Gettin it tuned soon, chasing 250kw with good response.

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manuel Community Regular

manuel

Posted
  • Author
Posted

i need to get the turbo tuned to the power fc.

My power fc is tuned to stock r33 turbo so im only running the gcg on 7psi untill it gets tuned.

i have noticed that the turbo comes on later than stock but pulls harder to 7000rpm and more. It feels alot quicker than the stock r33 turbo on 7psi and its not even tuned to suit

im hoping that with a good pfc tune and greedy boost controler we can get it to boost quicker and pull hard to red line.

paulr33 Grand Master

paulr33

Posted
Posted

yeah an interesting point that

i wonder if

a) its the a/r housing size that makes it feel sluggish near 6krpm (stock GTST turbo)

or

b) if its the snout size / exhaust wheel that does that

skyguy61 Collaborator

skyguy61

Posted
Posted

I'm sure its a bit of both Paul lets face it the standard turbo is tiny, you can flare out the exhaust housing behind where the turbine sits as mine has been done, as long as you can take off the exhaust housing without damaging the ceramic turbine.

Pal Veteran

Pal

Posted
Posted

looks very similar to mine, gets on boost by 3500 and pulls hard to redline, a bit laggy at the bottom but not to bad. best i got out of it was 350rwhp @ 15psi. i opened out the wastegate hole till there was about 2mm seat on the flap just to make sure i got the best flow

KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted
i note the exhaust wheel and snout is heaps bigger but essentially the same A/R housing is retained - is it not ?

how does this perform around 6000/7000 rpm?

Here's my Stagea with a Nismo SMIC. Later made 245AWKW with a fmic and new tune. Bit more left - GCG claimed 450hp: (see post #558):

http://www.skylinesaustralia.com/forums/Rb...html&st=540

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