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Exhausting My 33

R33S2

By R33S2,
in Queensland

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R33S2 Grand Master

R33S2

Posted
Posted

post-17300-1156935427.jpg

I recently upgraded the lot from a bitza set up that started with a split dump on the standard turbo, then a front pipe added on later, it was good for 212kw but limited due to the 2 1/2" dump and the turbo at it's limit, mind you after 18 mths @ 16 psi it was still good, then at some stage I noticed it wouldnt boost above 15psi, Dan (3lit3 32) reckoned it was the studs snapped on the manifold, he was right but not quite as I had cracked the manifold as well. So I got a turbo with dump and a second manifold and installed the lot myself, and after a delay due to dyno comps, I had noticed that the cat was only 2 1/2" and with the bigger dump, the exhaust note quite louder as well, Right Price installed a 3" cat and resonator for 400 and I was off for a retune last night, it made 312rwhp/232kw @ 14psi easily, the turbo is a bit laggier but seems to be more gruntier down low, if that makes sense, the exhaust note is alot gruntier as well but the resonator took the harsh bark out of it. my next step will be the injectors, 500cc should do me.

post-17300-1156938062.jpg

A few more pics of the whole works are HERE

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Col-GTSX Grand Master

Col-GTSX

Posted
Posted

Nice Terry...

I cannot wait to put my new hair dryer to the test...

In the mean time welcome to the 240rwkw club (well close enough).

Its at this stage you will find out how good your clutch really is and its easy to tell how good tyres really are...

Bunta Grand Master

Bunta

Posted
Posted

I reckon the louder exhaust note comes from the larger turbo....as it has a larger discharge area?? Cause I changed nothing in the way of exhaust parts when I did my turbo and it came back heaps louder! Anyway that is neither here nor there! Good work Terry looks like it would be a fun drive now! I always love reading other peoples modification stories!

I should really write up my story some day! However I think there is a bit more necessary and unexpeceted work to be done before my story is over :O lol

And I hear you on the tyres point Col! All of a sudden I found out my old tyres werent that good! :/

Revhead Grand Master

Revhead

Posted
Posted

Looking (and no doubt going) really good Terry! 240rwkW should make a nice, quick daily driver, any more and it gets impossible to put power down. I hear you guys on the tyres, after the last bout of mods I did on my old 33, the tyres I thought weren't too bad suddenly couldn't cope.

Nice curve on the graph too, it stays above 280rwhp for a fair chunk of the range :rofl: A set of cams might keep the power climbing for even longer too :)

R334door Experienced

R334door

Posted
Posted
With this wet weather lately I am finding the grip a bit loose with that extra power, the tyres were OK before, but now, a tap of the pedal gets me spinning too easily :blink:.

what turbo are you running now? they are decent numbers you are getting,very good. :)

Bunta Grand Master

Bunta

Posted
Posted
With this wet weather lately I am finding the grip a bit loose with that extra power, the tyres were OK before, but now, a tap of the pedal gets me spinning too easily :/.

The day I got mine back half throttle in 3rd would have me looking out the side windows instead of the windscreen lol...it is fun for a while :(

R33S2 Grand Master

R33S2

Posted
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Nobody can identify the turbo, GoFastBits said it was probably a HKS prototype, it is a BB and has american threads in it, Dan reckoned it be equivalent to a high flow and Peter Woodward my tuner said it looked like one off a Rotar. Beats me, it goes good and the BB spool is goooood.

The Dan Grand Master

The Dan

Posted
Posted

Yeah it looks to be something equivalent to a GT2535 - SB8032.

These are rated at around 400hp. But the results would suggest a bigger turbo just from the boost you are running...You are probably right about the HKS Hybrid copy thing.

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