The sweed

I have a garret GT35r that was bottoming out at 30psi last time my b series setup hit the dyno. I am changing cams from CTR to pro1:s, E85 and alot of other stuff and need a retune so I was looking at what can be done to the turbo without buying a new one. Purpose is mostly circit racing or on the streets having fun.. No city driving.. A few dragrace weekends a year.

I have seen a few options out there. Fitting a GTX compresor wheel with no need for machining the compressor cover:
MIC Turbo and Injection, INC.

A GTX wheel that I guess you can use but I would think that some machining has to be done to the compressor cover or a new cover. Last time I checked MIC turbo took $375 for this upgrade.
MIC Turbo and Injection, INC.

Forced performance has a upgrade too but it is $700

The best for me I is to buy parts in US and have a lokal shop here in Sweden balance and assemble it.

I fear that the GTX wheels available are not garret ones and that its made of cheap material and that I face a risk of expensive failures. Thats why I am looking for input.

And then there is alot of stuff all over ebay also.

GTX titanium wheel
Snailturbo GTX3582R Ceramic Dual Ball Bearing Chra w Titanium Billet Comp Wheel | eBay
2nd edit. I just checked and titanium has a higher density then aluminium so with a good aluminium alloy Ti is not needed.

GTX wheel and cover kit:
GTX3582R Compressor Housing and Wheel | eBay

I meen snail turbo.. WTF is that.. Intresting with a titanium wheel though
Snail Turbo GTX3582R Titanium Alloy Ultimate Billet Wheel 62 5 82 5mm | eBay

Mamba JDS and snail keeps comeing back when serching the www.


Edit: found this 64mm wheel too..
http://www.ebay.com/itm/11-Blade-64-...ZWccj6&vxp=mtr

And a 66/84mm http://www.ebay.co.uk/itm/Billet-Tur...YAAOSwYHxWPqsV

Compressor maps would be nice though..

Dark_Teg

The GTX upgrade is totally worth it on a circuit car. Faster spool and more stable at the compressor wheel speeds you are seeing @30psi.

The sweed

I emaild Mac at STC.. (The Shodan) and this is the solution:

Interceptor GT3584R Ball Bearing Super Core

He can turn a used gt35r to the interceptor. it has a 7+7 compressor wheel compared to the GTX 11 blade. The 7+7 blade usualy means better respons.

LightningTeg

This is my Interceptor on 15lbs, 84x89 LSVTEC, CTR Cams, E85 (Blue)

The sweed

LighteningTeg:

How do you like the respons of it? Between shifts etc.. Beautiful graf, tourqe is pretty nice and flat and spool is fast. Did you stop there at 15psi? I would have loved a 30+ psi graf.

Whats your speces on the exhaust side? I would have expted a little higher power at 15psi on a 62mm turbo in general I guess.. What cams?

LightningTeg

For a turbo that can do 700whp, its very impressive how well it drives and how easy it is to modulate power with throttle input. I haven't had a ton of seat time or a chance to race it on a road course (ultimately the purpose of the car) yet though.

My fuel pump dyed on the dyno right when I started to turn up the boost. I replaced the pump but never ended up going back to the dyno and just street tuned it to 30lbs. I will tell you definitely over 600whp based on acceleration logs and the injector duty cycle.

Compressor:
T04S Compressor Cover .70A/R
Inducer: 60.82mm
Exducer: 89mm (Extended tip)

Turbine:
T3 T31 2.5" 4 bolt design .63A/R Volute.
Inducer (Wheel Diameter): 71.66mm
Exducer: 61.8mm

ITR Cams