yup i saw that, thanks

That EJ25 setup is very inefficient though, they aren't getting anywhere the numbers like we are with the GT3076 turbo.

Cheers, Mike

 

i think compression helps a lot on them though. my built 07 sti was 9.5:1 and made 540whp (dj corrected) on a 35r at 28 psi with stock heads and cams. most guys with the same setup with lower compression took 30 psi to get even close to that.

 

A buddy of mine has a fully built 2.2 sr20 from mazworks and he sent his gt3582 to fp and had them make it into a gt3586 and his car spooled 600 rpm sooner and made the same power on pump gas compared to his last race gas map at the same boost. It was a huge surprise.

 

Apparently, there was a huge problem somewhere in the mix, because that is atypical by a longshot.

 

i really dont think it's compression on these setups.
It's just the package as a whole.
He's making 520whp on the 3037 (with SR22) at only 21psi boost. If he increases the boost, all he gains is peak torque, not peak horsepower.

Small things like a larger diameter pipe exhaust manifold. It lost 200rpm in boost threshold, but made the same power with 2psi less boost. Fun!

 

I agree Ted all we did was replace the turbo and put it on the dyno. We don't know why it picked that up but maybe the old turbo was a little worn out

 

I have a silly question, can a regular 35r be upgraded to a GTX? is so about how much I am looking at.

Thanks

 

It should be so long as the shaft diameter is the same (don't see why it wouldn't be). You'd need a compressor, compressor cover, and rebalance - just as FP does the HTA variants.

 

You can send it to Garrett under their CHRA exchange program and get a GTX series returned for a slightly higher cost.

Might be more cost effective to simply sell it though and buy a new CHRA. Worth looking into though.

 

Does anyone know who can do it? and how much it will be to swap to a GTX?

I call blouch turbo and they said they cannot do it since garrett does sell the wheel, I also email ATP but they haven't replied to me.

 

They (the dealer) wouldn't be putting on a wheel or rebuilding anything.

On the Garrett BB stuff, you send your CHRA to Garrett through their distributors and they send you a new CHRA back. This is instead of rebuilding yours and sending it back to you. It is like a core exchange program.

Instead of sending you back a normal GT CHRA, for an added price beyond the GT CHRA Exchange price, you can update to the GTX wheel and compressor cover on this exchange program. Any authorized Garrett distributor should be able to get this done for you.

The price was high enough though that I would bet it you would be better off selling the turbo and buying a new GTX. Unless you have a damaged GT turbo, then it might make financial sense for the core exchange.

 

no you can't - reason being you send the CHRA to a performance distributor - who would need to have the CHRA's in stock. Garrett is not shipping GTX CHRA's, just turbo minus turbine housing

 

Does anyone have the inducer / exducer specs for the HTA3582R ans the HTA3586R?

 

Pretty sure 60-82, and 62-86 respectively.

 

HTA 3582
Ind - 59.2mm
Exd - 82mm
Trim - 52

HTA 3586
Ind - 62.0mm
Exd - 86mm
Trim - 52