going t4... need input on proper combination

[Mark S.]

I just got a new t4 manifold and am planning on going t4 with my setup. I've been looking at t4 60-1 setups (mostly turbonetics setups from agp). I have all the proper supporting mods (I went 12.000 at 115 on my 16g). Fully built engine, small bit of head work, mild cams, 780cc pte injectors, dsmlink, maft...etc etc. I want a turbo that is going to be able to put down 400+ hp on pump gas and just be ridiculous on race gas. I know the 60-1 is a fantastic high boost racegas turbo... my buddy put down 495 hp on a basically stock engine with one. I was looking at agp's website and under the to4e turbo section theres a whole different variety of compressor wheels to choose from. I was intrigued by the the super 57 trim(basically a normal 57 trim comp wheel with a .2 inch larger exducer) I was wondering if anybody has had any experiance or input on any of these "super" turbonetics wheels. Also being t4, my turbine housing a/r selection is almost unlimited. I would probably go with the .68 a/r but if someone has a magical combo of a/r and compressor wheel let me know.

 

[CanadianTalon]

I'd run a PT61 (56-trim GT40 wheel with a p-trim turbine in a T4 footprint) with a .68 A/R tang housing.

 

[Mark S.]

Are there any specific reasons for this? Do you have experiance with this combo? How does it fare on pump gas and on race gas? Spool times?

 

[jo1]

i converted my scm-61 to a T4 setup using an AR .70 TH with a P trim.... this turbo get a full boost around +-5300rpm at 25psi. I love this turbo and it give me more control on the launching since my car is FWD... i'm running with pump gas and never try it on racing fuel yet.

 

[Mark S.]

I'm looking for something moe in the 60-1 range spool wise. 4k-4.5k ish...

 

[jo1]

what wheel you intend to use with the AR .68 TH..... for stage V maybe it around 4-4.5k but if you use P trim it maybe later around 500rpm with the extra power on top....

 

[nanokpsi]

I'm looking for something moe in the 60-1 range spool wise. 4k-4.5k ish...

You'll need to stay with the t350 to keep spool where you want it. Either the 60-1 or the 56 trim 61 will do fine. I would opt for the 61 if I were you though, but it may fall out of your spool requests. ####, just throw on a 67