What Turbo Upgrade Gt35r Vs Gt37r Vs Gt42r

[MJTru]

I just sold my gt35r. It had an GT turbine housing t3 in and vband out. It was sitting on a 6boost 44mm external gate exhaust manifold.

OK theres the thing. I have a brand new gt42r All vband out with stainless steel housing from TEAL. I also have a 6boost manifold brand new with a 60mm external gate.

Now the Motor is fully built. was Ruining 35psi. I was running a power fc, but I'm planing on selling it for a heltec ps2000 for rb25det.

My question is Whats my best upgrade in the opinion of asu. should i get a gt37r or go back with a gt35r. Can some one give me some specs or set up that would be kick ass. I want about 800-900 hp at the end of the day at about 9000 RMP's. I will do my best to list all mods

1. Fmic

2. turbo you opinion.?

3. hks twin power

4. custom intake 100mm throttle body

5. Sard fuel rail and 800cc injectors

6. Eagle rods and pistons Stock crank redalanced and knife edged.

7. Greedy oil pump and Tomi race main and rod bearings.

8. Built head the works. to much to list

9.6boost t3 44mm eternal gate or 6boost vband 60mm external gate manifold for gt42r.?

10. splitfire coils and hks plugs.

11. All small stuff like External fuel pump upgrade. All lines regulators, boost controller,

I have don my best to give a picture of my car I think i have everything in this motor to take the stock crank to its limits.

I would like to see what the RB25DET can do.

ANY HELP COULD BE THANKFUL THANKS MATES.

Edited August 29, 2009 by MJTru

[axe s]

Well the GT35 won't make that power and i haven't seen the specs on the GT37 yet... but i assume it wouldn't aswell...

also for that power u'll need new injectors.. they'll be maxed out about 800Hp...

Also it would be easier running water meth injection so you can bring the octane up and keep it cool..

[MJTru]

thanks mate. how about the haltec ps2000 ecu. for $2300aud can i get something better.?

I was looking at the AMS GT950R

T3 so i can keep the manifold i have. the turbo is a direct replacement for the gt35r. and i can get it with the same GT T3 vband hot housing, on the cold side i would get the wheel billet so i can get a little more air from it, When you think about it thats about the same as a gt42r i just spools faster much faster. The GT950R is good for 950hp and claims max spool at 4500 rpms. depend on set up.

and the smaller brother the GT850R spools even sooner. check this link for charts on turbo http://forums.evolutionm.net/evo-dyno-tuni...wer-inside.html

Any of you guy's herd of these turbo, has anyone tested them. ?

keep this thread alive mates

[Lithium]

A mate of mine is putting a Precision 6765 (AMS obviously trying to lay some claim on it by calling it an AMS GT950R, cute...) on his built RB25 which previously ran mid tens full street trim on a .82a/r GT3582R... I'd imagine it should be running some time in the next month or so. I believe the plan is to get at least 500rwkw out of it, and any more would be a bonus. I can see if I can post results on how it behaves when its done, I wouldn't be surprised if its a little laggier than full spool at 4500rpm but they don't appear to be bad for the power they can make and very very impressive for a T3 foot print turbo.

I am still waiting for more results from them, AWDMotorsport got >800whp out of theirs on E85 and clearly had a broad enough power delivery with it to run an 8 in "street trim" but they were running damn near 50psi.... doubt you're going to be going there. I will try and hunt this thread down if my mates car ends up running any time soon!

There is no other T3 flanged turbo I am aware of which would allow you to make that kind of power, I would be inclined to lean towards a GT4294R with a twin scroll manifold or something along those lines if I were after the power you are talking about personally.

Edited August 30, 2009 by Lithium