Time Attack Setup For A Gtr

[DCIEVE]

So when is the 'p' available to the public, I've been procrastinating over turbo choice for too long!

[Full-Race Geoff]

-- pump gas at 19psi

^^^E85 Tune@20 psi -- wayyy laggy + weird dip??

so we got that weird dip figured out tonite, and why it was so laggy -- there was a small tear in the wastegate diaphragm! this caused extra lag, and weird behavior when the wastegate was opening.

NOTE: LEARN FROM MY ERROR -- ALWAYS RUN THE WASTEGATES OFF COMPRESSOR HSG TO AVOID ANY VACUUM BEING SEEN BY THE WASTEGATE> IF YOU RUN WASTEGATE OFF OF INTAKE MANIFOLD USE A CHECK VALVE

Edited March 28, 2010 by Full-Race Geoff

[Full-Race Geoff]

So when is the 'p' available to the public, I've been procrastinating over turbo choice for too long!

after i test it, assuming we see favorable results they can be ordered with a 4 week leadtime. If it does not do what we expect, it will not be released.

I had a friend with a 100% stock R33 RB26 (Stock cams, stock everything) tune with a twinscroll 35R today for good reference. i will post that dyno up shortly, and then compare my new turbo dynosheet to it

[Full-Race Geoff]

R14 shakedowns at bondurant today 4/5/2010, low boost (13psi)

extremely happy with this new turbo

[Marlin]

Wow! That sounds extremely responsive! Niiiiice!

[NZM.031]

fark me... its got more response then of them fancy nitro RC cars...

well done mate, this car is something truly special.

[Full-Race Geoff]

thanks guys, its going to be a long week but should have some good results in a few more days. very happy with the setup overall - the twinscroll turbo + tomei 280 is a killer combination

[T04GTR]

i strongly recommend that you use 100% genuine borgwarner airwerks turbochargers!!! Bullseye power is a knockoff of the BorgWarner, it is not the same.

so what is so bad about my s372r?

[Angus Smart]

Screw the expensive twin setup.. Borgwarner it is... Waiting on a reply from Geoff now. S300Sx3 or the 83/75 for cheaper price?? would love to know the differences between the two..

[T04GTR]

the 83-72 would be better in my opinion. the supra guys tent to think the 83mm turbine is to small for the 75 front wheel.

[T04GTR]

ps. feel free to come borrow mine to size it up/run if you want. pm for more info. its brand new. just dummy fitted. im just as interested as you are to see how it will go.. but my cars in bits..

[r33_racer]

Absolutely amazing build! I almost want to buy an s14 just to put your conversion kit in it!

Loving the work! I hope it all works out way better then expected!

[Angus Smart]

ps. feel free to come borrow mine to size it up/run if you want. pm for more info. its brand new. just dummy fitted. im just as interested as you are to see how it will go.. but my cars in bits..

Cheers for the offer i'm probably further away than you, i'm going to try fit it onto a Trust T88 manifold tho with a 50mm gate.. however looking at your photo the trust manifold may house the turbo too far back close to the shock tower..

still waiting on my motor too.. apparently a few weeks away..

[hpt_simon]

sounds nice geoff

cant wait to see a dyno graph, so anxious.

been looking for a turbo for my new 2.8 setup, something along the lines of 700whp and was thinking of a gt4088r, what diferences have you found this these new turbos?

simon

[T04GTR]

the trust turbo makes the comp cover fowl on the rocker cover.

[Angus Smart]

Ahh snap.. so i can bin that idea, was looking at photos of trust manifolds with t88's on them , looks like the t88 is tiny compared to these..

[Duncan]

car looked very settled in the vids....what did you learn from the day?

[Full-Race Geoff]

what a busy weekend, ive got a TON of pics/vids to sort thru and will make an update probably friday. phew its over!

now i get to start on a new race car... learned sooooooooo much

[NZM.031]

oh good.. can i have your old race car then??

[T04GTR]

riggs or undergroundmotorsports has a well documented bw swap. what made me get my one.

he used a trust manifold but had to chop it to re-angle the flange.

good read+vids and pics.

undergroundmotorsports build thread