[hoffit]

Can't wait to see it running.

BTW - Thanks again for helping me out when my car did a big DNF at the RS Tune.

[STi_1212]

Its been awhile since the last update. What prompted this turbo swap, the need to step on up to bigger and better things? Outta curiosity what were the previous #'s on the 40r?

[fobiawrx]

well i ran the 40r all last summer and had fun with it on the stock motor. only tuned it to see 23psi. and with that it made 450whp with 19 degrees of timing. so mild tune but was fun. the change was for a number of reasons. people in mn are getting fast and im trying to keep up with them. so i want to try max the car as much as i can and with what the motor will be and what i have planed for the future this was my choice. also wanted to be a little different now that every one is getting 40r's. and i got one hell of a deal on this turbo from map. so on with the new project.

[fobiawrx]

well did some work tonight. cut down the header about two inches and re welded it. also re worked the end tank on the intercooler to give room for the v band clamp on the compressor housing. so i went and stole my bumper back from the painter to test fitment. funniest thing is that i have more room now then the 40R as far as clearances. hear is some pics:

[fobiawrx]

well finished up the exhaust tonight. everything fits well and should work sweet once it is all running. still need to get the v-band in the mail for finishing up the end tank on the ic but other then that theres not much more to fab tell i get more parts. hears some pics:

[Pitcherman]

Man that thing looks ridiculous....in a good way.

[tyler_sti]

That custom exhaust is amazing! I really give it to you on this project man!

[modaddict]

Holy lag batman!

I applaud you for putting that large of turbo on our cars.

[STi_1212]

Oh man that is wicked how you routed the exhaust. I've seen a pic of an evo with a similar exhaust routing floating around on here and always thought it would be cool if someone did something similar on our cars. Hats off to ya for ingenuity.

[boost_happy]

HOLY LOUD EXHAUST!! That has to be loud at WOT. And that endtank on the intercooler scares me, but you have to know whats going on with that. Would love a video when its done. Not only that but I can smell the plastic burning from here, haha.

[STIBungy]

I bet it will spool faster than a GT40R installed in the typical location of a rotated mount turbo kit. He's shortened his exhaust manifold runners by quite a bit and the turbo's compressor outlet will feed directly into the fmic, shortening his ic piping considerably.

Originally Posted by modaddict

Holy lag batman!

I applaud you for putting that large of turbo on our cars.

[fobiawrx]

maybe to a single scroll 40r? should spool by 4800-5k

[underground]

Like yourself, I upgraded from a GT4088R (.95 A/R) to a S374 (1.10 A/R) on my RB26 240SX.

Good move, as the new turbo spools just as quickly as the GT40R.

I maxed out the 1000cc injectors on E85 last weekend, and will be heading back to the dyno tomorrow to see what kind of power I can get out of the 1600's....I'll post a new dyno graph hopefully tomorrow night to give you an idea of how this turbo flows on a 2.6L motor...

Feel free to check out the build photos, dyno graph, etc.

Underground Motorsports Demo Car 1998 RB26DET 240SX E85 Pump Fuel, 19 PSI of Boost 642whp/442tq Borg Warner S374 Turbo, 1000cc Injectors, Tial 60mm Wastegate, AEM EMS - Video







GT4088R (17 PSI) vs S374 (19 PSI)

[modaddict]

Originally Posted by STIBungy

I bet it will spool faster than a GT40R installed in the typical location of a rotated mount turbo kit. He's shortened his exhaust manifold runners by quite a bit and the turbo's compressor outlet will feed directly into the fmic, shortening his ic piping considerably.

Originally Posted by fobiawrx

maybe to a single scroll 40r? should spool by 4800-5k

Originally Posted by underground

GT4088R (17 PSI) vs S374 (19 PSI)

lol....not even close to a 4088 according to this dyno chart (on a 2.6 no less).

should make some good power for 1500rpms. You see he's running out to 8500?

[fobiawrx]

im going to have to take this all with a grain of salt hear. we have two different motors. different heads, both have a 2.65 but one is a six cylinder. both cars are going to be totally different along with i plan on using the .90 ar first and maybe switching to th 1.00 and never using the 1.10.