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help w/ GT2871R

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#27 ·
ok, i have a few opinions about whats going on in this thread.

510-SR20DET - Do the t3 housing on the 2871R! I think it will work out great and would love to see a review from someone using one. I may go back and build a 2871R car again. I loved mine. I was using the .84 a/r with 3" comp side

pearl - you say you own a shop and that no 2871R car will hit 400whp. You are wrong!!!! thats all there is to it. On my stock bottom end, 264 cams and no port work of any kind, with a slipping clutch and only 1 (yes, only 1!!!) bolt holding the turbo onto the manifold, (couldn't keep the damn things from falling off) my car made 380whp. I know thats not the 400whp you're talking about, but I know I lost more than 20whp from the clutch and mani. I can 100% guarantee that my car made over 400hp. My car went 11.0 @ 124 (backed up many times) and also went 11.2 @ 128 (backed up with a 127 pass) all on the 2871R. I think my car weighed around 2800lbs.

also as a shop owner, I would expect you to be a little more respectful of others opinions. Not a great way to run a shop IMO but good luck with that.
 
#31 ·
sorry didn't even pay attention to who posted that dyno sheet. i thought it was another one posted from a diff forum proving that a 2871 can make 400whp. very nice trq for sure!!! you have an easy 11second car
 
#32 ·
You guys are trying to look at the most amount of power possible to get out of a turbo which really your most likely not going to see. From all the years ive had the 2871R and dynos ive come acrosss. The majority are around 370whp with the .64 and 385whp with the .86. Occassionally you come across someone making some extraordinary number like 430whp or something. Im not saying it cant be done but im saying the average isnt anywhere close to that. You really want over 400whp for sure, go with a 3071R or 30R. I never dynoed my 2871R setup but last time i went to the track i ran a 12.06 @ 121mph running 1.45 Bar and later found my base timing was only at 13*. With only 13* timing and running 121mph is right about 400whp with an S13. Later after i bumped up the timing to 15*, i did a Gtech pass on a straight road near me and did a 11.8 @ 124mph with 1.5 Bar. I imagine i was roughly about 415-425whp but i also have a Mazworx built bottom end, ported head, and solid lifter cam setup.
 
Discussion starter · #37 ·
This bad boy can push more (my tuner said) but i'm playing safe since its stock bottom end. Back to begin of the thread, i mentioned my goal is 400-410 rwhp and i reached my goal so i stopped at 402 which surprised me was the toque 371 lbft. gotta love zero traction. going for 450 when i have a built bottom end.
 
#38 ·
4x4le said:
good numbers, but im confused. It says fly wheel power and has a wheel speed as well. Im hoping those are whp numbers not bhp numbers.

It would be a tricky deal to actually engine dyno though lol.
Click to expand...
His graph is in whp. Thats just the wording on the sheet. You can change what that says. Dynapack measures power by 2 units that bolt to the hubs of the car.
 
#40 ·
s13envy said:
dont be a woman!! its an SR, its loves being pushed. stock bottom end SR's have been doing over 400hp for a while now. Just make sure its tuned properly.
Click to expand...
the bold part, to me, is just utter fail.

an engine is an engine. it will hold only how much it will hold. any particular motor "doesnt like to be pushed" any more than any other motor, it just happens to be built stronger from the factory.

the only exception, in my book, is an NA Honda motor. my accord with 300k+ miles still received a daily beating, and kept on trucking. but, in that case, we're only talking about what it was designed for, and nothing beyond that.
 
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4x4le
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