SR MODS AND HORSEPOWER

[michaelmontuori]

ok so heres my thing, im having my car dynoed in about a week and i want some estimates from people here on the forum since nico=god

car:1989 coupemotor: redtop sr20detmods: mishimoto radiator/electric fan combofull 3 inch custom exhaust, stock turbo elbow, no catt28 from an s14hks actuator running 12PSIhks intercooler core w/custom piping hks ssqvcustom inlet pipe w/apexi air intake and ka24e maf

ok now i THINK im making around 250-275 at the wheels

what does nico think im making?

ANYONE feel free to bust open this thread and help me out a bit, give me some tips on making it to the 300 wheel mark and what i might need to get there or to get to 300-350 at the wheels

thanks to all!

[V8slayr]

Probably around 230-240whp. Don't think you will ever see 300rwhp w/ that turbo. The dyno is a heartbreaker alot of times. I've seen time and time again people going thinking there gonna make a certain number and miss it by 20 or 30 hp, including myself. I've taught myself to be pessimistic about such things.

[rc1honda]

Yeah i think you will be lucky to see 250 at the wheels. You really don't have any performace upgrades that really up the power. Your car will breath easy and stay cool but that turbo doesn't move enough air at 12psi. And 12 psi is really not that high. If you had cams and head work i would say you might be able to pull 285 on a dynojet. I am guessing 230 at the wheels. If you wanna hit 300 easily you will need a at least a 2871r turbo either 64 or 86. You will also need some bigger injectors 550cc will do it but i woulg get 740cc and call it a day. If you 740s with a 2871r, cams some head work and a good head gasket you will lay down 350 to wheels no problem all day long at maybe 15-16 psi.

[Kalypso]

I'll say 275hp...

[v6z24e]

...If you wanna hit 300 easily you will need a at least a 2871r turbo either 64 or 86. You will also need some bigger injectors 550cc will do it but i woulg get 740cc and call it a day. If you 740s with a 2871r, cams some head work and a good head gasket you will lay down 350 to wheels no problem all day long at maybe 15-16 psi.

Do you have alot of exp with the 2871? That's close to where my goal is atm. right now I have-->

redtop-stock internals/turbo running OEM SR20 ECU-shortie header/over sized turn down w/ 3in turbo back (no cat)-no a/c or p/s-FMIC w/blitz intake-lightweight alt/water pump pullys-MBC running 15lbs, 255 fuel pump

I've guessed its peaking ~250@wheels right now. And plan on adding a Z32 MAf, bigger injectors, the 2871, maxing it out, goal is mid-upper 300's @wheels. Think its possible? I will be adding ARP head studs and a metal head gasket when the bigger turbo goes on. I've thought about the Greddy IM and cams, but don't know if they are worth the money for the power range I want.

[rc1honda]

Yeah i have the 2871 .86 turbo on my car and i love it. I have it set to to 15 psi and it pulls real hard. I also have the head ported/polished with BC valve springs retainers and HKS 264 stage 2 cams. I use the stock intake manifold and it works good. I have heard of a lot o guys pushing 400hp with the 2871 .64 turbo. I like the .86 just fine and spools almost the same. The 2871 at 18-20 psi with good suporting mods will easily hit the high 300 range. If your going to putting that turbo on i would definitly get a MLS head gasket and ARP studs. You going to need a good tune though. If you don't have the money for a standalone a SAFC will work but i would recomend a rom tune.

[v6z24e]

Yeah i have the 2871 .86 turbo on my car and i love it. I have it set to to 15 psi and it pulls real hard. I also have the head ported/polished with BC valve springs retainers and HKS 264 stage 2 cams. I use the stock intake manifold and it works good. I have heard of a lot o guys pushing 400hp with the 2871 .64 turbo. I like the .86 just fine and spools almost the same. The 2871 at 18-20 psi with good suporting mods will easily hit the high 300 range. If your going to putting that turbo on i would definitly get a MLS head gasket and ARP studs. You going to need a good tune though. If you don't have the money for a standalone a SAFC will work but i would recomend a rom tune.

Thanks, I'm still new to turbo tech's. The .86 is a little larger than the .64? More power and slower spool? What psi do they both max out at before you are just over working the turbo? I've heard the s13 t25 max's at 14 or 15lbs dependin on who said it. 15 may be just outside the efficentcy range, but isn't so far out that it will blow it quick, so thats why mine's there.

I will be getting a Jim Wolf ECU when the time comes. Most likely my winter project. The car is hella fun right now, and LSD needs to come first.

Thanks for the answers, hope I'm not thread jacking to bad. This is still kinda on topic

[S14toRPS13]

Around 230 whp if even that much.

If you want 300 whp you'll need atleast a S15 turbo, but the better choice would be the 2871R.