Good to know!I seen a a S13 vert with a gt28r making 300whp @ 15psi. But that turbo is maxed out @ 18.5 psi. could it of boosted to 18 and made more power? Or will it stop flowing @ 300whp?DrifterProdigy85 wrote:Garrett ratings are engine power, not wheel horsepower. Figure in the drivetrain loss and you'll get around 300whp. Garrett rates the 2871R at 475hp too but you will never see one getting to 475whp unless there spraying a 50 shot of nitrous to boot. I used to run one and can say there good to about 400-420whp.
he's right get a gt2871r .64DrifterProdigy85 wrote:T28 isnt getting anywhere close to 400whp. You can reach 300whp with the setup you have now. If you add some 264 cams, you may reach 315whp. Gotta go with a bigger turbo, cams, and intake manifold to really get higher numbers.
I dont think it can operate at 18 psi with that efficiency for longsupreamS14 wrote:Good to know! I seen a a S13 vert with a gt28r making 300whp @ 15psi. But that turbo is maxed out @ 18.5 psi. could it of boosted to 18 and made more power? Or will it stop flowing @ 300whp?
Id like to see a dyno chart of that. Best ive seen on T28 and stock cams is 305whp @ 20psi using a AEM EMS. ECU Tunes are usually right around 280-300whp as well @ 18-20psi.supreamS14 wrote:Good to know!I seen a a S13 vert with a gt28r making 300whp @ 15psi. But that turbo is maxed out @ 18.5 psi. could it of boosted to 18 and made more power? Or will it stop flowing @ 300whp?
Correct....300whp on the street with good tires and suspension would ideal for most people.....it just comes down to if you are most people....it would be a very very responsive setup, as stated aboveS14toRPS13 wrote:I agree with others. You're max will be about 300 whp @ about 18-20 psi. It's just the nature of the turbo. Although 300 whp isn't as sexy as 400 whp, it's still plenty on the street. Also with that set up you'll still have good response and a wide powerband.
i have a similar setup as drifterprodigy.. from the looks of it, yes the turbo is laggy but when it hits it hits , it's out off this worldDrifterProdigy85 wrote:And if your not like most people and want big power. Do what im doing. T3/T67 DBB.
T67.....I bet it hits hard. Only t67 car I ever drove was a 1g DSM. It was gross....in a good way. just way to laggy for my taste. Your guys cars are going to be madmen....its funnyDrifterProdigy85 wrote:Its a T3/T67 DBB and should be fast spooling around the 5krpm area. I run Tomei 270 Solid Cams and Tomei Solid Lifters. 8500rpm Rev Limit, only being limited by BC Valve Springs. Im restricted to power right now from my 740cc Injectors and MAF. Should be near 500whp @ 18psi though. The turbo is reported to hit 700whp @ 32psi. Im just waiting on IC piping then i can get to drive it. If i find it too laggy, i might spray a 50 shot for spool up. I dont think ill need that though cause my engine seems pretty free revving off boost.