Max. boost on a stock sr20???

[usncorpsman]

i searched around and all i got was how much boost the stock t25 can hold....i want to know how much boost a stock redtop sr20 motor can hold... not the turbo...

[S13240]

It is dependent on turbo.

[ILikeMy240sx]

Stock T25 + 370ccs + Stock MAF + Walbro + FMIC

14 psi and you are VERY close to the max limit.

I wouldn't push more than 15 psi on that setup. After that the turbo is way out of its efficiency range.

[da40]

well ive seen the SR hold alittle more the 400hp on the stock bottom end if that helps answer ur question

[ILikeMy240sx]

yeah stock bottom end can handle ALOT. Of course this is with ZERO detonation. Once you start detonating... there is no hope.

I remember Hybridynamics was dynoing their car and the vac line to the wastegate popped off during their session and they ended up making over 600 HP on the stock bottom end lol.

I doubt it will last much with that much power but still very impressive.

[maroon240]

Stock T25 + 370ccs + Stock MAF + Walbro + FMIC

14 psi and you are VERY close to the max limit.

I wouldn't push more than 15 psi on that setup. After that the turbo is way out of its efficiency range.

Yea, my friend ran 15 on a stock sr20, and blew it. do 12 to be safe cuz if it gets cold out side then it could be like your really running 15 or what not cuz when it gets cold you boost goes up.

[adrianfromthecastle]

S13 Red-Top T25:Compressor: T-25, 60 trim 56mm 0.64 A/R BCI-1 compressor.Turbine: T-25, 62 trim 53.8mm 0.80 A/R turbine housing.Stock Boost: 7 psiSafe Boost: > 13-15 psi After that The Turbo is past it's efficiencyMax Boost: 17 psiHP Ratings: 240 - 250 RWHPType of Bearings: Journal Bearing

S13 Black-Top T25:Compressor: T-25, 60 trim 56mm 0.64 A/R BCI-1 compressor.Turbine: T-25, 62 trim 53.8mm 0.80 A/R turbine housing.Stock Boost: 7 psiSafe Boost: > 13-15 psi After that The Turbo is past it's efficiencyMax Boost: 17 psiHP Ratings: 240 - 250 RWHPType of Bearings: Journal Bearing

S14 Black-Top T28:Compressor: T-28, 60 trim 60 mm 0.60 A/R BCI-1 compressor in T-04B housing Turbine: T-25, 62 trim 53.8mm 0.64 A/R turbine housing. Stock Boost: 7 psiSafe Boost: > 13-15 psi After that The Turbo is past it's efficiencyMax Boost: 17 psiHP Ratings: 270 - 280 RWHPType of Bearings: Ball Bearing

S15 Black-Top T28:Compressor: T-28, 60 trim 60 mm 0.60 A/R BCI-1 compressor in T-04B housing Turbine: T-25, 62 trim 53.8mm 0.64 A/R turbine housing. Stock Boost: 7 psiSafe Boost: > 15 - 18 psi After that The Turbo is past it's efficiencyMax Boost: 20 psiHP Ratings: Approx. 300 RWHPType of Bearings: Ball Bearing

[sunnys14]

correction, s14 t28 and s15 t28 are exactly the same specs, EXCEPT for the divided wastegate and inconel wheel. other than that, they can boost exactly the same (15-18psi)

[usncorpsman]

ok...you guys arent getting the point...i dont care if ive got the biggest friggin turbo there is and can hold up to 1000psi of boost.... what can the MOTOR take...stock

[Emperor_Tha]

20-22psi safely on stock bottom

[redline19]

without a headgasket upgrade, I wouldn't push it past 20lbs of boost. I would say in the range of 18lbs is more reasonable for a stock SR given that it is tuned correctly.

[S13240]

I think what you should be asking is, how much horsepower can a stock sr20det make? Max boost varies from turbo to turbo on any engine.

20 psi on a GT2871r doable on stock sr block, 20 psi on a GT42R cannot

As in horsepower numbers on stock sr block at least is 520+ whp from phase2.

[usncorpsman]

now thats exactly what i was asking for....thank you very much...