No power with sr20 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

drftmark · 04-05-2008, 10:46 PM

My car is at a shop getting tuned right now and it isn't making any power with sard 850cc inejectors at 55% duty cycle at 10 psi.

Setup:
s15 sr20det
hks 256/256 step 1's
precision gt28rs .70 ar inlet/ .86 ar outlet
JE forged pistons, stock comp
walbro fuel pump
sard 850cc's
haltech e8

On the dyno he can only get it to hit barely 175hp on the dyno. Does anyone know anything to check for? I've searched and can't really find anything. Any help would be appreciated.

SoguRacing · 04-06-2008, 12:48 AM

maybe you're losing compression haha..bad valves/ check timing....

drftmark · 04-06-2008, 06:32 PM

timing is good, haven't done a compression test yet, anything else that could cause this, hopefully just something electrical?

04-05-2008, 10:46 PM	#1
drftmark Zilvia Junkie Join Date: Nov 2005 Location: tx Posts: 524 Trader Rating: (5) Feedback Score: 5 reviews	No power with sr20 My car is at a shop getting tuned right now and it isn't making any power with sard 850cc inejectors at 55% duty cycle at 10 psi. Setup: s15 sr20det hks 256/256 step 1's precision gt28rs .70 ar inlet/ .86 ar outlet JE forged pistons, stock comp walbro fuel pump sard 850cc's haltech e8 On the dyno he can only get it to hit barely 175hp on the dyno. Does anyone know anything to check for? I've searched and can't really find anything. Any help would be appreciated.

04-06-2008, 12:48 AM	#2
SoguRacing Post Whore! Join Date: Nov 2007 Location: (714) Age: 35 Posts: 2,967 Trader Rating: (23) Rides Gallery: SoguRacing Feedback Score: 23 reviews	maybe you're losing compression haha..bad valves/ check timing.... __________________ Pre Tune Checkup! Compression,LeakDown,Vacuum Test $80. Cams Install: $180

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04-06-2008, 06:32 PM	#3
drftmark Zilvia Junkie Join Date: Nov 2005 Location: tx Posts: 524 Trader Rating: (5) Feedback Score: 5 reviews	timing is good, haven't done a compression test yet, anything else that could cause this, hopefully just something electrical?