Stock Boost - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

sr20det.s13.240sx · 04-02-2003, 10:19 PM

hOW MUCH BOOST CAN I RUN ON STCK SR20DET? NO UPGRADES EXCEPT NURSPEC AND DOWNPIPE AND SUS INTAKE?

*sykikchimp* · 04-02-2003, 10:23 PM

40psi..

SEARCH!

RBS14 · 04-03-2003, 11:30 PM

i thought it was 45psi.......

*AceInHole* · 04-04-2003, 12:59 AM

Quote:

Originally posted by RBS14
i thought it was 45psi.......

of fuel pressure???

do we account for atmospheric pressure also??

*AceInHole* · 04-04-2003, 01:17 AM

Quote:

Originally posted by James
45psi? Stop joking with the newb --> giving him the tire pressures, lol :P

You could probably run 70-75psi on stock internals
75 is pushing it though.

isn't that bad compression?? Thought stock was around 160psi or something.

It's got nothing on the KA though. We gots 179 stock.

The Mole · 04-05-2003, 02:04 AM

which sr20det with what turbo? than can handle a good ammount on stock motor, but stock turbos can only push so far

theres always a debate about this...from all the different info ive read/gathered and local guys ive talked to, 13psi is max eff and the verge of damaging turbo for prolonged periods.

a guy named greg here in tampa got his stock s13 turbo rebuilt to factory specs, no upgrades and ran around on about 15pis for a month straight...then it went fizzle (lol)

but he did run like a 13.1 on just the boost increase

fun while it lasted i guess

-chris

s13ninja · 04-05-2003, 02:22 AM

simple question getting answered...............im guessisng your using a 240sx fuel pump, id leave the boost at stock 7psi. But, speaking of the t25 itself, 13-15psi is really pushing it.

Bbandit · 04-05-2003, 11:18 AM

are you asking about the t25 turbo on sr.. or the sr block itself?
t25 can be boosted up to 15 psi.. pass that and its not in its efficiency range anymore..
as for the sr block... i've seen local sr go for 20psi with T03.. ofcourse with internal jobs (pistons,etc) and upgraded injectors

The Mole · 04-05-2003, 08:50 PM

locally here, the guys do 20psi on stock sr bottoms and they run great and hold up properly tuned

04-02-2003, 10:19 PM	#1
sr20det.s13.240sx Join Date: Jan 2003 Location: Chicago, IL Posts: 1 Trader Rating: (0) Feedback Score: 0 reviews	Stock Boost hOW MUCH BOOST CAN I RUN ON STCK SR20DET? NO UPGRADES EXCEPT NURSPEC AND DOWNPIPE AND SUS INTAKE?

04-02-2003, 10:23 PM	#2
sykikchimp WOW addicted Join Date: Dec 2001 Location: the moon Age: 44 Posts: 6,525 Trader Rating: (0) Feedback Score: 0 reviews	40psi.. SEARCH! __________________

04-03-2003, 11:30 PM	#3
RBS14 Nissanaholic! Join Date: Feb 2003 Location: Santa Cruz/San Diego Posts: 2,271 Trader Rating: (0) Feedback Score: 0 reviews	i thought it was 45psi....... __________________

04-05-2003, 11:18 AM	#8
Bbandit Post Whore! Join Date: Mar 2002 Location: Texas and now Jakarta Age: 43 Posts: 2,674 Trader Rating: (0) Rides Gallery: Bbandit Feedback Score: 0 reviews	are you asking about the t25 turbo on sr.. or the sr block itself? t25 can be boosted up to 15 psi.. pass that and its not in its efficiency range anymore.. as for the sr block... i've seen local sr go for 20psi with T03.. ofcourse with internal jobs (pistons,etc) and upgraded injectors __________________ ==>>TGL GARAGE<<==.. RIP! S13 coupe KA-T @ 0.5 Bar = SOLD! A31 Cefiro + SR = Current

04-05-2003, 02:04 AM	#6
The Mole Leaky Injector Join Date: Jan 2003 Location: Tampa FL Age: 42 Posts: 93 Trader Rating: (0) Feedback Score: 0 reviews	which sr20det with what turbo? than can handle a good ammount on stock motor, but stock turbos can only push so far theres always a debate about this...from all the different info ive read/gathered and local guys ive talked to, 13psi is max eff and the verge of damaging turbo for prolonged periods. a guy named greg here in tampa got his stock s13 turbo rebuilt to factory specs, no upgrades and ran around on about 15pis for a month straight...then it went fizzle (lol) but he did run like a 13.1 on just the boost increase fun while it lasted i guess -chris

04-05-2003, 02:22 AM	#7
s13ninja Join Date: Feb 2003 Location: 707 Posts: 45 Trader Rating: (0) Feedback Score: 0 reviews	simple question getting answered...............im guessisng your using a 240sx fuel pump, id leave the boost at stock 7psi. But, speaking of the t25 itself, 13-15psi is really pushing it.

04-05-2003, 08:50 PM	#9
The Mole Leaky Injector Join Date: Jan 2003 Location: Tampa FL Age: 42 Posts: 93 Trader Rating: (0) Feedback Score: 0 reviews	locally here, the guys do 20psi on stock sr bottoms and they run great and hold up properly tuned