What is Perfect factory compression for SR20DET? (i searched) - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

sepulchral · 01-23-2005, 07:11 AM

I searched "perfect compression" and it showed abunch of cars for sale. Anyways I think its 185psi on a fully warmed up motor. Is that right? What is good compression on a cold motor?

CKAMC · 01-23-2005, 04:06 PM

185psi!?!?! more info please about what ur going to do or want to do then we can help more

**ThatGuy** · 01-23-2005, 04:14 PM

This is a Tech question, let's put it in the right section.

*HaLo* · 01-23-2005, 05:03 PM

156 psi is oem spec considered max. Check your local FSM.

HATchTRICK · 01-23-2005, 08:35 PM

Quote:

Originally Posted by ThatGuy

This is a Tech question, let's put it in the right section.

Where else should he ask it then? This is tech section...

He just wants to know the stock compression on a stock motor that is not installed in a car for testing purpose's i believe... Good question. I'd like to know as well.

**ThatGuy** · 01-23-2005, 08:39 PM

Quote:

Originally Posted by HATchTRICK

Where else should he ask it then? This is tech section...

He just wants to know the stock compression on a stock motor that is not installed in a car for testing purpose's i believe... Good question. I'd like to know as well.

No shit, I moved it here.

racer98 · 01-23-2005, 09:11 PM

it depends on the motor and what version it is

S13 Red, S13 Black
S14
S15

also other things too consider is if the motor has an After mkt H/G

the best place to get the Nissan Facotry spec for compression is in the Service manual for the Spec year of the SR20DET your talking about.

dasalnt · 01-23-2005, 09:20 PM

does anyone know the stock compression on a s13 redtop?

the head · 01-24-2005, 08:18 AM

My s13 black top was 150 all across IIRC manual for S13 sr states a range 130-156 and a spread of no more than 4 or 5 psi across all cyl

01-23-2005, 07:11 AM	#1
sepulchral BANNED Join Date: Mar 2004 Location: Midlothian. VA Posts: 2,050 Trader Rating: (0) Feedback Score: 0 reviews	What is Perfect factory compression for SR20DET? (i searched) I searched "perfect compression" and it showed abunch of cars for sale. Anyways I think its 185psi on a fully warmed up motor. Is that right? What is good compression on a cold motor?

01-23-2005, 04:06 PM	#2
CKAMC Post Whore! Join Date: Mar 2004 Location: Desert Age: 38 Posts: 4,804 Trader Rating: (0) Feedback Score: 0 reviews	185psi!?!?! more info please about what ur going to do or want to do then we can help more __________________

01-23-2005, 04:14 PM	#3
ThatGuy Admin Asshole Join Date: Mar 2002 Location: Retired Age: 45 Posts: 20,394 Trader Rating: (0) Rides Gallery: ThatGuy Feedback Score: 0 reviews	This is a Tech question, let's put it in the right section. __________________ "Speak softly,..." -Pres. Teddy Roosevelt "Be polite, be professional, ..." -Gen. James Mattis

01-23-2005, 05:03 PM	#4
HaLo from Canada, eh! Join Date: Sep 2001 Location: Montreal, Quebec Age: 46 Posts: 5,201 Trader Rating: (0) Rides Gallery: HaLo Feedback Score: 0 reviews	156 psi is oem spec considered max. Check your local FSM. __________________ -> HaLo Race Car: '98 E36 BMW M3 Daily Drivers: '23 Audi Q4 e-tron & '13 VW Touareg SOLD: 01 GPW Honda S2000 PARTED: 93 Pearl White 240SX LE Fastback w/SR20DET SOLD: 93 Super White 240SX SE Convertible w/Silvia Front

01-24-2005, 08:18 AM	#9
the head Nissanaholic! Join Date: Jul 2002 Location: in a dark room mastering the art of typing with one hand Posts: 2,164 Trader Rating: (3) Feedback Score: 3 reviews	My s13 black top was 150 all across IIRC manual for S13 sr states a range 130-156 and a spread of no more than 4 or 5 psi across all cyl __________________ I never knew you could do that with an eggplant

01-23-2005, 09:11 PM	#7
racer98 Post Whore! Join Date: Jul 2003 Location: 六本木 Age: 47 Posts: 6,202 Trader Rating: (128) Feedback Score: 128 reviews	it depends on the motor and what version it is S13 Red, S13 Black S14 S15 also other things too consider is if the motor has an After mkt H/G the best place to get the Nissan Facotry spec for compression is in the Service manual for the Spec year of the SR20DET your talking about.

01-23-2005, 09:20 PM	#8
dasalnt Leaky Injector Join Date: Jul 2003 Location: socal Posts: 122 Trader Rating: (0) Feedback Score: 0 reviews	does anyone know the stock compression on a s13 redtop?