oil pressure

Discuss the RB20, RB25 and RB26 series engines.
osolorb
Posts: 57
Joined: Sun Sep 02, 2007 3:01 pm
Car: 1992 240sx fastback rb20det

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i have an rb20 in my s13. i noticed the oil pressure was at like 15 pounds at idle, what should it be. i changed the oil today to see if it changed but it did'nt. im running castrol gtx 10w 30. thanx guys


tintdude69
Posts: 130
Joined: Sun Oct 15, 2006 6:36 pm
Car: 90 Sr20 hatch..

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thats fine thats where mine sits at idle. the fsm calls for 1 kg/cm2 at idle which is 14.2psi, then 42psi at 3k, and 56psi at 6k

osolorb
Posts: 57
Joined: Sun Sep 02, 2007 3:01 pm
Car: 1992 240sx fastback rb20det

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How do I set the idle and what should it be? Mine is 200-250 it sometimes doesn't stay idling... it stalls!

tintdude69
Posts: 130
Joined: Sun Oct 15, 2006 6:36 pm
Car: 90 Sr20 hatch..

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it should be at 600. go here and download the fsm and it will help you on almost every question you would ever have... http://skylineking.com/info.html

osolorb
Posts: 57
Joined: Sun Sep 02, 2007 3:01 pm
Car: 1992 240sx fastback rb20det

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thanx for the info man. we r pretty close to each other, r there any meets or hang-outs near me. thanx again.

rb25drag
Posts: 1311
Joined: Mon Sep 24, 2007 9:51 am
Car: 1990 Nissan 240SX 5.3 Chevy + 60mm turbo + blow threw carb.

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My rb25 Cold holds 100lbs at idleHot 40-60lbs at idle.ON the throttle almost 120lbs

Im not sure of wat stock is.

If your bearings start wearing out thats when your oil pressure decreases.I have all new race bearings with tight clearances so thats why mine is so high.

otis
Posts: 38
Joined: Sun Feb 01, 2004 8:29 pm
Car: 93 mazda Rx7 R1

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rb25drag wrote:My rb25 Cold holds 100lbs at idleHot 40-60lbs at idle.ON the throttle almost 120lbs

Im not sure of wat stock is.

If your bearings start wearing out thats when your oil pressure decreases.I have all new race bearings with tight clearances so thats why mine is so high.
the FSM says the rb25 pressure would be .11MPa (15.9psi). damn, yours is high!!! mine is around 23pounds hot.


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