Oil pressure questions

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Jan 4, 2012 | 02:17 AM

#21

xDIRTYx

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From: So Cal

Quote:

Originally Posted by RonSSNova

I believe he means washers as shims for the pressure releif spring.

You are correct

Quote:

Originally Posted by USA-1 HP

Does the oil pan need to be unbolted at all for the pump replacement?

not at all

Jan 4, 2012 | 02:20 AM

#22

xDIRTYx

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From: So Cal

So after getting it all back together and not having any pressure i pulled it all apart again to find the oring pinched. After getting it back together with the proper oring my cold pressure is much better.. 70* 65psi, but hot pressure is still low 200* 14psi.

Jan 4, 2012 | 08:51 AM

#23

Eric D

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Joined: May 2008

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From: Howell Michigan

St. Jude Donor '09-'10-'11

Quote:

Originally Posted by xDIRTYx

What is the pressure at a new cold start? Are you using the same oil filter or did you change it?

Jan 4, 2012 | 09:28 AM

#24

lucky131969

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From: Dyer, IN

Quote:

Originally Posted by xDIRTYx

Unless I missed something, I don't see where you verified the oil pressure with a mechanical gauge.

Knowing that the motor was built with "loose" clearances, and not knowing how loose, you may just be chasing your tail.

Jan 4, 2012 | 08:55 PM

#25

xDIRTYx

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From: So Cal

Quote:

Originally Posted by lucky131969

I have not yet done this, but I have replaced the sender with a brand new one, and still have the same readings. I know i need to get ahold of a mechanical gauge and test the pressure, im going to try and get one tomorrow

Im using the same but brand new pf46 filter

Jan 4, 2012 | 08:58 PM

#26

xDIRTYx

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From: So Cal

Quote:

Originally Posted by Eric D

What is the pressure at a new cold start? Are you using the same oil filter or did you change it?

Today's first start yielded 65psi then worked its way back to 12psi @ 226 degree oil temps after a driving a bit

194* oil temp = soild 15psi

Last edited by xDIRTYx; Jan 4, 2012 at 09:10 PM.

Feb 25, 2012 | 07:26 PM

#27

The Highlander

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From: Brighton, MI

Any updates to this?

Feb 28, 2012 | 08:34 PM

#28

xDIRTYx

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From: So Cal

Quote:

Originally Posted by highlanderc

Any updates to this?

None yet, Ive been slammed with work and havent had the time to or energy to work on the car. Im going check the cam retainer plate next to make sure it is fully tightened and has a good seal

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Feb 29, 2012 | 09:46 PM

#29

TOPTRANSMAN

4th Gear

Joined: Feb 2012

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Specs

Has anyone looked at the GM specs on LS1 oil pressure?
Hot- w/ 5-30 synthetic ( min. pressure)
1000 rpm 6 psi
2000 rpm 18 psi
4000 rpm 24 psi
WOW seems low to me!

Last edited by TOPTRANSMAN; Feb 29, 2012 at 09:51 PM.

Mar 5, 2012 | 05:43 PM

#30

MongoosC5

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Joined: Feb 2002

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From: Daphne AL

Mine is having the same issue. Great pressure when cold but drops to 10 when at operating temp.

Oct 26, 2013 | 08:25 AM

#31

Z06ufgrad2002

Safety Car

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From: Melbourne FL

Any updates on this thread?

Oct 28, 2013 | 12:52 PM

#32

MongoosC5

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From: Daphne AL

Mine turned out to be worn cam bearings...but I suppose 75k (not-so-easy) miles out of a N/A 500+ hp LS6 isn't anything for me to gripe about

Had it rebuilt with a high volume Melling pump (mooaarr oil!) and heat treated bearings (better longevity). Hot idle never goes below 45 psi

Dec 13, 2014 | 01:11 AM

#33

cor28vettes

Race Director

Joined: Sep 2006

Posts: 11,141

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From: Santa Rosa Beach FL

Quote:

Originally Posted by TOPTRANSMAN

Has anyone looked at the GM specs on LS1 oil pressure?
Hot- w/ 5-30 synthetic ( min. pressure)
1000 rpm 6 psi
2000 rpm 18 psi
4000 rpm 24 psi
WOW seems low to me!

Yes. What about this?

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