would a leaking rear seal cause low oil pressure at idle when warm? Jeep in> question has 60 psi cold - then drops to 5-10 at idle after it warms up. new> mechanical autometer guage too.>

--> HomeBrewer

would a leaking rear seal cause low oil pressure at idle when warm? Jeep in> question has 60 psi cold - then drops to 5-10 at idle after it warms up. new> mechanical autometer guage too.>

--> HomeBrewer

HomeBrewer wrote:> >

????>

What are you talking about? I didn't see any reference to 240 degrees.

Jeff Strickland wrote:> >

I bought it used, they put idiots lights in for somebody else.>

The OP made no suggestion of overheating. He made no mention of heating at> all other than to say that the oil pressure dropped after the motor reached> normal operating tempurature, which is common.

And I was fishing for his problem knowing he recently rebuilt his> 304" which normally is never less than a hot idle of forty pounds.> Maybe, I should have told him he failed to prelude it's inserts.> God Bless America, Гџill O|||||||O> mailto:LWHughes3rd@­aol.com http://www.billhugh­es.com/>

Jeff Strickland wrote:> >

Are you running at 240 degrees? Switch to 20/50.> Your external oil pump commonly gets smacked by the differential,> if the bump stops were ever missing. It's pressure relief may be jammed> wide open. Jammed shut, usually blows the oil filter off. Usually takes> buy the whole timing chain cover:

How many miles on the engine?

The book calls for 10 psi per 1000 rpm, so your hot idle isn't too far> out. If it was too low, the valve train would start to get noisy after> idling for a while.

Mike> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00> 88 Cherokee 235 BFG AT's>

HomeBrewer wrote:>>

It has no unusual noice at all, and plenty of power. It idles at ~7-800 and> psi is above 10 at hot idle. I posted 5-10 psi, but after rechecking the> gauge it's above 10 psi at it's lowest.

It has no unusual noice at all, and plenty of power. It idles at ~7-800 and> psi is above 10 at hot idle. I posted 5-10 psi, but after rechecking the> gauge it's above 10 psi at it's lowest.>

You 'really' should have put a new set of main bearings and maybe a> re-turned crank in it.

That's still way too low, something wrong! A V8 by any manufacture> should never be less than forty pounds as we see in these mechanic's> guide lines: http://www.billhugh­es.com/amchpchart.jp­g

I found the problem. I removed the pan to replace the rear seal and found> the oil pickup screen clogged with excess rtv that came from the oil pan or> somewhere. There was also tons of rtv behind the original rear main seal> whic deformed the seal and caused the leak. After cleaning the pickup> screen, replacing the main bearings and rear main I now have 50-55 psi cold> and 30 psi hot idle.

I found the problem. I removed the pan to replace the rear seal and found> the oil pickup screen clogged with excess rtv that came from the oil pan or> somewhere. There was also tons of rtv behind the original rear main seal> whic deformed the seal and caused the leak. After cleaning the pickup> screen, replacing the main bearings and rear main I now have 50-55 psi cold> and 30 psi hot idle.