rear seal leak
 

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

Re: rear seal leak
 

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:
http://www.drivetrain.com/jeepengineparts.html
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

HomeBrewer wrote:
>
> 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

Re: rear seal leak
 

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:
http://www.drivetrain.com/jeepengineparts.html
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

HomeBrewer wrote:
>
> 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

Re: rear seal leak
 

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:
http://www.drivetrain.com/jeepengineparts.html
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

HomeBrewer wrote:
>
> 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

Re: rear seal leak
 

Nope.

The crank seals don't really relate to oil pressure, just the bearing
clearances.

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:
>
> 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

Re: rear seal leak
 

Nope.

The crank seals don't really relate to oil pressure, just the bearing
clearances.

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:
>
> 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

Re: rear seal leak
 

Nope.

The crank seals don't really relate to oil pressure, just the bearing
clearances.

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:
>
> 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

Re: rear seal leak
 

????

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





"L.W. (ßill) ------ III" <----------@cox.net> wrote in message
news:424B9DF4.AD3E7593@cox.net...
> 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:
> http://www.drivetrain.com/jeepengineparts.html
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> HomeBrewer wrote:
> >
> > 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

Re: rear seal leak
 

????

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





"L.W. (ßill) ------ III" <----------@cox.net> wrote in message
news:424B9DF4.AD3E7593@cox.net...
> 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:
> http://www.drivetrain.com/jeepengineparts.html
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> HomeBrewer wrote:
> >
> > 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

Re: rear seal leak
 

????

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





"L.W. (ßill) ------ III" <----------@cox.net> wrote in message
news:424B9DF4.AD3E7593@cox.net...
> 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:
> http://www.drivetrain.com/jeepengineparts.html
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> HomeBrewer wrote:
> >
> > 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