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M440 Chrysler High Oil Preasure Causes Leaks

G

georgeinbeverly

Contributing Member
"Oil Preasure at Idle is 80PSI

"Oil Preasure at Idle is 80PSI with Mechanical
gauge also... then Up from There ..
Its a Reverse rotataion Direct Drive Engine
The oil is leaking above the rear main seal
the retaining bolts for the rear main bearing
is threaded through the block and oil leaks
through the threads ,,,
So
1) cloged oil Passage at rear main seal
2) oil Preasure Relief Valve Bad ?
3) Head Gasget or blow By ,

Engine runs Great otherwise..
Fixes ?

1) SAE20W Oil
2) New Relief Valve Lower PSI Setting ?
3) Weld were Leaking ?
4) Tried high preasure Thread Paste N.G.
5) 15 degree angle or Reverse rotaion causing
problems with preasure

Any Help Please"
 
"SAE20W oil is way too thin, b

"SAE20W oil is way too thin, but if that's HOT idle oil pressure, then its way too high. (My 360s run a 60 plus cold idle pressure.)

Jeff"
 
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