Re: mystery of oil burning solved!

["Philip Erickson" <perickson@quorex.com>]

What I suspect is going on:
Most spring shims have radial grooves.  If this type was installed under the
spring perch/seal next to the head, it would allow oil to enter under the
perch bypassing the oil seal.
They moved the shim to on top of the spring perch next to the spring.  Oil
seeping under the shim would still have to go through the seal to enter the
combustion chamber.  They could have also used some sealer on the old shims.




Philip Erickson

67.5 SPL
69 SRL