Have my '86 Westy back from Mazatlan and looking through the motor. Blown
head gaskets both sides. When I pulled an exhaust pipe from one head, a
quart (at least) of oil ran out of the pipe. If it got in through the
bottom of the cylinder past rings (all rings look OK but some major scoring
on cylinder walls of 2 adjoining cylinders) it could have been pumped out
on the exhaust stroke... or could it have been a sticky hydraulic lifter
holding open the intake valve and sucking oil in? or something else? Should
I check the lifters? Soak them in ATF for awhile? Go ahead and assemble the
motor?

I have a spare motor, both heads bad, but two perfect cylinders for the
repair.