Dirty oil, part II

"Dan Luke" wrote in message
...

"Jim Burns" wrote:

From Sac Sky Ranch:
1. Blowby of combustion gases past the piston ring belt. Accompanied by
high
oil temperature and increased oil flow out engine breather. Check engine
compression.

Borescopes and compressions were ok, but I still think it was something
like this that was going undetected. But what?


oil temperatures. (any carbon deposits in the screen or
filter?)

Oil temp. was monitored on the JPI engine analyzer with a high alarm
setting of 215 deg. F. Never had an alarm.



3. Contamination of oil.

That's what my regular mechanic said.

--
Dan
T-182T at BFM

Lets see 2 or 3 Compression Rings? is the Oilier (2 Scrapers And An
Expander) above or below the wrist pin? If it is above the wristpin
depending on piston design the 2nd or 3rd lower compression ring land is
probably slightly bent or tollerances to tight and binding the oilier witch
will not show on a leak down test but will cause lots of blow-by and or heat
when operating at a higher rpm. many other things are possible.