Want to hear from lifter spalling victims

On Tue, 10 Feb 2004 20:21:41 GMT, "Roger Long"
om wrote:

I am looking into the possibility that a large number of substandard quality
valve lifters were introduced into the supply pipeline in the late 90's. If
you have experienced lifter spalling at mid TBO or before, I would like to
talk to you. I am particularly interested in cases where there are no
obvious causes such as long periods of down time, lack of preheating in cold
weather, etc. Please reply directly and not by post.

If you're referring to Brand "L", I'd recommend add high cruise
CHT/oil temp as an "obvious cause".

TC

It effects more than one engine brand.

The engine model with the worst reputation for being a lifter eater has low
CHT's, excellent oil flow to the heads, and a large oil cooler.

--
Roger Long

Roger Long wrote:
It effects more than one engine brand.

The engine model with the worst reputation for being a lifter eater has low
CHT's, excellent oil flow to the heads, and a large oil cooler.

Here's an article that describes one possible cause of spalling in Lycoming engines:

http://www.prime-mover.com/Engines/Marvel/suicide.html

....and a list of related articles:

http://www.prime-mover.com/Engines/Marvel/index.html

There's lots of other good engine-related stuff at this site.

Mark/C182L

On Tue, 10 Feb 2004 20:21:41 GMT, "Roger Long"
om wrote:

I am looking into the possibility that a large number of substandard quality
valve lifters were introduced into the supply pipeline in the late 90's. If
you have experienced lifter spalling at mid TBO or before, I would like to
talk to you. I am particularly interested in cases where there are no
obvious causes such as long periods of down time, lack of preheating in cold
weather, etc. Please reply directly and not by post.


Oils. Ask about oils. Some oils have been known to damage cams and
lifters, especially in brand L engines. That's why the maker wants you
to use an oil with the special additive in it.

Dan