Piston Failure Analysis Guide

[Tomtall]

I was going thru some schooling lititure from days gone by and came by this article I had saved from a manufacturer of 2 stroke engines. I saved it due to the fact I thought it was one of the better compiled articles on two stroke piston failure analysis. Thought I would would share it with those here on BRF that are interested in this topic.

[Techteam]

Great Article, Thanks very much for posting

[David Weaver]

Are 3a,3b and 5. I have gotten to know these too well over the years!!:( :(

[DKL]

Thanks,
That is very good information,,, piston's doesn't show any wash though:confused:

[mercguy]

Are 3a,3b and 5. I have gotten to know these too well over the years!!:( :(

isn't that a compression release hole in 3B???:D

[Michael J Gwaltney]

I was going thru some schooling lititure from days gone by and came by this article I had saved from a manufacturer of 2 stroke engines. I saved it due to the fact I thought it was one of the better compiled articles on two stroke piston failure analysis. Thought I would would share it with those here on BRF that are interested in this topic.
I was a Johnson Service School Instructor in the seventies. I made a display of V-4 pistons with various failures and a sign What Happened? It always drew comments and questions.
I also displayed gearcase oil in glass mayo jars. Examples of New, Used, Water Contaminated, Gear Failure.
Pour some dirty gear oil in a jar, add some water and a few damaged parts. Oil/Water separation creates a conversation piece.