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Lurch77
Premium
join:2001-11-22
Oconto, WI
kudos:4

[small engine] Well that's no good.

Piston skirt failure. 378cc 2 stroke. Now to get everything out of the case.






mibagent_x
Go giggle the handle
Premium
join:2001-03-04
Barnhart, MO

You sure the connecting rod didnt give out? Hope your cyn wall survived.



Lurch77
Premium
join:2001-11-22
Oconto, WI
kudos:4

This was on my brother in law's engine. The rod was still connected. This is a common issue with this engine, and a liquid cooling failure is suspected as the main issue in this case.



cdru
Go Colts
Premium,MVM
join:2003-05-14
Fort Wayne, IN
kudos:7

I'm surprised a cooling failure caused that. Just from where it broke I would have expected some type of stress from the rod. Maybe not enough to break the rod, but to destroy where it connects.



Lurch77
Premium
join:2001-11-22
Oconto, WI
kudos:4

I know it is hard to see in the picture, but where the connecting rod connects has no damage. The damage is limited to the skirt and the piston ports.

By the way, this particular engine model is known for piston skirt failure. The added stress of the failed cooling system was probably the straw that broke its back.