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Yeah, Mark the MG mechanic said he's never seen a hole like that in the too if a piston in 25 years.
It can't all have been down to my driving, can it?
Apparently it was running lean which caused a hot combustion spot in the cylinder. It won't be clear til it's rebuilt what the root cause is.
I am also quite out of my depth of understanding of all this and am being guided by the paternal hand of @BRM.
mashton-
That's rotten dude. Perfect opportunity to stick a v8 in though...
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Total absolute bugger. Does sound like something else failed resulting in the piston failure, perhaps a fuel supply related issue and all 4 were running lean but that was the one that failed?
Gutted for you and big red! That car has almost suffered as many setbacks as me and my MX5s!
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This is very much a thing with 2 stroke motorbike engines. I found out one day when I rolled the throttle right off at 110 on my TZR250 and melted a hole in one of the pistons.
Jung
NurseHolliday
Airhead
Scheisse! Not great news :-(