Max said:
> Not that it is any consolation to you, but one explanation that occurs to
> me is that there was a ridge around the top of the cylinder wall due to
> wear (as is typical), worn in through long periods of low RPM operation.
> Your more aggressive style (although not in itself inappropriate)
> resulted in higher piston speeds, which, combined with bearing wear and
> thermal expansion, allowed the top ring to contact this ridge with
> increasing force, until it eventually snapped.
I would say you are spot on Max. Add to that the new SU's feeding a stronger
charge into the cylinder, just to push the rings a little harder. How many
listers have rebuilt motors then blown a gearbox?
> Not your fault that the PO was a wimp
And she was a wimp too, very decorative, but...
Poor little MG, for three years it was loved, cherished, driven slowly and
lovingly, it's only purpose in life to look cool - then it landed me for an
owner. I'd like to believe the MG is loving every minute of it.
Cheers
Richard
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Anne and Richard Spurling
hobbes@senet.com.au
http://www.geocities.com/twisted-lines
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