Apologies - I must have slipped into Australian backyard mechanical for a moment there.
(I keep forgetting we are divided by a common language).
Paul got it - what you describe as the bottom end. Where the conrod connects with the camshaft. The high speed was too much for it and the white metal melted on two of the ends, the ends became loose with one getting quite out of shape. Very noisy. Amazingly she still could pull quite well.
Quick action of pulling over meant the damage was limited.
At what mileage? Well if you are to believe the speedometer then it happened 80000miles and I'm currently at 80600. Dont think thats the first time round somehow. QED: When we pulled the camshaft out and measured the tolerances it was as about as straight as a banana! Must have been whipping around something awful at that speed.
I read the old email link thanks - Did Glenn Tyler get his gears made up after all I wonder?
Regards
David
_________________________
David Thomson
BCA#43539,
Buick Car Club of Australia, NSW
1938 90L McLaughlin-Buick
1966 3.8 Jaguar Mk2
1971 Morris Minor 1000