Mine has done 120K +, not on the same engine however, the engine was built from plasticine I think it was terrible and knackered when I brought it, at that point it had a Pinto block lol, so it's on at least it's third engine with it's current properly built one which is the only one in my time.

A lesser model we have has done slightly more than the above, had it not been for a cambelt failure, that would still be on it's original engine now I should think!

Looked after, there no reason why they shoulden't do space ship miles!

Martin