AndrewHarvey
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- Jan 17, 2015
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Ian - You show outstanding persistence - I would of junked the barrels and pistons by now
Now you need to find out.....
Now you need to find out.....
Ian - You show outstanding persistence - I would of junked the barrels and pistons by now
Now you need to find out.....
Greetings All,
Just heard back from my engine guru with the following news. The cylinder bores are 5 thou oversize - in metric speak that's a bore of 80.13mm. The piston to bore clearance is 10 thou - or 0.26mm. My man says that this is excessive and may be part of the overall problem. There is a distinct possibility that the cylinders have been badly bored out (I suspect from 652) and 80mm pistons put in with a resulting minimum of wear life before trouble. The original pistons are 'Hepolite' and are listed in the catalogue, so after a check and measure of the cylinder wall thickness (rebore?) we may be able to find a piston to fit correctly??? Or it's a new barrel and piston set to purchase?????? I'll get back with news when I know, but it looks like a classic example (bad) of an engine being thrown together rather than built correctly!!!!!!!!!!!!
Ian.