Reply To: Valve Stem Seals

[Nigel WatlingParticipant]

Hi Philippe

Thank you for replying, apologies I have only given half the story, the engine was rebuilt with new piston and liners, crank regrind, valves, hardened seats and guides, pump etc a while back. and the reason for the strip down was after 100 miles it developed a knock, so sump off big ends checked (all ok) so then removed head, took pistons out looking a bit deeper but nothing found as all measured in tolerance so rebuilt with new shells and seal location change as previously stated after which it started smoking.

I may have jumped the gun a bit because after refitting the head and doing the re-torque no amount of idling or revving would clear the blue smoke but after taking it for a ten mile run yesterday its now very much cleaner.

Will keep you posted.

Regards

Nigel