A warning to all 650 lovers , I got sold a 840 conversion via ebay for a lage amount of money and took all my engine spares as part payment ensuring me it would be reliable etc. (I would have happily kept one of the two engines and given the more cash ) . The only good thing i can say is its very fast however it has been leaking oil from various places since the word go, to start with I keep finding old O-rings that are flat and obviously 30 years old and it leaked from every rocker cover and the cam chain tentioner (this wasn't even done up), Ok tweak it ride to MOT , now leaking from oil feed to the head so i take it back 150 miles to have him have a look and set it up on the dyno , get it home go out for a ride , hmmm still leaking :-( , attempt 3 i think i over did the union , OK my cock up , take it back grovel and part with £150 to put a helicoil in (complete strip down to gain access ) ok fair enough ! I get halfway home to find its still leaking from the base gasket quite a lot to form a puddle on the top of the cases , ring him up , re tougque to 30 foot pounds , still leaks , and i notice leaking from the cam end caps and clutch pushrod seal (did he re use all the old seals ??) rung up and dropped bike off , go back to collect had a bloody good look , oh still leaking , I was left outside being ignored all afternoon " i dont know what to sugest" he says ! Ok so iv just blown £1700 on a peice of shit !!! and now have no spares !!! Im prety sure iv been lied to regarding testing and the ineeling of gaskets (copper head and base) , the fix on the oil feed looks nasty and to be honest the paint he used to tart it up is falling off where the oil is leaking so much ! I feel I have been ripped off roaly as every trip back costs me at least £120 !
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