The main reason for rebuilding the engine is that the gear lever was welded on when i got it, sooner or later I thought that the engine would need a rebuild but it kept on going, at around 65,000 I fitted a new cam chain and much to my surprise the engine had never been apart before! The clutch casing and head cover need to be removed to do the job and none of the locking tabs or bolts had been undone before and everything was in great condition, still on the original clutch, piston, rings, valves etc. It is still running pefectly strong today, it uses a bit of oil but blows no smoke at all, it now has 81,000 on the clock when I pulled it to pieces.
The head is is great condition, the valve have mushroomed a bit and have been sent away to be faced, I will recut the seats and it will be back to normal, the guides have no wear at all.
The valve pics are not the best!