Forum

[Isettaman]

I'll give it a go with the lapping.
I've looked at Yamabond, which one should I use? There seems to be half a dozen different grades/types

[simon]

No from memory the 51 case is distinctly different so the Indian gasket won't do. It is very easy to make a gasket though. Our local parts place sells rolls of gasket paper as I imagine will yours. I think I used stuff that was about .5mm thick (or possibly a bit thinner) and simply printed the oiled crankcase half onto the paper and then cut it out with a Stanley knife. Never leaked a drop.

[PeteF]

I like Welseal. It's always worked for me even in marginal conditions.
Some people miss the fact that you must leave the joint open until the stuff "dries" before assembly. Also, don't use too much, just painting un with a small brush is enough - more is not better.