High all -- we are a small shop in Austin TX, West Coast Racing, specializing in Custom builds - on Vintage bikes - both street & competition. We have 2 1974 MX360's in right now, for race prep. First one, the barrel was badly scored, so it is on its way to LA Sleeve for a new sleeve and boring for a + 0.25 RT2 piston (it was at 1mm over), that came with the bike (only recently bought by customer) we sort of assumed that piston was correct -- but, can any confirm that please?
It also needs crank seals, and on pulling the clutch side case off, we find a LOT of slack in the crank balancer chain -- is this normal? Don't have a manual for the bikes - so, just going by 'feel'!! Will also need to be knowing what the piston ring gap should be, when we get the barrel back.
Cheers,
Brid.
PS -- Facebook page is www.facebook.com/westcoastracingvintage