After a belt issue, I think my piston has clattered valves in the horizontal cylinder. There is almost no compression on the cylinder. I am going to strip it down and see what the damage is, so anyone got any advice or tips for me before I start? Cheers, A
Well, the tear down went poretty well, I managed to get the thing out by removing just the airbox, the throttle assembley, the rad and the oil and water connectors. Only one stud required drilling and I didn't have to disconnect the oil cooler, just move it out of the way. The even better news is that the piston looks OK, just a small scratch where it clattered the exhaust valve and did this: So, I took the head to the local independent guy who good naturedly berated me for turning the eccentric belt tensioner the wrong way and then said I was lucky the damage wasn't worse. He reckons two new exhaust valves and a lap in should see it right. Happy days! Still, it's all a learning experience, eh? A
Could be worse, spent a whole day and two cans of plus gas getting an zorst system off just so I could check the gauze filter, and it was spotless !! Had to be done of course, but a bit frustrating. ( Cagiva 'Fant, been stood three years)
Worth checking the guides as well. They have a habit of splitting the nose where it protrudes into the inlet/exhaust tracts when the valve hits. Doesn't look to have hit that hard, but worth making sure the rod feels ok on the crank as well as they can flat the shells.
@Nelly: Indeed, it was not a severe collision, as it was low gear and road speed, and I got it clutched immediately. Good point on the shells though, will check the rod on the crank. A
