rotn50
Master Spanner Spinning Moderator
Hi guys at work today i had to pull this engine out that had a prob, the prob was not due to gearbox failure, more so it was maintenance that didnt happen basicly, this engine is a 160yx 4V and for a china 4valve apart from the rockers tapping loudly they go quite hard and sound great, the prob was an extremely loose KMC china chain that was so loose it bunched at the front sprocket and got caught and at hi revs the gearbox popped the casing and tryed to exit the case. Ill grab some more picks when i dismantle the bottom end.