Wolfshoes
Member
My two motorbikes stopped running within a week of each other from engine problems. On engine removal and examination it appeared the vibration reducing lighter thinner titanium piston supporting wrist pins have crushed and one has broken. The engines were running with stock compression and heads.
Pistons, piston rings and jugs are also broken but I suspect as a effect rather than the cause of the wrist pins being crushed. This crushing created enough of a distortion that it was probably the cause of a gradual loss of engine power and erratic performance over the 3 or 4 summers the engines were used. When this breakage happens, after many hours of engine use, whether or not it is best to replace the engine and not repair, I don't know. The wrist pins were after market parts from Juice. One was installed in a Grubee, the other in a Gasbike'
Pistons, piston rings and jugs are also broken but I suspect as a effect rather than the cause of the wrist pins being crushed. This crushing created enough of a distortion that it was probably the cause of a gradual loss of engine power and erratic performance over the 3 or 4 summers the engines were used. When this breakage happens, after many hours of engine use, whether or not it is best to replace the engine and not repair, I don't know. The wrist pins were after market parts from Juice. One was installed in a Grubee, the other in a Gasbike'