3yamis
New member
97 Vmax 600XT twin cylinder piston failures
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I have had two pistons fail in this sled due to the ring groove pin falling out and the ring turning and getting caught in the ex. port. It failed both times on the flywheel side. Once the original piston at 7000km and then now a wisco at 14000km. The clutch side has never failed; it does have a wisco as well. Yamaha has updated their piston and new it was a problem but I did not expect to have the same issue with wisco. Not sure what piston to use now; I do not want to buy another cylinder.
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I have had two pistons fail in this sled due to the ring groove pin falling out and the ring turning and getting caught in the ex. port. It failed both times on the flywheel side. Once the original piston at 7000km and then now a wisco at 14000km. The clutch side has never failed; it does have a wisco as well. Yamaha has updated their piston and new it was a problem but I did not expect to have the same issue with wisco. Not sure what piston to use now; I do not want to buy another cylinder.
daman
New member
posted in your other thread, try not to duble post..