Have a 77 mm bore Pro-X 330 that has been running for 4-5 years and is probably due for a piston. Motor is apart for trans issues so going through the motor.
77.5 mm is the final bore on the 330, sleeve seems a bit thin at 77.5 but there's a piston size for it so going to do it.
Has anyone ever gone out that far bore wise and had problems?
anyone's experience would be great.
