Ultra cylinder base gasket
A friend of mine owns a 1996 670 Polaris Ultra. Heres the problem; at the end of last season he had a ring break and tear up one of his cylinders. Since Wiseco provided the rings and pistons they paid for the new parts and machine work on the cylinder. He has put on a few hundred mile since then but has recently experienced a blown base gasket related to that particular cylinder. He has replaced the gasket twice and it has blown out at 150 miles and 40 miles. The matting surface look good, no knicks or blemishes. torque 25 ft-lbs. Does anyone have any input as to why this is happining.