E Erik1973 New Member Jul 24, 2022 #1 I have a 1995 Seadoo Spx with a 657x motor. I want to put new rings in it and I can’t find one rings for it. It has Oem Seadoo pistons marked 78.94. Just wanted to know if that’s the same as 1.00mm over.
I have a 1995 Seadoo Spx with a 657x motor. I want to put new rings in it and I can’t find one rings for it. It has Oem Seadoo pistons marked 78.94. Just wanted to know if that’s the same as 1.00mm over.
mikidymac Moderator Staff member Moderator Jul 24, 2022 #3 There’s no reason to put new rings in these. If the pistons and cylinders are worn then the only fix is bore oversized with new oversized pistons and rings.
There’s no reason to put new rings in these. If the pistons and cylinders are worn then the only fix is bore oversized with new oversized pistons and rings.
