Just a question, i used a .020 feeler gauge through the exhaust port and it seemed good, however i have .010 over pistons in it, would these raves be cut already allowing for such a situation. I pushed down on the valves and the feeler gauge slid out without hanging up from down pressure. Thanks jim
Very low quality. Sending mine back the same day i got them. The edges on all 4 of the rave valves are messed up. 2 have scratches. Poor manufacturing process with poor quality control. If you put these in your boat it's only a matter of time before one snaps or destroys your pistons and rings