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Can you tell me what the compression ratio should be for the twin 135 HP 2-stroke engines in a 1999 Yamaha LS-2000 jet boat?
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Compression
On a compresion gauge can you give me the range it should read in PSI? Second question, the middle piston had damage caused by the oil line popping off, it ran on straight gas. Anyway the two outside two are fine. Since I have to replace the piston & rings on the middel cylinder, should I re-ring the two outside cylinders? They have less than 200 hours on them?
Thanks
MMComment
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Compression on all cylinders should even and not over 10 percent difference between cylinders. If the others cylinders are going to be honed then rings will have to be replaced.Comment
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Compression
Can you tell me what the comprssion (in PSI) should be for a 135 HP 2-stroke engine in a 1999 Yamaha LS-2000 jet boat if the engine was brand new?
MMComment
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