Decompression cam question

1 reply to this topic
  • jlemery

Posted November 06, 2007 - 09:49 AM


I am looking for auto decompression on my 02 426 and am wondering what the best way to go is. Do I (1) buy an aftermarket exhaust cam (2) but aftermarket exhaust and intake cams or (3) buy the 03 exhaust cam. I am not overly concerned with performance gains I just want the decomp feature.

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  • grayracer513

Posted November 06, 2007 - 10:51 AM


Using the OEM 450 cam is the least expensive route, and many feel that the Yamaha cam, used with the original 426 intake, gives better performance over a wider range than using an aftermarket exhaust cam by itself. The downside: very slightly complicated, non-standard timing process.

Aftermarket cams install and time by the marks exactly as do the stock cams, but they seem to work best in pairs, and they cost more.

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