thetorches
Member
What should the compression be for an 02 viper. Tried doing a search, but nothing came up. Thought I had seen it on here before. Thanks.
Here's a good thread on it. http://www.totallyamaha.net/forums/showthread.php/83556-viper-compression-check
cant really give you a concrete number because that depends on the compression guage you use, the longer the hose the lower the reading, but for average comparison you should be around 120 for the mag and center and 110 for the pto........ again,,, the numbers can vary due to the gauge by as much as 10 easily. your looking to see if the pto and center the same and the pto should be just bit lower due to the head design.