Recent content by sjmike

I was out riding the lake today and my sj died a few times while idling, then about 15 min later quit. When I would try to re start it, the motor sounded like it was timed wrong, it would fire but would not stay running. When I got back home I pulled the plugs, only one was sparking at first...

protec head question I will try a different gage, the only thing I have checked it against is a stock 650sx, which showed 150. thanks for the info

protec head question I have a protec head that has 37cc domes and it only runs 160lbs of compression, the site says it should be making 180. The cylinder is brand new ( resleeved ) with no port work, just wondering if anyone could tell me if this is common with these heads?