hollisatp Posted February 12, 2008 Report Share Posted February 12, 2008 Hey all.. I just rebuilt my motor and wanted to know if I can check the compression now or if the rings have to seat before I can check it?? Will the comp go up or down? Quote Link to comment Share on other sites More sharing options...
Wildcardracing Posted February 12, 2008 Report Share Posted February 12, 2008 Hey all.. I just rebuilt my motor and wanted to know if I can check the compression now or if the rings have to seat before I can check it?? Will the comp go up or down? The compression should improve after the engine is broke in and the rings have seated. Quote Link to comment Share on other sites More sharing options...
Wildcardracing Posted February 12, 2008 Report Share Posted February 12, 2008 The compression should improve after the engine is broke in and the rings have seated. Also, make sure you hold the throttle wide open while you kick it over. Quote Link to comment Share on other sites More sharing options...
hollisatp Posted February 13, 2008 Author Report Share Posted February 13, 2008 ?? why would I want to do that?? Quote Link to comment Share on other sites More sharing options...
yamaha04 Posted February 13, 2008 Report Share Posted February 13, 2008 im not 100% sure on why you need to hold the throttle but its just something you have to do lol. turn your gass of and i take both plugs out. makes it easyer to kick over. btw kick until your guage doesnt move any higher. Quote Link to comment Share on other sites More sharing options...
gregrob Posted February 13, 2008 Report Share Posted February 13, 2008 im not 100% sure on why you need to hold the throttle but its just something you have to do lol. turn your gass of and i take both plugs out. makes it easyer to kick over. btw kick until your guage doesnt move any higher. I would guess you need to hold the throttle open so the cyls can suck in enough air to fill them, thus building the correct amount of pressure. If they couldn't suck in all the air they wanted (slides closed) you'd get a skewed (low) compression reading. Quote Link to comment Share on other sites More sharing options...
hollisatp Posted February 14, 2008 Author Report Share Posted February 14, 2008 cool thanks!! Quote Link to comment Share on other sites More sharing options...
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