Power_Man Posted May 31, 2013 Report Share Posted May 31, 2013 How does this look, or can your tell anything by looking at them? Quote Link to comment Share on other sites More sharing options...
RadarRacing Posted May 31, 2013 Report Share Posted May 31, 2013 The carbon on pistons tells us alot about heat and jetting. That looks quite lean and hot. What you would like to see is whats called "piston wash" where fresh fuel will wash the tops of the pistons by the transfer ports and wash the carbon off out to about half way to the middle of the bore. The pistons would be best to have a fairly clean area by the transfers and be a little browner or blacker towards the center of the piston. Quote Link to comment Share on other sites More sharing options...
RadarRacing Posted May 31, 2013 Report Share Posted May 31, 2013 As stated in this thread it is possible to have too much fuel and oil not being burned and just sticking to the pistons. It depends on oil too. Its up to you to tune and decide which it is. http://bansheehq.com/forums/index.php?showtopic=130836 Quote Link to comment Share on other sites More sharing options...
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