miami350 Posted January 19, 2013 Report Share Posted January 19, 2013 I bought a banshee like 2 weeks ago from the auction so I was runing it on 93 for about 3min till I heard a boom so I took the topend apart and found a hole on top of right piston. So I took the whole motor apart to clean all the shaving that the piston drop so while the motor was a part I bought new main seal. And bought 2 new pistons and build it back. So now I want to know if its ok to run av gas the bike has some 20cc domes compression at 155 psi and jetting at 270 im at sea level bike dose not have timming plat.. Quote Link to comment Share on other sites More sharing options...
Sandking Posted January 19, 2013 Report Share Posted January 19, 2013 270s are small. You were probably running lean. Av gas is good but do a good plug chop first. Quote Link to comment Share on other sites More sharing options...
Finch Posted January 19, 2013 Report Share Posted January 19, 2013 premium fuel and make sure your not to lean on your jetting my stockers i would run 310-320 at sea level with pipes and pods Quote Link to comment Share on other sites More sharing options...
miami350 Posted January 20, 2013 Author Report Share Posted January 20, 2013 Started motor today and the same side the plug look Dry dark gray what could that be????? jets at 330 now Quote Link to comment Share on other sites More sharing options...
Starwriter Posted January 20, 2013 Report Share Posted January 20, 2013 Started motor today and the same side the plug look Dry dark gray what could that be????? jets at 330 now An air leak. Do a leakdown test before you blow it up again. Quote Link to comment Share on other sites More sharing options...
bansheefromhell Posted January 20, 2013 Report Share Posted January 20, 2013 run diesel, it can handle a lot of compression Quote Link to comment Share on other sites More sharing options...
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