Chip M Posted March 4, 2012 Report Posted March 4, 2012 I picked up a 96 Banshee that had not run for a couple of years. I took it apart to put new gaskets lower end seals and a fresh top end. There are not many mods on it, pipes, reed valve system and a coolhead. I had some cold start problems after putting it back together and found stock jets still being used. I have not gotten the new pilot jets yet, but I started out with 300's in the main. I was sure that stock would be too lean but I am not very knowledgeable about jetting. Studying up on it now. I have some pictures of the left piston I took out and would like you to tell me if the damage can be read to give me some idea of what caused it. The right piston looked in fine shape, as a matter of fact, it looked to me like that set of pistons had not been in very long. (except for the damage of course !). The previous owner told me about a exhaust leak on the left side.Damage is to the front side of the piston. Could there be that much melt down from an exhaust leak. Any ideas would help me to not do this to my new set of pistons. Thanks guys , you have been great help to me. Quote
Chip M Posted March 4, 2012 Author Report Posted March 4, 2012 I picked up a 96 Banshee that had not run for a couple of years. I took it apart to put new gaskets lower end seals and a fresh top end. There are not many mods on it, pipes, reed valve system and a coolhead. I had some cold start problems after putting it back together and found stock jets still being used. I have not gotten the new pilot jets yet, but I started out with 300's in the main. I was sure that stock would be too lean but I am not very knowledgeable about jetting. Studying up on it now. I have some pictures of the left piston I took out and would like you to tell me if the damage can be read to give me some idea of what caused it. The right piston looked in fine shape, as a matter of fact, it looked to me like that set of pistons had not been in very long. (except for the damage of course !). The previous owner told me about a exhaust leak on the left side.Damage is to the front side of the piston. Could there be that much melt down from an exhaust leak. Any ideas would help me to not do this to my new set of pistons. Thanks guys , you have been great help to me. Quote
coryv4 Posted March 4, 2012 Report Posted March 4, 2012 seems like you are running lean what is your jetting mods and temp and elavation. Quote
Chip M Posted March 4, 2012 Author Report Posted March 4, 2012 seems like you are running lean what is your jetting mods and temp and elavation. The pics are of the left piston I took out before I rebuilt it. I was just trying to get an idea what the guy before me did to it. Quote
Jereme6655 Posted March 4, 2012 Report Posted March 4, 2012 Appears to have been run a little lean. Looks like it almostunched through the crown of the piston there too cause of how long it was run lean.... Quote
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