Bansheeman1121 Posted July 20, 2004 Report Share Posted July 20, 2004 I took off the head and 1 piston is just burnt right up and has a hole right through it , its bone dry in the cylinder, the other is perfect lots of oil, pistons perfect.. So what should I do?? Why would one cylinder be bone dry and seized up with a hole through the piston while the other cylinder is perfect?? Ill get some pics up later but what do i need to order and what needs to be done?? Thanx Quote Link to comment Share on other sites More sharing options...
kenr74 Posted July 20, 2004 Report Share Posted July 20, 2004 I'm no expert but I would guess you have an airleak on the burned side somewhere since the other side looks good. Quote Link to comment Share on other sites More sharing options...
Bansheeman1121 Posted July 20, 2004 Author Report Share Posted July 20, 2004 Thanx man keep the replys comin i gotta fix this piece quick even tho i dont have any money i migth have to rob duncan and trinitys stores those basterds are holdin out on all of us.. Quote Link to comment Share on other sites More sharing options...
SDD Posted July 20, 2004 Report Share Posted July 20, 2004 Read this http://www.poetonaptec.co.uk/technica/pistonguide.htm Holes in the center of the piston normally indicates detonation problems. Quote Link to comment Share on other sites More sharing options...
Bansheeman1121 Posted July 20, 2004 Author Report Share Posted July 20, 2004 Hole is not in the center, if its any indication of any thing its near the exuaghst port. Its prety burnt up the rings are pretty much fried to dust, but remeber only on one side the other side will start right up and run also if its any indication the cylinder that fried is bone dry no oil in it its almost like theres an oil pump on it that failed to give oil to the cylinder but i dont no the hell so what do i gotta do, the sleeve dont feel to scrathced up.. Quote Link to comment Share on other sites More sharing options...
. Posted July 20, 2004 Report Share Posted July 20, 2004 you got an airleak on that piston side. It ran so hot that it was burning the oil off, thats why it looks so dry. I would check your intake between the reeds and carb and see if its got a crack in it. If it doesnt have a crack it was leaking air somewhere, chances are between the carb and intake piece, or where your reeds sit. Check everything out real well when you rebuild it and make sure you do it right. You dont need silicone or anything like that for the gaskets when you rebuild it. Get yourself some carb cleaner when you get it running and spray it around the carbs and intake and see if you have a leak anywhere. Quote Link to comment Share on other sites More sharing options...
pimp559 Posted July 20, 2004 Report Share Posted July 20, 2004 It could still be the mixing of the oils in the gas making one carb not work. No worky=no lube on the burnt up side. Quote Link to comment Share on other sites More sharing options...
Bansheeman1121 Posted July 20, 2004 Author Report Share Posted July 20, 2004 well after it 1st gave signs of seizin up i drained all the gas took off both carbs cleaned them with carb choke cleaner put them back on pured amsoil down the cylinders then mixed a nice 4 to 1 ratio of amsoil racing oil and took it out ran like a champ for a bit then i guess this junk happnd and left piston fried.. So would v force reeds do the trick?? Or what i did hear an air leak after it finaly seized up for good yesterday so ill have to have a look around.. Quote Link to comment Share on other sites More sharing options...
pimp559 Posted July 21, 2004 Report Share Posted July 21, 2004 It was the oil and the damage was already done. Its funny how they run awsome right before they blow, but thats the way it goes. Quote Link to comment Share on other sites More sharing options...
Bansheeman1121 Posted July 21, 2004 Author Report Share Posted July 21, 2004 Well i found a small crack in the little rubber part where the boost bottle connects on the side that had a melt down so as u guys were sayin that little thing could have caused my troubles.. So do i gotta over bore it, do i gotta replace 2 pistons or just the fried one, and theres tons of jnk melted to the domes should i have them polished or what.. Thanx for all the help i wanna get thing back out racin for the pink slips.. Quote Link to comment Share on other sites More sharing options...
sandman121383 Posted July 24, 2004 Report Share Posted July 24, 2004 great link SDD. nice source of info . made for some good reading. i'm sure lots of others guys loved what they saw too, even tho some of those pistons were in rough shape Quote Link to comment Share on other sites More sharing options...
sredish Posted July 24, 2004 Report Share Posted July 24, 2004 Sorry to hear about that man. Some times, when it's leaned out some, it will seem to actually run better than ever, but it's always too good to be true. I can tell when mine leans out because it will just feel different, in some situations, it will run really good and rev awesome, but one thing with a "good running" lean machine, it will be a little short on power, and it can be misleading, that's why plug readings are so very important. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.