AdrenalineJunky Posted July 24, 2010 Report Share Posted July 24, 2010 Would it be alright to clean the carbon off top of pistons using a right angle grinder and a 3M scotch brite pad, say one of the fine discs? Quote Link to comment Share on other sites More sharing options...
Larry's Shee Posted July 24, 2010 Report Share Posted July 24, 2010 As long as you don't get to aggresive with it. Especially if you need to see the # ontop of piston when done. I do know that Sea Foam will soften or disolve carbon. Some carb cleaners may also help. Quote Link to comment Share on other sites More sharing options...
GrMeyer Posted July 24, 2010 Report Share Posted July 24, 2010 Another note if your not taking the pistons out of the jug is to put some oil on the top end so that it leaks down the side of the walls and gets in the piston rings. This way you will not have a dry start up on the rings from being washed down with a cleaner. Quote Link to comment Share on other sites More sharing options...
AdrenalineJunky Posted July 24, 2010 Author Report Share Posted July 24, 2010 Pistons are out of the jugs. Thx gentlemen. Quote Link to comment Share on other sites More sharing options...
toytech Posted July 24, 2010 Report Share Posted July 24, 2010 Pistons are out of the jugs. Thx gentlemen. put them in some atf that will soften the carbon Quote Link to comment Share on other sites More sharing options...
99bansheeworked Posted July 25, 2010 Report Share Posted July 25, 2010 put them in some atf that will soften the carbon ya mine say 50mm is that stock i use carb clearner and it worked Quote Link to comment Share on other sites More sharing options...
mopar1rules Posted July 26, 2010 Report Share Posted July 26, 2010 64mm is stock piston size. what you are reading, is .50mm, which means you have a .50mm overbore, which is also the same as a .020" overbore. your current piston size is 64.50mm. hope this helps. Quote Link to comment Share on other sites More sharing options...
99bansheeworked Posted July 26, 2010 Report Share Posted July 26, 2010 64mm is stock piston size. what you are reading, is .50mm, which means you have a .50mm overbore, which is also the same as a .020" overbore. your current piston size is 64.50mm. hope this helps. wait its teh same how is that .50 and 0.20 are the same so my piston was bored out then Quote Link to comment Share on other sites More sharing options...
fastquad02blaster Posted July 26, 2010 Report Share Posted July 26, 2010 wait its teh same how is that .50 and 0.20 are the same so my piston was bored out then Sounds like it. Quote Link to comment Share on other sites More sharing options...
bansheesandrider Posted July 26, 2010 Report Share Posted July 26, 2010 wait its teh same how is that .50 and 0.20 are the same so my piston was bored out then ,50mm and .020" are the same dimension, one is expressed in the metric system and one is expressed in the American Standards system. Also, your PISTON is not bored out, it is your CYLINDER that is bored out. Quote Link to comment Share on other sites More sharing options...
99bansheeworked Posted July 27, 2010 Report Share Posted July 27, 2010 so i need to get the same pistons then ok .50mm so it be 64.50 ok thanks Quote Link to comment Share on other sites More sharing options...
Jereme6655 Posted July 27, 2010 Report Share Posted July 27, 2010 wait...STOP. first off....are you REBUILDING or just taking the engine apart for inspection and reassembling it? if your rebuilding it then you need to take it to a machine shop and have them mic it....they will tell you how much you need to have bored out of the cylinder to make it round and to make it fit a certain sized piston. they will also have to chamfer the cylinder ports so the rings don't get destroyed. When they measure it they can tell you what sized piston to order.....be smart and order wiesco pistons....then take them the pistons and they will measure the piston then bore the cylinder to match it. if you just go and buy 64.50mm pistons they will not work if your old pisons were 64.00mm pistons! Quote Link to comment Share on other sites More sharing options...
banshee67 Posted July 27, 2010 Report Share Posted July 27, 2010 wait...STOP. first off....are you REBUILDING or just taking the engine apart for inspection and reassembling it? if your rebuilding it then you need to take it to a machine shop and have them mic it....they will tell you how much you need to have bored out of the cylinder to make it round and to make it fit a certain sized piston. they will also have to chamfer the cylinder ports so the rings don't get destroyed. When they measure it they can tell you what sized piston to order.....be smart and order wiesco pistons....then take them the pistons and they will measure the piston then bore the cylinder to match it. if you just go and buy 64.50mm pistons they will not work if your old pisons were 64.00mm pistons! basically your bore fits your pistons you dont buy a piston before your bore Quote Link to comment Share on other sites More sharing options...
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