Cleaning carbon off pistons!

[AdrenalineJunky]

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?

[Larry's Shee]

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.

[GrMeyer]

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.

[AdrenalineJunky]

Pistons are out of the jugs. Thx gentlemen.

[toytech]

Pistons are out of the jugs. Thx gentlemen.

 

put them in some atf that will soften the carbon

[99bansheeworked]

put them in some atf that will soften the carbon

 

ya mine say 50mm is that stock i use carb clearner and it worked

[mopar1rules]

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.

[99bansheeworked]

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

[fastquad02blaster]

wait its teh same how is that .50 and 0.20 are the same so my piston was bored out then

Sounds like it.

[bansheesandrider]

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.

[99bansheeworked]

so i need to get the same pistons then ok .50mm so it be 64.50 ok thanks

[Jereme6655]

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!

[banshee67]

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