Alright so I've seen Jb weld used to fix holes in pistons before, I've also seen it used to fill gaps in the cylinder wall. Than I began to think what if you used Jb weld to create a dome on the piston only about a mm or so high. Could this be done if the jb weld was made sure to be uniform all around and still have the valve seats in the piston? Just wondering because I have an Atv and the compression ratio is only 7.6:1 and well I'd like to have it a little higher.

 

what kind of atv is it. what engine.

 

200 cc honda 4-stroke.... It's surprisingly quick as it stands but as with everything you always want more. I have a few spare engines so if this seems feasible I may try it out on one of them and hopefully I will get a deacent amount of time on it.

If it doesnt seem feasible I may still do it anyways lol get 15 minutes of fun....

 

yeah it works just fine. i have jb welded cylinders and a nice size dome i have been runing 12.5:1 compression for almost 3 months now.

 

excellant what kind of prep work did you do to the piston and what kind of finishing did you do to the jb weld... any tips?

 

no ------- way, the jb weld doesnt melt? if you do this you better ------- clay it to make sure it clears

Do atv motors not run nearly as hot?

 

id think it would melt also, i used it on a radiator preped correctly and it melted off . just go bigger displacement.

 

well i've seen it used to fix holes in pistons and it actually stood up to the abuse. I would guess it would work.... hmm I hope so

 

no way this would work. The jb weld will melt right off. I tried to use jb weld on my friend oil feedline on his turbo once and that ---- melted off into a bubbly mess of liquid in about 5 minutes lol.

 

I don't think you did. It is not possible. maybe some *** hole told you they jb welded their pistons, but they were ------- with you. this is todays dose of reallity