So its time I utilize my resources, I have a pug 103 that I just burned a pea size hole through the piston on. The timing is very mild, and the hole is not in the crown center of the piston, but near the bottom of the top of the piston right by the decomp plunger. So here is my question? Can an air leak in you head eat a hole through your piston? I dont think its timing, I have it set at stock at this point. and go!
I have considered that the hard dense carbon that is like coal coke on the top of a piston could get a burn going on and overheat that part of the crown helping to cause a cave in.
very frustrating, naz has a head off his pre water cooled pug that he said I can borrow to test my air leak theory. I have a spare piston cuz I am a parts pack rat, but i would like to not melt holes thought pistons preferably. I mean the speed is totally worth it, don't get me wrong, I just don't think benji enjoys separating kits for me!
~turd
we had that EXACT same thing happen here on a TSM.
we concluded that the piston was super mega hot from running insane leak due to a confirmed airleak, but the quality oil wasnt letting the piston stick, or it just wasnt hot enough. hit the decomp to kill or start the bike and that blast of cold air nuked the piston.
we welded the hole closed and it was fine 8===>
interesting, I had a similar issue of just loosing all my compression out the decomp on a malossi LC. I just welding the head shut and that took care of issue.
-naz
dah leak = lean
hey ,naz, I will try your head.......haha anyway I will try it out and maybe we weld up the one I got for shits and giggles
Hmmm, wonder if anyone ever nuked a piston like that with the decomp when trying to get a really solid plug chop?
Josh, are you sure it's not just punishment from Jesus due to the fact that you haven't been down here to hang out in almost a year?
yeah, that was next on my list of guesses for sure zacky, man I double fail!
Might as well try to weld the hole in the piston while you are at it
if it's a stock piston, I have an extra one too Josh
nope 70cc malossi piston, thanks though I an, your a dear, And I I might see if te hole can be welded shut for shits and giggles
What did your plug look like?
you can JB weld a hole in a piston i have done it many times it works great
That is an amazing statement Jason. Was this on a stock bike and of what type? I am fascinated because with cooling from underneath the crown and a good deposit of carbon on top to insulate this might be possible
it was a stock za50
its amazing what JBweld can fix
killing and starting your bike does not blow holes in pistons. deck your head, pug heads are OFTEN warped. seal that bitch up tight!!!
I think they were saying that their decomps were not sealing right......
yeah the head was smoothed out ..
-naz
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