I never heard of a piston breaking without something breaking it. THe piston doesn't touch anything unless the rod or wrist pin breaks. I suppose if the timing where way off and very lean and That K&N filter wore out the rings it could hit the cylinder wall but thats the only way. If I were the dealer I would tell him too bad hit the road and next time leave the motor alone and it will run forever.

If anyone is giving out false information it is you guys. Telling people it's okay to mod and engine blow it up then go to the dealer and cry till the cops come hoping they will pay to fix it. Your always saying it's okay to run K&n filters when everyone knows it's not okay in dusty conditions .Think about what I just said.

CYA

 

More likely that the rings were installed improperly or there was a flaw. If the mechanic had noticed scarring or dirt in the oil, don't you think he might of mentioned that? And what's with the timing or lean condition? If it was the cam, it would have most likely been damage to the rockers or chain and if it was jetting it would have burned a hole through the top of the piston. Give it up kid! Maybe you can sign up for shop if you manage to make it to high school. [img]i/expressions/face-icon-small-confused.gif[/img]

 

Don't call me a kid I'm 30. As for the shop class I'm sure your learning alot but your not that smart about motors. Can someone please show this guy he's wrong. Maybe you will learn more in the next chapter of shop class? Can you post me a pic of a blown skirt? WTF is that anyway I have never heard of it. I'm telling you it's not a defect. His bike is cammed or jetted wrong and it fried the engine. I would be willing to bet anything that it broke pretty soon after driving through cold water while the engine was hot. That excess heat he was making and the sudden cool down from a stream warped the head or block.

I'm finished with this post. I don't care anyway and I'm not going to reply no matter how much I want to say.

 

If you dont know what it is how do you know it cant happen...he said nothing about a warped head or block but i am sure the mechanic is wrong because you certainly can never be.

 

Ok Razor, don't respond. That's a good thing. That way there won't be anymore misinformation spewing from your post.
So, according to you, first it was caused by the "mods he did and a k&n filter" that broke the wrist pin, as opposed to what the mechanic said. Now, according to you, it was caused by riding through cold water and with all the excess heat caused by his mods, the cold water warped his head or block. WOW, what ignorance! Gee, I bet that happens ALL the time!
I have friends that ride 440ex's and they have never blown. They also ride through cold creek water! Imagine that?
You have NEVER heard of an piston skirt breaking? Never? You don't get around much.
You say you're thirty and that may be true. But age doesn't mean you know anything about engines. You don't automatically get smarter as you get older, you need to choose to learn.

And remember, keep your ride stock, if you have one, or it will surely blow at the first creek (or k&n filter) you come across.