Hmm...I've just started takin notice of people sayin their JE's are goin bad! Is this something I should worry about?! I just put my bike back together with a JE and now there's people havin probs? They never had probs before, why now?

 

I don't know man.......I'm pretty paranoid?
I had about 2 hours on mine right before I tore it back down for a head gasket......and she still looked brand new.......
I don't knwo what the future will hold for my craptor......we will see.......

 

I have gone thru one and my 2 buddies did also,mine and my other friend had a hole in the piston and the other had a bad wrist pin that broke..

I will be taking mine apart again to check out my piston ,i have had about 10 hours if that on this new piston..

 

From what I understand a couple of bad batches went out from JE. I am not sure a hole burnt in the center of the piston equates into a manufacturing defect...thats usually jetting. Folks, if you cannot trust JE, you cannot trust anyone making your pistons. My stockbore 10.75/1 has plenty of hours on it.

 

I must have got one of the bad batch ones because my jetting is spot on ...and i had plenty of hours on it also till it burned a hole...

me and wshrdskn had a hole in the exact same spot and we run diffrent jetting and jets..go figure..

 

The hole in raptor03s was not melted from a lean mixture. The piston cracked along the intake valve reliefs and developed a hole in the crack. Detonation was probably a contributing factor but a lean mixture was not. Off the top of my head I've heard of 4 with similar cracks a couple that have broke at the pin bosses and a wrist pin breaking, if I sit hear and think about it I'm sure I could remember some more.
Maybe there's a good explanation for all of these failures but I doubt it. I've lost faith in JE.

 

i hope its not an epidemic because i plan to get a 10.75:1 kit for the warrior eventually.

 

I didn't have a problem with my JE piston, but the JE WRIST PIN BROKE IN HALF!!! does jetting cause that???

 

I updated my pics, but they have to be approved first, pics of the wristpin are there as well.

 

I had a je piston crack a put a hole in the center. I called je and sent the piston back for inspection. They told me that it was caused by denotation. He said that it wasn't a manufacture problem. But, they sent me a new piston a week later. What I found was the wrist pin on the older pistons was 55mm long, the new ones are 64mm. Which tells me they had a problem with flex.