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By luck I have got the money quicker than I thought for a replacement piston. Well to keep everything as is setup wise requires racing fuel, which I can get at multiple places around me. Well now since that I want a little input from our great members. Do you guys think I should stock with the...

Me and Kyle have been talking about what could have been a big contributor to the problem though. He's thinking the timing compounded with the compression and being just slightly lean lead to it. It's a real big circle track around here and there is already 1 station locally that carries race...

Hmm, just got thinking. Since to run as is now I need race fuel, who thinks I should just run a 12:1 piston?

Ya me to, I didnt discover mine till a couple days before my ill fated memorial weekend. No time to get a cover, so I rednecked it to get by!! LOL

Ya now the fun decisions. It will end up being how I come up with the money for the new piston. Though who knows I may still need slightly higher octane to avoid it happening again. Especially considering I dont know if the heads been surfaced before me. My machinist had to take .015 off to...

Yes they have 2 pickups, but they are mounted both in the same place as the later singles. I had the old 98 and my current motor (that's in the 99) that is an 87 at the same time. They are identical. Sometimes the way I built Jar-Jar comes in handy for knowing things!!! Lol And I need to get a...

I love the sound of my yoshi. Here's a video of it running.

They are all the same.

Well JE got back to me. They say classic case of detonation. So I'm on the hook like I thought for a piston and to keep where I was at race fuel.

Cheapest on ebay Ive seen is 166 and the way its advertised it may be the non-programmable. Direct from dynatek over 200. As for Bronc's I cant believe no one had jumped on it right away. The dynatek programmable is the only aftermarket cdi thats worth a damn for a warrior. All the others are...

Well finally got the JE site to load tonight, got the email address and sent them an email with a quick explanation of why I was emailing and the pic of the piston. We'll see what they say! Got my fingers crossed that they agree, Im finding it quite hard at the moment to get the $$ together for...

Will trade for a 366(85mm) piston also!!

On the aftermarket side Im not sure, Ive never seen it published what dynatek's timing curves are. Id have to do a little looking to find the stock stuff

Well for that price Im asking for a closer pic of it. I aint made of money pat!!! LOL

do you think the timing from the dynatek at high RPMs could have caused it?

Yes Pat I figured as much, but Ive found good case that are a good price that say 2x4. Catch is they still have the casting for the front, I just cant tell if its cast shut on them or something like a freeze plug

Well got the head off, as far as I can tell the only thing damaged is the piston.

Picked this up last year when I rebuilt the top end, only a few hours on it. Works great, looks great!! Motivated to sell $175 shipped

At this point Im even willing to pick up a smaller bore piston and jug, preferably no less than 84mm/.040

well that was an interesting 5 days to say the least!!! Casualty list: Jar-Jar: hole in piston/ only one that truly needed towed to camp Can Am 1000 Commander: busted LF axle inside diff/ only one with Warranty left Polaris Sportsman 500: burned belt trying to help Can Am out of sand/mud hole...