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Curious if anyone has installed a 12:1 piston in the new 700 motor yet. I didn't find much via a search, so here I am.
If so, what are your fuel requirements?
Thanks
I've got an 11:1 for my 2014 that I'm getting ready to install. Mine is good to run on pump fuel. As far as I know, anything in the 12 range will require mixed or race fuel. I dont have an octane range for ya but it'll be higher than pump fuel.
 

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Discussion Starter · #3 ·
After an exhaustive search, no one makes a big bore kit for the 16+ grizzlies. Called Trinity Racing, who've sold their castings to millennium technologies. No luck. Maybe I should just put a 12:1 piston in and call it a day.
 

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After an exhaustive search, no one makes a big bore kit for the 16+ grizzlies. Called Trinity Racing, who've sold their castings to millennium technologies. No luck. Maybe I should just put a 12:1 piston in and call it a day.
It might just take a bit longer for aftermarket support for those newer Grizz, especially since it's a new motor. If there's no kit yet, I'd do a higher compression piston and start there. You can always upgrade to a BBK later if you want more and something becomes available :) that's what I'm going to do.
 

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I think I'll do as spheno says and run the 12:1 wiseco for now. My old 660/686 grizzly became a beast after installing the high compression slug.
Good luck. Let us know how it goes.
 
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