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HCS Snowmobile Forums > Snowmobile Forums > Arctic Cat General Discussion > ZR/ZL forum

monster7
Who built their own 800cc big bore engine?
91B x 76S x 8100RPM
i built a 790 twin out of a 700 twin years ago.
not too hard to do.

back then no 1 had a 800 twin,so the pipes were
the real pain in the arse.
snow800
All the aftermarket F8 kits run Polaris 800 twin pistons.
I have never done one, you may have to trim the piston skirts ??
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