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Junior Member
I am rebuilding my daughters DRR DRX90. This is a 2006 model. I installed new crank bearings and seals, new cylinder, piston, rings, and gaskets. Also I picked up a high compression head. My question is, with this all togethor I have a compression reading of 210 psi. Will this motor stay togethor with a 50/50 mix of 110 race fuel and 93 octane? My premix is 32:1 with Klotz Supertechniplate. I just want to be sure the compression won't be too high. Thanks for your help.
2005 Suzuki Z-400
2004 Yamaha Wolverine
2006 DRR DRX 90
2004 Kymco Mongoose 90
Quad Dad
you need to check the squish. at 200 or over you are asking for crank bearing failure.
Mark
" A good friend will bail you out of jail but a true friend will be sitting beside you saying.... Dang that was fun"
Mark
Bubba ( son )
2005 YFZ450, 08 motor,Bike cam, Laeger Plus 2 a-arms, Elka shocks, GYTR Exhaust, Holeshots on Baja rims, AC Pro Pegs, G- Force axle
2009 Sponsor: Asv, SixSixOne. Oneal Racing, Houser Racing, GT Thunder, Nacs Racing, Elka
Junior Member
Mark, thanks you for the reply. I think I am going to try to stay below 180.
2005 Suzuki Z-400
2004 Yamaha Wolverine
2006 DRR DRX 90
2004 Kymco Mongoose 90
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