jimbob Posted January 17, 2009 Report Share Posted January 17, 2009 any one had it done? im thinking of having mine done and would just like som opinions first. ive heard good and bad things about it. good being better quicker more responsive accelleration and bad being loss of momentun or "rolling inertia" i ride for fun but do like to ride hard mostly trail/moto x. mods are listed in my sig also thinking of having .030 taken off the stock head. i think cool head would be a bit of over kill here as we dont need to worry about overheating as its usually freezing cold and the shee isnt hammered all the time only really 10-15 minuters bursts cheers all Quote Link to comment Share on other sites More sharing options...
fastrthnu Posted January 17, 2009 Report Share Posted January 17, 2009 any one had it done? im thinking of having mine done and would just like som opinions first. ive heard good and bad things about it. good being better quicker more responsive accelleration and bad being loss of momentun or "rolling inertia" i ride for fun but do like to ride hard mostly trail/moto x. mods are listed in my sig also thinking of having .030 taken off the stock head. i think cool head would be a bit of over kill here as we dont need to worry about overheating as its usually freezing cold and the shee isnt hammered all the time only really 10-15 minuters bursts cheers all you have the flywheel lightning about right. I have mine done. Shaving the head for compression and advancing your timing about +4-5 degrees are good cheap mods. Quote Link to comment Share on other sites More sharing options...
deckheight Posted January 18, 2009 Report Share Posted January 18, 2009 Lightened flywheel = Barely noticable, but it is noticable. Lost inertia is not even a concern. Cutting an OEM head for 92 or 93 Pump octane number fuel (PON) = Defenitely noticable. See if whoever cuts the flywheel will static balance it also and pay the x-tra $$$ to have the OEM head re-chambered while they are at it. You can't just face .030" off the head and call it good... You will end up with something like .028" squish clearance and your MSV will be through the roof, if the piston doesn't go through it first... Quote Link to comment Share on other sites More sharing options...
sheerider1026 Posted January 18, 2009 Report Share Posted January 18, 2009 what is MSV?? Quote Link to comment Share on other sites More sharing options...
Wildcardracing Posted January 18, 2009 Report Share Posted January 18, 2009 MSV=Mean Squish Velocity, or the speed at which your intake charge enters your cylinders and is directed toward the center of the combustion chamber. Too high of MSV and you will detonate your fuel. Quote Link to comment Share on other sites More sharing options...
deckheight Posted January 18, 2009 Report Share Posted January 18, 2009 Just to add to what has already been said... Maximum squish velocity or "MSV" is an indicator of combustion chamber turbulance and is measured in meters per second of travel. Quote Link to comment Share on other sites More sharing options...
CBAIER1206 Posted January 18, 2009 Report Share Posted January 18, 2009 How much do you weigh? I've heard that lightened flywheels are best for those riders under 200lbs. Otherwise there's no real benefit. Quote Link to comment Share on other sites More sharing options...
jimbob Posted January 18, 2009 Author Report Share Posted January 18, 2009 190 Quote Link to comment Share on other sites More sharing options...
CBAIER1206 Posted January 19, 2009 Report Share Posted January 19, 2009 Then you could prolly do it, it won't really add any power but should make your shee feel a lot more "snappy" when you hit the gas. Quote Link to comment Share on other sites More sharing options...
jimbob Posted January 19, 2009 Author Report Share Posted January 19, 2009 good stuff. ile get on to my engine guy then, thanks for the input guys, :biggrin: Quote Link to comment Share on other sites More sharing options...
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