wvbansheeboy Posted November 29, 2009 Report Posted November 29, 2009 hey guys jus trying to find out if any one has every milled a head 40 thousands and if so what compression was it running? and i knoe i have to do a squish test 1st and foremost.. thanks russ Quote
T_Shee Posted November 29, 2009 Report Posted November 29, 2009 at .040 your squish is prolly gonna be too tight. mine is about .030" with a .030" milled head and that is too tight. that is on stock stroke stock head with wiseco pistons Quote
AKheathen Posted November 29, 2009 Report Posted November 29, 2009 yah, .030" is the point where you need t rechamber, or you can get piston slap and be more prone to deto. oh, and shrink your damn signiature already! Quote
wvbansheeboy Posted November 29, 2009 Author Report Posted November 29, 2009 yah, .030" is the point where you need t rechamber, or you can get piston slap and be more prone to deto. oh, and shrink your damn signiature already! im gona try it.. and i resized my sig on photo buckett hope it works Quote
AKheathen Posted November 30, 2009 Report Posted November 30, 2009 it worked....it's ok to go a little bigger, likw whatever x 200 Quote
jbooker82 Posted November 30, 2009 Report Posted November 30, 2009 You could alway send it to Brandon at Mull Engineering. It is a little more $$$ than the standard head shave job but it is doing it right by rechambering and re shaping the domes. http://www.mullengineering.com/sc/store.php/products/yamaha-banshee-yfz-rz-head-mod-billet-cut-modify-machine-squish-dome-plug-heat-race-drag-online-modify-modification Quote
AKheathen Posted November 30, 2009 Report Posted November 30, 2009 i think he does head exchange, too, so there is no waiting.... Quote
blowit Posted November 30, 2009 Report Posted November 30, 2009 im gona try it.. and i resized my sig on photo buckett hope it works Simply shaving the head instead of properly rechambering will leave horsepower and efficiency on the table. We have several guys that have went from a shaved head to ours with great results. I will admit that it can be tough for us to schedule in just 1 head at times but we have cut hundreds of heads over the years and not one dissatisfied customer. Just a thought.. Mull Engineering Quote
mopar1rules Posted November 30, 2009 Report Posted November 30, 2009 at .040 your squish is prolly gonna be too tight. mine is about .030" with a .030" milled head and that is too tight. that is on stock stroke stock head with wiseco pistons i cut .030" off my head, and i have .050" squish. i have pro-x pistons and moose gaskets all around. Quote
wvbansheeboy Posted November 30, 2009 Author Report Posted November 30, 2009 i cut .030" off my head, and i have .050" squish. i have pro-x pistons and moose gaskets all around. what compression are u pumping out? at 30 thousands shaved? Quote
mopar1rules Posted December 1, 2009 Report Posted December 1, 2009 my cylinders are ported, so on my gauge i'm around 135-138 lbs of cranking compression. running compression will be higher. Quote
wvbansheeboy Posted December 1, 2009 Author Report Posted December 1, 2009 my cylinders are ported, so on my gauge i'm around 135-138 lbs of cranking compression. running compression will be higher. thanks for the info... the guy thats doin my porting is send me a thicker base gasket then stock to help with my squish... im hoping to be around 150 psi cranking.. so i can remain on pump fuel Quote
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