goin to a larger bore size......

[beerock]

well due to a bad hone job my piston had blow by and never broke in correctly(and almost seized)-but it didnt.

it did break in, but the seize put minor scuffs in the piston and caused a break up at mid throttle that drove me crazy....

so now, im going to my 7th bore size (67.75mm over stock bore)

heres the formula:

how to figure bore size out:

divide piston size by 2 (67.75mm(my piston = 33.875mm)

then convert to centimeters(move the decimal point over a place) 3.385mm

multiply by stroke converted to centimeters (72mm= 7.2mm)

3.385mm x 7.2mm = 24.372mm x Pie(3.14) = 76.52808mm x 3.385(bore size = 259.0475508)

so im creepin up on 260cc :)

convert milimeters to inches divide milimeters by 25.4

convert thousanths to milimeters multiply by 25.4

[trx400ex]

to much math, you should get it NiCaSiled but i think its alot of $$

[beerock]

that math is very good to know though.......


ive been thinkin about nikasil for this cylinder, cuz I really do love it........

I can always get it resleeved....

i dont think i would get it nikasil coate dunless i could do it for dirt cheap..... i could prolly get a powervalve cylinder for the same price, maybe even less.....

[beerock]

;)