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Cannonball08
10-03-2002, 08:28 AM
How many CC's would it be if you bored a 440 .40 over?

RiPPiNiTuP7
10-03-2002, 08:37 AM
I believe it will be a true 445cc's.....but I am not 100% postive....

oynot400
10-03-2002, 10:23 AM
I lost the formual to figure it out. If I find it back I will post it. :D

Nausty
10-03-2002, 04:05 PM
I would think it would be pi(3.14) x diameter(i think thats what it is called, basicly the width of the inside of the cylinder) x the stroke.

Burden7
10-03-2002, 04:23 PM
The formula for finding the cc's of an engine is:

Bore * Bore * Stroke * .000786

oynot400
10-03-2002, 05:34 PM
Originally posted by Burden7
The formula for finding the cc's of an engine is:

Bore * Bore * Stroke * .000786
That looks right, glad to see that you made it back to the site. :devil
Did you know the guy that went off the track Sat night? They said that he was going to be alright, he just forgot where he was for a little bit. :eek:

beerock
10-03-2002, 06:50 PM
you need to know the piston size and bore size to figure it out
my piston is 67.50mm

how to figure bore size out:

divide piston size by 2 (67.50mm(my piston = 33.75mm)

then convert to centimeters(move the decimal point over a place) 3.375mm

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

3.375mm x 7.2mm = 24.3mm x Pie(3.14) = 76.302mm x 3.375(bore size = 257.51925)now try it with the piston and stroke for your bike...

Buzzsaw
10-03-2002, 07:00 PM
Engine Displacement Calculator http://www.bluetraxx.com/engine_displacement_new.htm

racerx573
11-01-2002, 03:29 PM
It is the same as the formula for a cylinder.

radius squared X height X pi

for those of you who havent passed 6th grade math that is

1/2 bore x 1/2 bore x stroke x 3.14
if you want CC then convert your MM to CM.

beerock
11-01-2002, 03:57 PM
your bore size would be 450.0542375

and the BLUE TRAXX CALCULATOR IS WRONG!!!!!!!!!!

dont use it..

racerx573
11-01-2002, 03:59 PM
Its not 100% wrong, but its off a few decimals, me and Broque spend a lot of time w/ this bore stuff. haha