I just realised that my lt250r is .75 over so what does that make it ???????????

260cc ????

just curious...

 

Here's the formula and you'll have to figure it out because I don't know the bore and stroke of your QRacer.

Take the radius of the bore and square it multiply that by pi and multiply that by the stroke. Then divide that number by 1000 to get your cubic centimeters.

Here's an example of numbers I picked off my head

Bore = 100mm
Radius of bore = 50mm
Stroke = 75mm

2500 * 3.1416 * 75 = 589050
589050/1000 = 589.05 cubic centimeters

To get more precise, use the exact pi amount, 3.1416 is all I can remember but it will get you pretty close.

 

i don't wanna be a smart *** but oh well i'm gonna be anyays...theres no exact value of pi. its an irrational number.

 

just use a bloody calculator haha [img]i/expressions/face-icon-small-tongue.gif[/img] they're close enough

 

<< I just realised that my lt250r is .75 over so what does that make it ??????????? >>



Ummmm...in your ad it says it has a Wiseco piston. I've never heard of a .075 (it's not .75) Wiseco piston so I looked it up in their catalog and there isn't one. There are barely any pistons that come in anything but increments of .010 and starting at .010 or .020 over. Where did you get this piston from?

 

my bad it's .075....

Guess I should go edit that out of my ad........ thanks !!!!

 

Did you read the whole post or stop at the .75 correction? Where did you get a Wiseco .075 piston? According to their catalog, they do not make one.

 

I got it from my local shop in Quebec Canada I know it say .75 or .075 or something like that on the piston and the box it came in was WISECO....... My delaer also told me that my cylinder had been resleeved by the previous owner....... other than that I'm clueless

 

I'll bet he's saying his piston is .75mm not .75inch. Looking my my Wiseco book here it shows that 0.75mm corresponds with 0.30in. That has to be the source of your confusion.