correct me if im wrong...

[Bansh-eman]

ok so i need to check my math cause its not coming out right...

 

i did the math off a chart and per the chart for every mm stroke you get about 6.5 cc displacment

and for every mm of bore you get 11 cc of displacment..

 

but the math isnt adding up right becasue a stock bore 4 mm stroker is a 370cc

 

and a 4mm stroker with 68mm bore is a 421cc..

 

anyone know what the actuall displacment is for mm of both stroke and bore?

[Big Blue]

I came up with 7cc for 1mm of stroke and 12cc for 1mm of displacement.

[Bansh-eman]

I came up with 7cc for 1mm of stroke and 12cc for 1mm of displacement.

then that pushes it even farther away from the displacment .... how is everyone getting 421 with a 68 bore and 4m stroke? the math isnt adding up right what the hell am i forgetting?

 

 

stupid multi post is screwing it all up lol

[Big Blue]

You can delet post, the option is next to quote, reply, and edit. Is stock bore 64mm? if so with a 4mm crank I come up with 373cc, and for stock bore and stroke it is 347cc.

Edited September 10, 2006 by Big Blue

[Dinner]

Not sure if this will help at all. But what i do to find out what cc something makes is this: (I'll use stock bore and stroke)...bore X bore X stroke X .0007854 X 2(number of cylinders). So it would be: 64 X 64 X 54 X .0007854 X 2 = 347cc

 

Maybe this will help :shrug:

[Bansh-eman]

Not sure if this will help at all. But what i do to find out what cc something makes is this: (I'll use stock bore and stroke)...bore X bore X stroke X .0007854 X 2(number of cylinders). So it would be: 64 X 64 X 54 X .0007854 X 2 = 347cc

 

Maybe this will help :shrug:

 

awsome that works perfect thnx

[Polish]

What if you have a 5mm long rod? :shrug:

[bansheeseat$$]

What if you have a 5mm long rod? :shrug:

Longer rods do not effect your stroke.

[Bansh-eman]

Longer rods do not effect your stroke.

 

indeed