deck volume
Turbo Mini Forums

Im trying to work out my CR and im stuck with my deck volume?
ive measured from top of block to top of piston and got 0.90mm.

could any tell me how to convert this into deck volume cc please, ive done a search but found loads of formula which wen i punch the numbers in gives me a load rubbish(not doing sumat right)

anyway my bore size is 71.12 if this helps.

cheers
jamie

'always keep a spare shot for a stray bird'

I think its 4.45cc

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

pi * (71.92/2) squared *0.090

Edited by Anton on 29th Apr, 2009.

3.93

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

ang on ignore me thats not right

wen i did it i got 3.57. not sure if this was right tho?

'always keep a spare shot for a stray bird'

3.57cc

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

i make it 3.57cc?

nice 1 thanks chaps. could you post up how you came to this so i can double check the method?

'always keep a spare shot for a stray bird'

Just do pi*r^2 xheight ie 3.1415*(71.92/) x 0.9 and then divide by 1000 to go from mm^3 to cubic centimeters

Dont forget the head gasket a BK450 works out to be around 6cc correct me if I am wrong.

Own the day

I thought BK450 was 3.8cc compressed?

Edited by John on 29th Apr, 2009.

If something is worth doing, it's worth doing half of.

Own the day

We list it as 4cc

So am not a million miles off then :)

If something is worth doing, it's worth doing half of.

Dont forget to add in the volume of the dish in your pistons........

"So wat we gonna do tonight Brain?"
"Same thing we do evernight Pinky!"
"Try to take over the world!"

right, now im confused!!
on the CR calc that i have the dish size and head gasket values are in separate fields so this does not need to be added to the deck volume value then, correct?

thanks for the posts guys

Edited by fordimus maximus on 29th Apr, 2009.

'always keep a spare shot for a stray bird'

Dont forget your ring land volume if you want to do it properly.

They are different things, they are added up sepearately if that makes sense. Bascically your deck volume is 3.57.

if he is using the calculator i think he's using it gives boxes for head gasket, piston dish ect but doesnt give a sepereate one for ring lands. i would just add it into the deck volume.

easiets way is to get some glass and vasoline and measure using syringe i would say that would be around the 10-12cc markish

always looking for them bigger bunches of bannanas

thanks guys, the calculator im using does have the separate box for ring lands so ive just added the 3.57 in.

thanks again

'always keep a spare shot for a stray bird'