Hey guys i Have changed to a 2.85lt h/c head on my 3.3lt. So i was thinking would my car no longer be a 3.3lt. I decided to try and work out the capacity myself but every result i get is way off
I was using the formula for a cylinder (v= pie x r squared then x by hieght) then x by 6
But i always comes out too large.
So Basically can anyone give me the math on how they calculate capacity of a motor?
Last edited by Pub247; 15-04-2007 at 03:42 PM.
Volume of cylinder = (pi*(diameter^2)/4)*stroke
Engine capacity = volume per cylinder * number of cylinders
If I am reading correctly, have you changed the head? If so you haven't changed the capacity of the engine at all.
2009 FG G6ET395rwkw11.76 @ 117 MPH (350rwkw)
It may have dropped down to about 3.2 because of the slightly smaller combustion chambers in the head. You would have to measure both heads to see if there actually was a difference though.
changing the bore and stroke is the only wat to increase capacity the combustion chamber size only effects compression