Re: engine capacity

["R. O. Lindsay" <rolindsay@dgrc.com>]

Malcolm Jeffcock wrote:

> If you have a standard B engine overbored 40 thou what is the new engine
> capacity??

Displacement is,

   V = Pi * R * R * S * 4

V = displacement
Pi = 3.14159
R = radius of bore in cm.  In your case, (original bore + 0.102)/2
S = stroke, in cm

So, a stock engine is,

   V = 3.14159 * 4.013 * 4.013 * 8.89 * 4 = 1799cc

Your engine is,

   V = 3.14159 * 4.064 * 4.064 * 8.89 * 4 = 1845cc

...a 2.6% increase.

rick

///
///  mgs@autox.team.net mailing list
///  (If they are dupes, this trailer may also catch them.)