Don't forget to take into account if the piston top is even with the block
surface or if its slightly higher or lower.
MikeC
>
>Scott et al...
> Here's CC data for my 1147...
> (This is after porting & polishing, decking & shaving)
> Bore: 2.728" + 0.40" = 2.768" (1.384" radius)
> Stroke 2.992"
> Head Combustion Chambers = 32.0 cc
> Head Gasket "volume" = 2.4 cc
> "DEAD" Volume = 34.4 cc
> Cylinder displacement:
> 3.142 X 1.384" X 1.384" X 2.992" = 18.01 cubic inches/cylinder
> 18.01 CI X 16.387 cc/in3 = 295.13 cc/cylinder
> Total displacement:
> 18.01 X 4 = 72.03 cubic inches
> 72.03 CI X 16.387 cc/in3 = 1180.36 cc (1180 rounded off!)
> Compression ratio:
> CR = (bore volume + dead volume)/(dead volume)
> CR = (295.13 + 34.4)/34.4 = 9.58 compression ratio
>
|