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
I know, it can get rather anal...
Peter Ficklin
'63 & '68 Spits
Fresno, CA
- - - - -
ScottBarr8@aol.com wrote:
>
<SNIP>
> Ok, anybody out there ever CC their combustion chambers or have other
> information concerning the combustion chamber volumes on said Spits?
>
> Scott
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