Hi List,
I'm having a tough time reconciling the calculated theoretical/static
compression ratio of the later model Healey engines with the published ratio
of 9:1.
Here is my math:
Stroke 3.5" (88.9mm)
Bore: 3.281" (83.34mm)
Calculated cylinder volume Pr2*h: 485mm per cylinder or 2910 for the
engine. So far so good!
For the compression ratio:
Combustion Chamber volume: 53mm
Gasket volume: 2mm
Therefore, calculated compression ratio becomes:
(53+2) / (485+53+2) = 9.82:1
Supposed to be 9:1 !
Any of you geniuses see what I'm doing wrong??
Paul
_______________________________________________
Support Team.Net http://www.team.net/donate.html
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
http://www.team.net/archive
|