215cc heads Vs 205cc heads, where is the cc measured?
12-05-2005, 04:01 AM
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215cc heads Vs 205cc heads, where is the cc measured? 215cc heads Vs 205cc heads, where is the cc measured?
When a head is call as 215cc or 205 intake runner, at what points is that measured?
When a head is call as 215cc or 205 intake runner, at what points is that measured?
12-06-2005, 01:14 PM
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Yup, that's the way it's done: bowl plus runner. To most builders, it's actually the smallest area or the 'throat' of the port that is critical, but on a given engine with no weird, one-off machining, the volume is a good indicator of same. (e.g. a 240 cc BBF port could not be considered equivalent in any way to a 240 cc. SBC.) You set the head up with the manifold gasket surface horizontal, and you fill the port from a burette until it is level full to the gasket surface, then read off how much it held.
