Lateral-g Forums - Compression Drop for larger cc heads?

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g356gear

01-15-2009 10:07 AM

Compression Drop for larger cc heads?

Hey guys,
Looking at changing from a 109cc head to a 118cc head. I am currently at around 10.0:1. Any idea how much compression I would drop by going to the larger combustion chamber?

MarkM66

01-15-2009 11:50 AM

What size engine?

g356gear

01-19-2009 08:58 PM

Quote:

Originally Posted by MarkM66 (Post 189155)

What size engine?

Chevy 454

tony byram

01-20-2009 10:11 AM

Need to know, 1. has the engine been bored, if so how much? 2. what type of pistons are you running. 3. thickness and type of head gaskets. Ballpark guess would be around 9.0-9.5. This is just a guesstamate.

MarkM66

01-21-2009 07:31 AM

You can play around with this;

http://www.csgnetwork.com/compcalc.html

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