Bob Allen wrote:
>> All things being equal, you can get 1 point more compression out of
>> aluminum heads than identical steel heads. That is, if you're tuned
>> to run 9 to 1 with iron heads without detonation, then you can get 10
>> to 1 with aluminum heads without detonation.
>>
>> That would be significant.
Michael, New Bern replied:
> Why? Is it heat related?
Yep ... the aluminum head is more efficient at dissipating heat ... so you
can raise the CR without detonation ... for example, the combustion
chamber on the MSX Cross-Flow head is reduced in size, from stock, so
as to increase the CR a point.
Can't wait to see one of these and find out how much they go for ... ;^)
Safety Fast! ... larry.g.unger@lmco.com
'61 MGA 1600 MkII
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