Does porting and polishing help?

newby · 2002-07-22 05:17:00

Shouldn't you know what it is or isn't by now? http://web.camaross.com/bb/tongue.gif

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Jul 23, 2002 | 01:28 PM

#16

Speed Deamon

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Joined: Apr 2002

Posts: 15

From: The Pleasure Box

Shouldn't you know what it is or isn't by now?

Jul 24, 2002 | 09:25 PM

#17

Sitting Bull

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Joined: Jul 2001

Posts: 550

From: Calgary, Alberta, Republic of Western Canada

Quote:

<font face="Verdana, Arial" size="2">Originally posted by aklim:
I'll bite. Why? Does detonation come into play or are you reducing it to say 9.5:1 because I believe you can bring it up to 11:1 with Amuminum heads.

That and the weight savings and the ease of the car nose going up during launch would swing it in favor of the Al heads, IMO</font>

No, it is because the iron heads will retain the heat from the combustion process longer than aluminum heads. This actually allows the compression ratio you choose to be acurately attained. Aluminum dispenses the heat quicker and thus allows a higher compression ratio, but that also becomes a requirement for them to attain the same power as iron at a lower compression ratio.

If they are both set for 11:1, the iron heads will produce more power.