vader99

iTrader: (4)

What is the difference between using a smaller head gasket (0.040 cometic) and milling heads to X amount compared to using a gm mls head gasket(0.052 ?) and milling the heads more than X?

The quench would be less in the first instance, but how would that compare to more milling and a thicker gasket in the second instance?

What differences in performance would there be?

camarokid94

iTrader: (2)

quench is the biggest thing really the main reason to use a thinner headgasket. problems could arise if you cannot mill the heads enough to get the right compression.

brad8266

iTrader: (23)

By using a thinner gasket you tighten up the quench area, milling does not do this. Tight quench area aids in prevention of detonation and promotes evenly mixed combustion.

GuitsBoy

iTrader: (4)

To drop chamber volume by one cc, it takes .0065 (6.5 thou). To do the same with a gasket, it only requires .005.

And lik ethe others mentioned, quench is nice.

The Alchemist

iTrader: (19)

Where are you finding a GM mls gasket with a compressed thickness of 0.052??

All I was able to find is 0.056 and 0.060.

GuitsBoy

iTrader: (4)

The MLS gaskets are advertised as .060 but in most cases, they mic out to about .052 -.054.

The Alchemist

iTrader: (19)

That's what I heard as well, and ended up ordering. They are cheaper than cometics, and keep me in a safe PtoV setup.