here are a couple of pics of each
Both are genuine Mitsubishi parts





The ridges inbetween the cylinders on the evo 9 gasket are proud and point out.
The ridges inbetween the cylinders on the evo 6 gasket are sunken.

There are various water/oil galley changes, 2 of them being completely blocked on the evo9 (at the bottom).

If anyone wants anymore pics, lemme know.

Cheers, Mike

 

I know that evo9 has improved coolant passage.

 

Speechless Info again

 

improved where?
in the head?
if so, that is false

source: http://www.motoiq.com/magazine_artic...ided-by-8.aspx

 

Wow! I ever wonder do Mike sleep??? hahahaha

 

i'm on the other side of the world buddy
and i'm sick at the mo, so i'm not at work!

 

Wow! Then you have to checkout our Malaysia Island vacation...
Beautiful island for snorkeling & diving...

Can check out my island holiday pictures via my FB (jameswwt@hotmail.com)...hahah

I bet if you like Malaysia then we can setup a workshop here....hahaha

 

Wow, thanks for the info.

 

Thank's Mike

 

pictures did not open. Can you write the thickness please?

 

I measured my Evo 9 headgasket at 0.040" inches using a Mitutoyo Digital Caliper close to the rivets (not near the fire ring, it's a little thicker like 0.042-44" there possibly compressing to 0.040-41" once torqued down on the engine). Felpro also lists their equivalent for a OEM Evo 9 Headgasket as 0.045" and 0.028" for a OEM Evo 8 HG so it's likely very close.

On a similar note I bought a JE ProSeal 0.051" headgasket for $80. It looks like it could be a decent aftermarket headgasket if you don't want to spend $300 on a HKS or $150 on a Cosworth. Comes in 87.3mm for 4G64 applications too, the one I got (MI1001-051) was a 86.3mm bore. 4 Layers MLS w/a stopper layer and made in Italy. I have a feeling they're actually made by Athena Racing Gaskets (P/N 338017R looks IDENTICAL to MI1001-051 down to packaging and both gaskets have the same "features").