Headgasket

[Fredrik]

What thickness MLS headgasket do you guys normaly run? for a forged engine

 

[dac69er]

I went with a 1.3mm cometic.

Most people go with a 1.2-1.4mm

This depends on many things including, but not limited to; the type of piston you are using, the fuel you are using, the boost pressure aim and what you want from the engine. I decided on a static cr based around the above factors and made a decision based on that.

If you have performance cams, you should consider the dynamic cr too. As I'm using stock cams, I didn't worry too much about that on my build.

 

[Fredrik]

Thx mate Was thinking about the 1.3mm aswell

 

[Fredrik]

Im going for the Arias 8.5:1 pistons 74mm but i can only find a cometic headgasket for 74,5mm any tougths about this?

 

[dac69er]

You want the headgasket to have a larger bore than the bore of your cylinder. You probably want to go for a 75mm bore headgasket imo.

 

[daniel_g]

Its best to email cometic headgasket UK with exactly what you want, takes about 3 months to arrive from America, I'm still waiting on mine. I have a 1.0mm and a 1.2mm 75.5mm on order, for Wossner 8.46cr pistons.

 

[Fredrik]

Found a shop in America who had them in stock Shipped out today and should arrive in a week

 

[daniel_g]

Thats good news, yeah Alamo Autosports has a few in stock but not exactly what I required.