[94cobra69ss396]

Are you sure the compressed thickness on the head gasket is.061? I'm trying to find one that thick but can't. Do you have the P/N of the gasket you're running?

[big_G]

Stop being a cheap bastard and by the tool: All of $4.95 at Summit.

[94cobra69ss396]

Is this the head gasket you are using?

http://www.summitracing.com/parts/FPP-1144-061/

[Vettezuki]

Originally Posted by big_G

Stop being a cheap bastard and by the tool: All of $4.95 at Summit. . .

I don't think you realize just how cheap he is. He once had me weld something . . . have you seen me weld.

[enkeivette]

So does 140psi with a 110 lsa sound about right?

[BRUTAL64]

Originally Posted by Vettezuki

I meant when the engine is running. Or is it like this

Engine off, turning manually, the pressure in the cylinder is "cranking pressure."

Engine running, the pressure in the cylinder is "cylinder pressure."

enkei's motor is boosted, 15psi I think.

Que?

Cranking pressure is "starter" speed cylinder pressure.

[94cobra69ss396]

Originally Posted by enkeivette

So does 140psi with a 110 lsa sound about right?

With the cam timing you have it sounds about right to me. I'm at 150-155 with the Cobra with 9.2:1 compression and a less agressive cam.

[Vettezuki]

Originally Posted by enkeivette

So does 140psi with a 110 lsa sound about right?

By the way, since your FI, how do you factor boost into cranking pressure? After all, when you're jamming air in cylinders, it must be quite a bit higher right . . . Or am I mixing up terms.

[94cobra69ss396]

Originally Posted by Vettezuki

By the way, since your FI, how do you factor boost into cranking pressure? After all, when you're jamming air in cylinders, it must be quite a bit higher right . . . Or am I mixing up terms.

There isn't any boost.

[Vettezuki]

Originally Posted by BRUTAL64

Cranking pressure is "starter" speed cylinder pressure.

Ok, that makes sense. Hence the no boost.