Manifold to head seating - how do you check it?

[rlsbee]

When installing a new manifold, how do you check that the manifold is properly seated, with full contact, on the head?
I've used prussian blue and it's okay but I was wondering if anyone had a better method.

Ed: Yes, I meant intake manifold

 

[Meep-Meep]

Intake manifold? My experience has been if it sits on the heads OK and you can line up the bolts then it will work. Check without the gasket in place (valley pan) and eye ball from the front if the angle matches. If exhaust, then you can bolt up just snug so it doesn't move and use feeler gauges.

 

[Photon440]

I usually use the 'check for vacuum leaks while running' approach.

 

[67 coronet]

a marking dye works good.i have had to machine a few manifolds due to custom head milling and i do the by using a feeler guage to determine the amount of material that needs removing.(thats on a big block where you can get to it)i suppose craft clay would work too.

 

[rlsbee]

a marking dye works good.i have had to machine a few manifolds due to custom head milling and i do the by using a feeler guage to determine the amount of material that needs removing.(thats on a big block where you can get to it)i suppose craft clay would work too.

I like that idea about the clay. Didn't think about that but I have some around here that I used to check piston/valve clearance when I built that engine. Thanks, great idea and much neater than prussian blue.