Do crescent holes on a carburetor mounting gasket matter?

15

Asked by Jul 07, 2015 at 12:14 PM about the 1978 Lincoln Continental

Question type: Maintenance & Repair

I already have one without the crescent holes... I think the crescent holes are called air
intakes.

15 Answers

96,895

Vacuum supply for the PCV valve.

15

I found the right one, but I was wondering if the two small holes connecting will cause any problems?

96,895

Sorry those aren't the same gaskets, the last one is for EGR plate to manifold.

96,895

What engine do you have? Maybe I can locate a pert number for you.

15

It's a 1978 Lincoln Contiental 7.5L I'm pretty sure the first one was wrong I was looking for Carburetor mounting gaskets.

96,895

Victor G26750

96,895

Pic.

15

I have that one, it doesn't cover the crescent shaped hole

96,895

OK the second gasket you showed is the correct gasket for that spot, then there should be an EGR plate that goes on top of that then the third gasket and then the carb. Is that the setup you have? Or are trying an EGR delete plate?

15

So second gasket I showed you, this thingy(picture) then Victor G26750?

15

Where does the ECR plate go on? The small holes?

96,895

That one goes on the EGR valve to plate. The second one you showed is the one that goes down first on the intake manifold, then the ERG spacer plate, then the gasket I showed you, then the carburetor, then this final gasket goes on the end of the EGR plate right where the EGR valve or block off plate goes. Note if using a block off plate you are going to have to change the ignition advance curve to prevent engine pinging. HTH

15

So an EGR plate isn't necessary?

96,895

It is best to keep as stock as possible if you want to maintain factory performance. So the EGR is needed if staying stock. You didn't state why you had the carb and EGR spacer plate off.

96,895

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