Intake crossover holes

• Oct 7, 2018

• #1

Sonny

It’s all fun til the rabbit gets the gun.

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Should I tap and plug this hole under the carb? One is already plugged. I live in Florida and planning to plug the crossover ports. Seems like this hole could cause a vacuum leak if the intake gasket doesn’t seal.

 

• Oct 7, 2018

• #2

Badvert65

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Those are EGR ports. It looks like you have an EGR delete plate on the manifold (bottom of pic). If the plate is sealed properly, you shouldn't have a problem.

 

• Oct 7, 2018

• #3

S

steve340

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I plugged some of those with tapered pipe plugs years ago I was worried raw fuel might get in them with the engine off if the carb leaked. And on the manifold I did if the other end leaked you would get a vacuum leak.
I felt on that particular manifold if the were plugged problem avoided.
Your setup may be different however.