Any advantage or disadvantages to blocking the heat passage in the intake manifold?

Re: Any advantage or disadvantages to blocking the heat passage in the intake manifol

One more question pertaining to removing carb. Is the throttle rod linkage to carb just a simple ball stud that snaps into place? I figured I'd ask before I start tugging on it, lol!

 

Re: Any advantage or disadvantages to blocking the heat passage in the intake manifol

Gasket goes on the manifold, heat shield goes against the carb. Yes, just one heat shield and one gasket.
Just be sure the carb base is clean, fairly flat, and doesn't have passages corroded into it.... that will cause vacuum leaks.

Rod at the carb is snap on/ pull off. Just gently pry it off.

Not sure of the carb mounting bolt torque spec, just go easy. A few fingers on the wrench/ratchet and snug it down.

There's an online '66 Buick Chassis manual over at www.teambuick.com ,look in the reference section.:TU:

 

Re: Any advantage or disadvantages to blocking the heat passage in the intake manifol

I blocked mine at the carb pad - used screw in pipe plugs and JB weld. There's a thread around here somewhere on how to do it correctly. I drive my car right up until it snows and haven't had any carb icing or cold drivability problems.

 

Re: Any advantage or disadvantages to blocking the heat passage in the intake manifol

I wanted to comment on this situation where the paint is burning off of the manifold.

The Buick Dual Exhaust system is designed to be a "balanced" exhaust system. The two sides flow into a single muffler in the stock system. This balances the exhaust pressure at each head.

There is a little butterfly valve on the passenger side that partly closes when cold. This creates a pressure imbalance and that puts some of the hot exhaust gases through the intake manifold. When the engine warms and this valve opens, then most exhaust goes out the pipes and not through the head.

IF you have ANY difference in the restriction between the two sides of the exhaust system, you will force a lot of hot exhaust through the intake and you will boil your fuel and burn your paint.

So look at the exhaust balance. Look for internally collapsed resonators or mufflers if you have installed one on each side (instead of mixing the exhaust from the two sides into a single large muffler).