carb boiling

 anyone using carb shields

Mine is on the workbench waiting to be installed. Know of at least 3 people with them on and as far as I hear they all like them and say they work.

Another term for vapor lock, or the carburetor getting so hot that the gas in it boils off and causes the engine to stall from the lack of gas....not good  The shields block the heat from the manifold getting to the carb.

 

|UPDATED|10/23/2012 9:24:13 AM (AZT)|/UPDATED|

My experience with them has not been good. They always seem to create vacuum leaks that just won't go away. The ones we used were the thin aluminuminum ones, and no matter what we did, we could never get them to seal properly. A better choice is to use the thick, phenolic plastic spacers, as they insulate the bottom of the carb from heat much mo betta. Of course, on a Corvette, making the carb sit higher creates it's own problems.

Jimmie, the discussion is about using a heat shield(thin piece of alum. sheet) under the carburetor in an attempt to keep some of the heat from the intake manifold from being absorbed by the carb, which can cause the fuel in the carb to boil.

I just know I have to do something to help the hot starts and also after long ride I put car in garage I could hear gas in carb boiling so thanks for your posts.

What I did to fix this problem in my wifes car was to block the water port under the carb in the intake manifold, and it really helped. Of course, being in Arizona we really don't have to worry about too much cold, but we do worry about too much heat. I have never had to use a carb shield on a Corvette we have owned here yet, and we drive them in 100+ degree temps.