Generally
A pair of custom-made gaskets for the intake. The type we have now developed is made of a stainless steel that can withstand the exhaust heat that occurs on one side of the gasket. It is very important that you glue this gasket, it works not without gluing it. Glue both sides of the gasket to the sealing surfaces. The glue is not included if you buy this pair of gaskets. These are intake gaskets that have blocked preheating channels. With original gaskets, hot exhaust gases travel through the preheating channel in the middle of the intake. The reason for this is that, if the temperature is around zero and it is humid weather, there is a risk of ice forming in the carburetor base and in the upper part of the intake. With ice plugs in the fuel channels, the engine stops. And you couldn't have Cadillacs that risk stopping when the temperature is around zero with humid weather, so that's why they solved it this way. Nowadays with modern fuel and with driving mostly in the summer, we have bigger problems with overheating and vapor lock than ice formation in the carburetor. Then this could be the solution to blocking the preheating with these special gaskets. But (as usual, there is always a but) The preheating channel that runs between the left and right cylinder heads also fulfills another function. And that is to equalize the exhaust pressure between the cylinder heads. Some cars have an equalization between the exhaust pipes under the car, Cadillac 1949-67 has this equalization in the intake. What can then happen is that you get a different exhaust sound and that the engine does not run as smoothly as with an open equalization pipe. We have sold lots of these gaskets and some think that the original is better, other customers say that it is absolutely perfect and all hot running problems and vapor lock disappear completely. We also have customers who have drilled 8-15mm holes in the blocked gasket surface, this way you get a throttling of the heat at the same time as you get an equalization between the cylinder head exhaust channels. If you have bought these gaskets and found a good middle ground with, for example, the diameter of the drill hole, please contact us. Regards. Tommy / TA Motor AB
