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By Silver Heels - 8 Years Ago
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Hello, I just had my Autolite 2100 carb rebuilt by Carburetor USA and for anyone interested, I highly recommend their services. I do have a question though before I install. My phenolic spacer does not have 2 distinct holes under each throttle plate, rather they are conjoined similar to this example:
The new flange gasket I have has two distinct holes:
I assume I would trim this gasket to fit the contour of the spacer, correct?
Finally, some examples have three additional small holes punched in the material as this example:
Can you folks give any insight as to which gasket would be the correct one to use? Thanks for your help
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By charliemccraney - 8 Years Ago
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It would be best to trim the gasket so eliminate the potential of an unsupported section from breaking off and making its way into the engine. That may not happen and a piece of paper gasket might not cause any problems but it is quick and easy to ensure that it can never happen.
Holes are usually in gaskets for a reason - there is some sort of passage that is important to the function of the carburetor or some other device. See if your particular carb needs that. If it does, then you need the gasket with extra holes. If it does not, then either gasket will probably work.
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By Lord Gaga - 8 Years Ago
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Why don't you ask Carburator USA?
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By Silver Heels - 8 Years Ago
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I have an email to them about it and am waiting to hear back. At the same time, this is more a question as it relates to my 292 y block than it relates to the carburetor itself. For one thing, the spacer was never sent in with the carburetor, so I can see why I may have been provided a generic gasket that fits 95% if the applications. I guess I was just curious if anyone else here knew if this year required a different gasket. Here are some pics if it can help:
Thanks!
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By Lord Gaga - 8 Years Ago
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It looks to me as though the gasket in your photo will work OK.
Ideally the bores in the spacer should match the diameter of the holes in the manifold and carburator.
The turbulence caused by the mismatch won't hurt the performance of a street driven car...it might even help at low RPMs.
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By Ted - 8 Years Ago
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That 2V carburetor spacer with the open slot between the bores looks normal for the 1960-1964 pickup Y engines. I would suggest cutting the gasket so it matches the spacer opening.
The gasket with the large ‘tang’ on its back is for the lower side of the water heated carb spacer found on other Sixties era Ford engines. That gasket will work in a non-heated spacer application though.
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By Silver Heels - 8 Years Ago
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Thank you all for your second opinions, I appreciate your input and can now proceed with confidence
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