distributor gaskets

[01A79]

The distributor diagrams from Ford does not show a gasket under the Vacuum adjusting nut nor a washer in front of the rotor. There is no part number for either. Thus, is this just an improvement on Henry's design?

[BUBBAS IGNITION]

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There typically is no gasket under the nut.
However when we rebuild them we use a gasket that we get from our injector business (its a IAC valve gasket ) or a oring to seal this area.


After some vacuum testing i really dont feel a gasket is needed as the fit is fairly tight ( some just use a heavy grease on the threads) as the overall volume of the vacuum signal is fairly large and a slight loss wont be seen as a problem...

Most dont need a washer under the rotor top as well.
Although some rebuilders after replacing the outer bushing add a washer or small shim to re-establish the end play clearance ( back and forth).
I suggest peening the rotor shaft lower end ( to remove all play in the rotor) and then adjusting end play by prying the rotor up and down with a screw driver after assembly.
Seems to work for us....