29 Hudson Vacuum Tank Needed

[Ron P]

Anyone out there have a vacuum tank for a 29 Hudson for sale? Or a top for one that is a Stewart with a 4¼" diameter top with 8 screws ? Thanks Ron

[Geoff C., N.Z.]

Ron, the original vacuum tank for the '29 Hudson does not have 8 screws. It has a pressed steel top, leverless valve mechanism, and a glass sediment bowl built-in at the bottom. Sounds to me like you have the '27 and earlier model with the die-cast top. There are new alloy tops available for these. Go to http://www.vintageandclassicreproductions.com/Catalogue.htm and check their offerrings.
Geoff.

[Geoff C., N.Z.]

Just to clarify, the pressed steel top tanks are used from '28 onwards, and have only four screws in the top. there are slight differences between '28 (no glass bowl) , '29, and '30, but any will intercfhange, and the early lever type can be used. Essex tanks are smaller than Hudson. You can use the small tank on a Hudson,but may experience trouble on a long hill due to not enough reserve fuel in the bottom of the tank. Also a "vacuum booster" can be advantageous. These fit on top of the tank, and utilize a venturi system which sucks air continously across the top of the tank, creating a vacuum, which theoretically precludes the possibility of running out of vacuum when pulling hard uphill. Also stops the regular enriching of the idle mixture as the tank replenishes itself.
Geoff.