intake manifold queston

harleynut

Senior Member
Question, my 30 Phaeton does not have a vacuum port on the manifold...or any place else that I can see. Is it supposed to?
 
Is this Jan-June '30 intake manifold the same as the 1928 manifolds that had no vacuum port, or are there some differences ?
 
Is this Jan-June '30 intake manifold the same as the 1928 manifolds that had no vacuum port, or are there some differences ?

There were at least 7 different manifolds used, four in 1928 alone.

One had the threaded hole with a domed plug, one had no hole, one had tapered "feet", and one with no hole but a bulge.

1929 the hole showed up again with an oval plug.

June - Aug 1929 had the boss but not drilled.

Mid 30 the hole was moved.

Details are in the Guidelines
 
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