Schebler Carb on 1929 Plymouth Engine

[Rick Higgs]

The Pitt Meadows Museum has a McCormick-Deering 15-30 tractor that received the transplant of a 1929 Pymouth Silver Dome 4 cyl. engine at some point early in its life.

 

The engine has good compression, makes decent +30 psi oil pressure, generator charges, radiator has been rebuilt with modern core.  Belts, hoses, spark plugs, oil/filter have all been replaced.  It does draw combustion air through the McC-D's oil bath cleaner.

 

The carb is a Schebler but we have no information on this updraft unit - settings, adjustments etc. - a manual would be very nice.

 

We would like to accurately set mixture and idle.

 

All INFO, ADVICE is most welcome.

 

Rick Higgs

Museum Volunteer

[DFeeney]

In 1928/29/30/31/32 Plymouth used Carter Brass bowl carburetors.  They had a lot of pot metal and usually beyond repair.  Your current carb should work for what you want to use it for.  You should receive additional information from the forum members.

[carbking]

The letters/numbers stamped on the rectangular brass tag by the choke lever should allow identification of the carb.

 

Looks like a tractor carb to me.

 

Jon

[Oldtech]

There's a first. Never heard of swapping a plymouth into a large tractor.  The carb adjustments are the main jet on the bottom - the screw with the pin through it. The screw at the top is the idle jet.

Assuming... the carb is clean and in working order you should be able to get it running with the main jet maybe a turn and a half open.  Then when the engine is warmed up a bit adjust it for best - as in smoothest and fastest at maybe 1200 rpm - what you might guess as  30 mph in an old Plymouth.   If it sputters when you open the throttle, open it up a bit. If the engine"lopes" close it down.  It's trial and error.  

The idle will be likely almost closed. Screw it down shut then open it maybe half a turn. experiment from there.