I recently had my MGA's engine rebuilt with some, mostly interior,
performance upgrades. One exterior change is a new Aldon/Lucas performance
distributor. The vacuum fitting on the old distributor was designed for a
metal vacuum
tube threaded into the vacuum advance and the carburetor. Mid-way in the
stock metal vacuum tube is an oblong metal chamber through which the vacuum
line extends. The new distributor is designed to make use of a press-on hose
fitting.
My question is this: Is the oblong metal chamber necessary, or can I just
run a rubber vacuum line from the distributor to the carburetor without the
chamber? I know some later
British cars had rubber vacuum tubing, but still used the chamber thingie
mid-way along the route from the carburetors to the distributor. Should I do
this?
Bill Wilkman
1960 MGA
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