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Vacuum Line on a 948

mxp01

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I have a 948 engine with the H1 carbs. There is a hard vacuum advance line that runs from the distributor to the base of the carb. It has a small ferrule fitting at the carb connection. Does anyone know the size of that ferrule fitting?

Thanks,

MXP
 
I thought it was the opposite. Threaded end on distributor and rubber connection to carbs. My H1 carbs are in a box somewhere so cannot be sure
 
Threaded at the front carb and distributor. MXP are you looking for thread size or wrench size? I have an original out in the garage I can dig out.
 
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