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1975 Datsun 120y Coupe


beaver

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Hey man, very nice coupe!

 

I was wondering if you would share some more about your bike carb setup. How did you tackle the vacuum advance for the distributor?

 

I bought a manifold for my R1s from Bogg Bros but it only has a vacuum outlet from one runner to go to the brake booster. According to Steve at Bogg, I should just run without the vacuum advance, but that sounds counter productive. If you could share your experience with it that would be great.

 

Thanks! I had a little rail with 4 inlets (one for each runner) and a outlet to go to the distributor advance. Its no big deal if you dont run vacuum advance, its really just for additional fuel economy at cruising throttle. Becase of the 4 seperate runners, the vacuum will never be that great (it will be a series of pulses, rather than a single sold vacuum you get from a normal intake manifold where they are all connected.

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