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Carb synch parts.

  • Thread starter Thread starter Anonymous
  • Start date Start date
A

Anonymous

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Does anyone know what thread size the little ports on intake boots are? M6?

Also, how much vacuum does each carb pull? Would a 0-30in Hg gauges work?

I just recommended http://www.mcmaster.com/ as a source for parts in another thread and thought I might just build myself a carb synch setup and was wondering about the thread size of those ports.

TIA
 
I never tried measuring the heigth but I think that 8-10" is probably close. It shouldn't be too hard to make but finding elemental mercury might be difficult. At least I'd hope it would be.
 
I was thinking of getting 4 glycerin filled vacuum gauges so that I don't have to worry about the mercury.

The motion pro looks like a bargain, but I just know I will end up spilling that Hg all over the place and in California that is probably punishable by 3 points and revoking of your M1 license!
 
Dennis Kirk has some little brass nipples that you can use to replace the Allen screws in the boots. You just leave 'em in. I got one of those allegedly "hookie" vacuum synch tools. The adapters that came with it won't fit up under the carbs, so I pulled one of the screws and it appears to be 5mm so that's what I ordered and knowing my luck it will be the 6's
 
Thanks for all the replies. As usual this forum is a wonderful resource!
 
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