vacuum advance question
 

i am new to the forum and was wondering if someone could give some advice on the correct installation for the distributor vacuum advance for a 1969 judge with manual 4 speed transmission. Any help would be appreciated.

Thanks
lew4ut

Ported vacuum from the upper right front (driver side) of the carb.

And welcome

Thanks very much.

Ported vacuum was for emissions only and one reason that some cars diesel when shut off.

Where do you suggest I get the vacuum for the distributor then?

Thanks
lew4ut

Distributor vacuum control valve was used for the manual transmission, it will use both ported and manifold vacuum. That is if you have the two hose hookup on the distributor vacuum.one in the front and one in the back. Otherwise manifold valve hookup if you only have the one distributor vac connection.

Thanks.

Lew4ut

My personal preference is full vacuum at idle. I haven't had an engine yet, that I didn't feel like it ran better. It just sounds like you're able to achieve the same idle speed with less effort (judging from the exhaust note). It allows a smaller carb throttle blade opening for better signal to the idle circuit in the carb, and as mentioned, less chance for dieseling on shutoff.

Thanks for all your replies and suggestions.

lew4ut

Both of my 69 4spd cars didn't have any vacuum control valve. It was just one hose from the vacuum advance to a metal hose and then another rubber hose to the left bottom of the Qjet as the factory photo shows.

ok Thanks

lew4ut, Distributor vacuum advance valve may
only have been used for the early 69 manual ram air III .

Ok, Thanks My 69 was a late build; 4th week of July.

Thanks