temperature ported vacuum switch ?
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Elder User
Joined: Jun 2009
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From: nw pa.
temperature ported vacuum switch ?
My truck is cold blooded so looking to get a ported vacuum switch that screws into the water neck.
I called the auto parts store and they had grey or black one.but couldn't tell me the difference except 17.00 or 40.00 ?
1969 351w 2v currently.
Ty
I called the auto parts store and they had grey or black one.but couldn't tell me the difference except 17.00 or 40.00 ?
1969 351w 2v currently.
Ty
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From: Virginia
What do you want this switch to do, or what does it go to? Usually getting the heated air snorkel valve working on the factory air cleaner will get rid of any cold natured behavior after you have gotten the choke adjusted correctly.
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Elder User
Joined: Jun 2009
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From: nw pa.
Hey thanks for replying .
i want to stop vacuum from
Going to the distributor until the engine
Is warmed up.
If i just take off after a couple
Mind of warm up it back fires thru the carb
i want to stop vacuum from
Going to the distributor until the engine
Is warmed up.
If i just take off after a couple
Mind of warm up it back fires thru the carb
Post Fiend
Joined: Jul 2004
Posts: 8,786
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From: Northern California
They are color coded for temperature, and have 2, 3, or more ports.
Two port:
Black = 92F /98F
Etc...
Depending on the color depends on the temperature it opens, shuts etc...
Two port:
Black = 92F /98F
Etc...
Depending on the color depends on the temperature it opens, shuts etc...
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At idle, you most likely don't have any vacuum going to the distributor anyway until you press the gas. (If it's connected to a ported vacuum source)
However, more timing (via vacuum advance or initial) improves the slow burning mixture when cold. If you really want to buy this vacuum switch I would connect it so that it gets full manifold vacuum when cold and ported vacuum when warmed up.. if you are not satisfied then connect it how you like.. the issue may not even be timing related.. it could just be the choke... but I assure you that you Windsor will like more than the 10 degrees factory setting...
However, more timing (via vacuum advance or initial) improves the slow burning mixture when cold. If you really want to buy this vacuum switch I would connect it so that it gets full manifold vacuum when cold and ported vacuum when warmed up.. if you are not satisfied then connect it how you like.. the issue may not even be timing related.. it could just be the choke... but I assure you that you Windsor will like more than the 10 degrees factory setting...
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