There are all kinds of chokes many of which are unaffected by the position of the heater control valve: Electric and Thermostatic off the exhaust being just two of those types. These valves are repairable and there are two firms i know of who rebuild them. One is old air products in Fort Worth Texas and there is another in CA. Valves using cadmium or platinum will not be redone by either firm.
I am realy thankful for your videos! Keep on uploading! I am restoring a 1956 imperial! Btw i am from sweden. it´s not easy to find parts for old chrysler here. But volvo parts are easy. Thank you!
@@massivefins2597 Wow wee- interesting, i always wondered if it was mercury in dare. My all orig 55 chevy has one of those tubes, and in the order magazines - they show that for 1956 - chevy dropped the tube -
@@budsodalsky you can see how it only needs to move a very small amount. This was "automated"... Going back to "manual" heater control is simpler but you would get hot as hell and have to turn it off manually. I guess Chevy went cheap on their heater valves at that time. The higher lines kept the automated expansion line. I think all Mopars used this same heater valve. Chevy went back to the expansion lines in 59+
@ 3:09, you are talking about a capillary tube which is how old school mechanical temperature gauges worked. 😉 Good video!
yeah the closed tube
There are all kinds of chokes many of which are unaffected by the position of the heater control valve: Electric and Thermostatic off the exhaust being just two of those types. These valves are repairable and there are two firms i know of who rebuild them. One is old air products in Fort Worth Texas and there is another in CA. Valves using cadmium or platinum will not be redone by either firm.
I am realy thankful for your videos! Keep on uploading! I am restoring a 1956 imperial!
Btw i am from sweden. it´s not easy to find parts for old chrysler here. But volvo parts are easy. Thank you!
let me know if its the same, i think it is a Ranco :)
This particular valve is nearly identical to one Volvo used for quite a few models.
Thanks for showing how this works, I have a 1957 Dodge Crusader im playing with and the heat isnt working.
Uh, could you explain what is in the tube and how it it strong enough to move the valve?
there is just "air" in the tube.. the heat expands the "air" captured inside the tube and forces the heater valve closed..
@@massivefins2597 Wow wee- interesting, i always wondered if it was mercury in dare. My all orig 55 chevy has one of those tubes, and in the order magazines - they show that for 1956 - chevy dropped the tube -
@@budsodalsky you can see how it only needs to move a very small amount. This was "automated"... Going back to "manual" heater control is simpler but you would get hot as hell and have to turn it off manually. I guess Chevy went cheap on their heater valves at that time. The higher lines kept the automated expansion line. I think all Mopars used this same heater valve. Chevy went back to the expansion lines in 59+
Most cars don't have these they mix the hot and cold air to regulate the heat.