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Heater booster pump function? Heater booster pump function?
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  #1  
Old 01-01-2014, 07:29 AM
t walgamuth's Avatar
dieselarchitect
  
Join Date: Apr 2005
Location: Lafayette Indiana
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Heater booster pump function?
I'm using the 617 motor in my 39 Studebaker pickup. I am wondering what the function of the auxiliary pump is to the heater system. Will I need it in my pickup to get heat from the heater?

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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  #2  
Old 01-01-2014, 08:06 AM
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What are you using for controls?

If your control setup is manual (like in a 240D), then you won't need it.

The pump's purpose is to keep a constant volume of water moving through the heat core when at idle vs when the car is at speed. It helps the automatic control system maintain temperature regulation in situations like stop and go city traffic.
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  #3  
Old 01-01-2014, 08:33 AM
t walgamuth's Avatar
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Yeah, I'll have manual controls.

Thanks Jay Bob!
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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  #4  
Old 01-01-2014, 09:01 AM
JB3 JB3 is offline
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Late to the party, but x2, pretty unnecessary in an out of body swap. I have not had problems with my heat without it in the wifes 300TD, or my swap as well.
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  #5  
Old 01-01-2014, 09:42 AM
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Thanks JB3!
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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  #6  
Old 01-01-2014, 01:43 PM
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Why does ACC need it while manual AC doesn't? I've never looked into it but does the aux pump run only when the monovalve isn't closed?

Sixto
87 300D
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  #7  
Old 01-01-2014, 03:10 PM
t walgamuth's Avatar
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Quote:
Originally Posted by sixto View Post
Why does ACC need it while manual AC doesn't? I've never looked into it but does the aux pump run only when the monovalve isn't closed?

Sixto
87 300D
see post 2?
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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  #8  
Old 01-01-2014, 03:43 PM
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I did but I'm looking for more. IIRC the manual heater valve is a fixed restriction while the monovalve is something like PWM. I would think PWM can respond more quickly. Maybe the PWM acts too quicly (are there slow acting solenoids?) so steady state is never achieved without increased upstream pressure.

Sixto
87 300D
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  #9  
Old 01-01-2014, 04:02 PM
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I get great heat in my Yota conversion with no booster pump. Bake cookies on the dash.
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  #10  
Old 01-01-2014, 05:13 PM
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Quote:
Originally Posted by sixto View Post
I did but I'm looking for more. IIRC the manual heater valve is a fixed restriction while the monovalve is something like PWM. I would think PWM can respond more quickly. Maybe the PWM acts too quicly (are there slow acting solenoids?) so steady state is never achieved without increased upstream pressure.

Sixto
87 300D
Monovalve is not PWM. duty cycles of 1 sec on 1 sec off is not PWM. Don't know when that myth was started.
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  #11  
Old 01-01-2014, 05:48 PM
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Quote:
Originally Posted by funola View Post
Monovalve is not PWM. Don't know when that myth was started.
No kidding. It's a heater, not a guided missile.

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