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Plumbing with no heater return port on new radiator?

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Old Jul 28, 2004 | 11:41 AM
  #1  
Scott_92RS's Avatar
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From: Plano, TX
Car: 1992 RS
Engine: 406 Stealth Ram
Transmission: 700R4
Plumbing with no heater return port on new radiator?

I know its been covered before, but I'm not confident in the way I plan to plumb everything, so I figured I'd ask. Right now I've got the heater system plumbed like this:

Top of water pump to side (supply) port of the HCV
HCV to Heater Core
HCV to radiator heater return

I've been reading and it seems like the top port of the water pump is a heater return port (for older chevy vehicles). So, when I put in my new radiator (no heater return), I'm thinking I need to route everything like this:

Top of Intake to side (supply) port of the HCV
HCV to Heater Core
HCV to top of water pump (for bypass)

Does this sounds correct or way off?

Thanks!

Last edited by Scott_92RS; Jul 28, 2004 at 11:47 AM.
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Old Jul 28, 2004 | 12:16 PM
  #2  
Petes 84Z28's Avatar
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Joined: Jul 1999
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From: out of my mind; be back in 5 minutes....
Car: 1989 Firebird Formula
Engine: Internal Combustion
Transmission: Completed
Axle/Gears: ones that turn.
Re: Plumbing with no heater return port on new radiator?

Originally posted by Scott_92RS
I've been reading and it seems like the top port of the water pump is a heater return port (for older chevy vehicles). So, when I put in my new radiator (no heater return), I'm thinking I need to route everything like this:

Top of Intake to side (supply) port of the HCV
HCV to Heater Core
HCV to top of water pump (for bypass)

Does this sounds correct or way off?

Thanks!
Sounds like you have it figured out.
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Old Jul 28, 2004 | 03:46 PM
  #3  
BretD 88GTA's Avatar
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Joined: Aug 1999
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From: Woodland Hills, CA USA
Car: Yes...
Engine: Last time I checked...
Transmission: See "Engine"...
Re: Plumbing with no heater return port on new radiator?

Originally posted by Scott_92RS
I'm thinking I need to route everything like this:

Top of Intake to side (supply) port of the HCV
HCV to Heater Core
HCV to top of water pump (for bypass)

Does this sounds correct or way off?

Thanks!
Yep, sounds like you have it sorted out. The return hose that would normally connect to the radiator, should get connected to the water pump.
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