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04-15-2010, 12:19 PM
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#1 |
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Loving the Jimmster
Join Date: Jun 2008
Location: Emmett, idaho
Posts: 575
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Heater hose question?
On a 72 jimmy which heater line is the supply and which one is return, I am working on my heating cooling system and cant get the air to stop flowing, so i thought i would just throw in a shut off valve on the intake side of the fluid.
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04-15-2010, 01:19 PM
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#2 |
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20' Daredevil (Ret)
 
Join Date: May 2003
Location: Jefferson State
Posts: 13,814
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Re: Heater hose question?
On my '72 K20 (factory A/C), the OEM valve is on the 5/8" hose from the intake manifold to the lower nipple on the heater core.
The top nipple has a 3/4" hose to the radiator.
__________________
- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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04-15-2010, 05:10 PM
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#3 |
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Registered User
Join Date: Jan 2007
Location: Central Coast California
Posts: 1,029
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Re: Heater hose question?
I always try to remember it like this: The IN line is at the bottom so that it can push the air out the top line. Also, bigger (3/4") OUt line so that pressure doesn't build up.
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1972 K20 Suburban 5.7/700r4/NP205 Dana 44/H052 Sold  1972 C10 5.3L/4L60E 12bolt 5Lug - Sold 1971 K5 Blazer 6.0L LQ9 4L60E NP205 Dana 44/H052!!!  1970 K3500 1ton CrewCab 8.1L/Allison1000/NP205 Dana 60/14B!!!! - Sold 1988 V30 CCLB 7.4L/TH400/NP205/Dana 60/Dana 70!!! (Sold) 2003 K2500HD 8.1/Allison1000/NP263
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04-15-2010, 09:44 PM
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#4 |
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20' Daredevil (Ret)
Join Date: May 2003
Location: Jefferson State
Posts: 13,814
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Re: Heater hose question?
^ That makes perfect sense.... now if I can only remember it.
__________________
- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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