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07-29-2014, 09:49 PM
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#1 |
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Registered User
Join Date: Aug 2013
Location: San Diego, CA
Posts: 236
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Are my heater core lines routed correctly?
The shop that did my tranny swapped my heater core for free when it blew. Now I'm not getting any heat (not that I need it right now) because I think they routed my lines backwards. What do you think?
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1973 Chevy K20 |
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07-29-2014, 09:53 PM
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#2 |
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Registered User
Join Date: Jan 2010
Location: northern arizona
Posts: 259
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Re: Are my heater core lines routed correctly?
In theory, it should work fine.
The heater core and engine both each have a 5/8" and 3/4" fitting, and the hoses really won't interchange due to the size difference. The line going to the radiator could be moved to the water pump (it's a return line) and the fitting at the radiator securely plugged off. I would check the air vents and vacuum lines to make sure the air gets to the heater core when it should.
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"Off the grid and on the seven day weekend plan" "One person cannot know everything, but between all of us, there isn't much we don't know." Last edited by MountainGoat1966; 07-29-2014 at 09:56 PM. Reason: brain fart |
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07-30-2014, 04:38 AM
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#3 |
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Registered User
Join Date: Aug 2009
Location: S.C.
Posts: 1,593
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Re: Are my heater core lines routed correctly?
Check to see if it's getting warm to the heater core. You could have trapped air in it. If the HC is warm and coolant flowing ok, they may have forgotten to connect the blend door.
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'86 C-30 dually, 454/tbh400 '73 K-20 350/350/205 (sold  )I'm kinda like duct tape- no real purpose, but handy to have around. |
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07-30-2014, 08:34 AM
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#4 |
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Registered User
Join Date: Jul 2012
Location: Des Moines IA
Posts: 1,250
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Re: Are my heater core lines routed correctly?
The coolant lines wouldn't matter one bit. Someone either broke or forgot to hook up the blend door vacuum line (or worse yet, it could have been broken inside the box when it was apart). Good luck! Oh, and go get a refund on that "free"!!!
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- 1981 Sierra 454, NV4500 swap - 2006 Z06, 25k miles - 1973 Nova - Project CarNova Virus on Youtube |
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07-30-2014, 05:54 PM
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#5 |
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Registered User
Join Date: Oct 2013
Location: Maine
Posts: 2,376
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Re: Are my heater core lines routed correctly?
The advantage of the heater hose on the radiator is that, when the engine is cold you can take the radiator cap off and you can watch the heater core flow. If it's flowing then it should be getting hot.
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76 Chevy K20 76 GMC K15 77 Chevy C10 77 Chevy K10 |
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