Are my hoses to the heater core routed correctly? They were like that when I bought the truck. The hoses are fairly new but I put them back on the same way I took them off. I was looking at other engine bay pics on this forum and now I am wondering if mine are backwards. If they were backwards would that be causing my poor heater performance?
Seems to me that the hose from the water pump should be going to the top of the core and the hose from the manifold should be going to the bottom to provide the best flow. Let me know
87Dodgeman
12-18-2008, 01:00 PM
I would be more concerned about the fuel line running that close to the exhaust manifold myself.
cribbs74
12-18-2008, 01:39 PM
It looks closer than it actually is, there is about a 2 inch air gap all the way around.
Speed Dragon
12-18-2008, 02:11 PM
I don't think it matters much which way they go, as long as there is flow through. And I would definitely move that fuel line, I run mine up underneath the alternator.
Awingandachair
12-18-2008, 08:11 PM
My hose's run side by side and are secured to the fender well.
Megunticook
12-18-2008, 10:06 PM
This is the factory setup (from the '74 FSM):
http://edgeis.com/graphics/projects/truck/heater/heater-hoses.gif
That's how I set mine up.
Prioritize the fuel line, though--around the front of the block, beneath the alternator, well away from the hot zones.
DiverDwnPowrRam
12-18-2008, 10:18 PM
i would lengthen the top hose and go to the J yard and get a hose bracket for both of the hoses...and yes even though you say it is not close...the line is way to close to the fuel line and can make for vapor lock and such....
cribbs74
12-19-2008, 11:47 AM
Ok loud and clear about the fuel line. I will move it ASAP. Hard to tell from the pic but it looks like the water valve is on the inlet side? Thanks for the pic Megunticook. I saw a truck the other day with the correct mounting for the hoses. I will go and snag it. Thanks Gents.
B-300
12-19-2008, 01:06 PM
Yep, valve on the inlet side (from intake manifold) to the bottom of the core just like a transmission cooler.... This forces air pockets to the top were there expelled, leaving the core full of coolant (or fluid in a transmission cooler) not air for maximum heat transfer.
