I’m looking to connect my heater on my project correctly. Need advice on which hose goes where on this Y Block engine. One hose goes from an outlet on the intake manifold and the other from an outlet on the p***enger side of the water pump. Which of these would be the “hot” water source for the heater? Which hose goes to the upper heater outlet tube and which to the lower heater outlet tube? Thank you for your help.
The fitting on the manifold is the HOT one. I'd probably hook it to the lower one on the heater but Ford may have had other ideas.
Sounds like the rooster caught up with ya when your back was turned. The hot water inlet line needs to be the one that is turned off by either an external heater valve or the internal valve in the heater box. If it doesn't have one, the heater likely won't know which hose is routed where. All cars should have one to keep the heater from warming the interior during summer.
Yes, the intake is the hot water supply. The valve you have installed is the 'cheap fix' instead of the somewhat expensive vacuum valve Ford used as OEM... https://www.ebay.com/itm/1277179461...MI5q2R-4OUkwMVeNXCBB1SBhw-EAQYAiABEgLd2PD_BwE And unfortunately, that's only part of it. There's another vacuum valve located under the dash at the heater that gets its vacuum source from the wipers, this is where the cable from your temp control lever connects. This had a hose that went to the manifold valve and opened it under command from the under-dash valve. They were known for diaphragm failures and leaking. At one time not too far in the past, that manifold valve was unobtainium, the valve you have now was the usual answer. The problem with these is they tend to leak pretty good if they're not fully closed or fully open, so its full heat or no heat. Ford also offered a 'base' heater (up until the late '60s on various vehicles, rarely seen) that was operated with one knob. Pushed in, no heat. Pulling halfway out got you heat, all the way was defrost. You turned the knob for the fan. No temp control at all, Ford owners manuals recommended opening a window... LOL. That's what you'll be doing...
On my 55 Bird I use a br*** elbow at the intake manifold. That hose then connects to a valve that is controlled by the original heater control on the dash with a cable connect. It works reasonably well and is much cheaper than the original style valve on the manifold. It mounts inline in the hose. Out of site. Available from most T-Bird supply houses. Although I think it is originally a Mopar part? You may be able to take this pic of the valve to a local parts house and have them match it up. (if they are any good!)
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