Coolant hose nipples for heater

[Tim Ayers]

I'm trying to figure out an easy way to bring water to a pre-war water heated intake. I recently purchases these coolant nipples that go into the coolant hoses. Do they need Indian shellac or a rubber patch to seal? I've never used these before.

 

[Kube]

I'm trying to figure out an easy way to bring water to a pre-war water heated intake. I recently purchases these coolant nipples that go into the coolant hoses. Do they need Indian shellac or a rubber patch to seal? I've never used these before.

I've installed those numerous times. I always use shellac and have never had an issue with weeping.

 

[mcgarrett]

As Kube said, Indian shellac does a great job. In lieu of that, I used the 3M black weather strip adhesive. Thoroughly clean the area of the hose where the nipple will be installed with lacquer thinner or brake cleaner. None of the connections have leaked a drop since installing them four years ago.

https://www.amazon.com/Black-Super-Weatherstrip-Adhesive-1-oz/dp/B00OPSJRZC/?tag=atomicindus08-20

 

[Tim Ayers]

Great. Thanks, gentlemen!

 

[JayChicago]

You have two nipples. I have never installed a heater, but I believe you only use one nipple, for the return line from the heater into a lower radiator hose. The supply line to the heater comes off a fitting on the cylinder head.

 

[cas3]

for a cabin heater I tapped into the water pump

 

[Tim Ayers]

Gotcha. Interesting point. Here is what I'm trying to do. Bring heat to this water heated intake in the least obtrusive way possible. I really don't want water lines running to it, but living in the Northeast, I think it is going to be needed.

My buddy had the carb heat controls from a Piper Cub and I'm thinking possible including small ball valves to allow me to turn the heat on & off. Roadster sees time on the street and TROG and other drag events where a cold intake would be advantageous.

 

[Tim Ayers]

for a cabin heater I tapped into the water pump

Did you tap that hole? I've seen a few 59AB style pumps that have that heater hose boss already in it.

 

[cas3]

Yes, I drilled and tapped the hole. Its thick enough for threads

 

[Tim Ayers]

Good idea. I may do this. One from the pump, one from the hose.

 

[Tim Ayers]

You have two nipples. I have never installed a heater, but I believe you only use one nipple, for the return line from the heater into a lower radiator hose. The supply line to the heater comes off a fitting on the cylinder head.

My heads are Cyclones and only have one hole tapped for the temp gauge. I'd rather not get into tapping the bosses if I don't haven't to. I like Cas3 idea. I'll tap the pump and use one nipple in the hose. This will be a send and return situation.

 

[cas3]

Keep enough room to get the belt off & on.

 

[Tim Ayers]

Keep enough room to get the belt off & on.

Good advice. I like the 90 degree bend. I can tuck the hose into the frame rail and bring it up to the intake. I really don't like the idea of bringing water heat to it, but I think I've be battling icing if I don't.

 

[cas3]

I'm not a pilot, but had a couple friends with small planes, and I got lots of free air time. If I remember correct, they only put carb heat on for take off and landings. Perhaps a pilot could chime in on this. Where's v8coopman when we need him!!!

 

[petehoovie]

I'm trying to figure out an easy way to bring water to a pre-war water heated intake. I recently purchases these coolant nipples that go into the coolant hoses. Do they need Indian shellac or a rubber patch to seal? I've never used these before.

 

[JayChicago]

I'm not a pilot, but had a couple friends with small planes, and I got lots of free air time. If I remember correct, they only put carb heat on for take off and landings. Perhaps a pilot could chime in on this. Where's v8coopman when we need him!!!

Carb heat (intake deflected from around exhaust manifold) not used during take-off. The heated air degrades performance a bit, and engine is producing lots of heat. Carb heat is necessary under low power, like during descent. So is used during landings.

 

[cas3]

Good explanation. Makes perfect sense, thank you sir.

 

[46HARLEY]

This post reminded me I need to make this repair, what’s the best way to install the short hose. Thanks Larry

 

[cas3]

The short hose on your 2023 Audi ?

 

[pistonbroke]

Here is what I know about old car hot water heaters. First is the water has to circulate . To do this you have to place the hot (supply) side port somewhere on the engine side near the thermostat. That is why on later flatheads its in the top of the head. The cold return is in the water pump pulling the cooled water back into the engine. That all said If you just place those fittings in your upper and lower rad hoses you may get some warmth but nothing to write home about. I would recomend placing the thermost at the radiator end of the hose you tap into for you heater. This will help force hot water though your heating device. One last thing ,no hard bends like 90 degree pipe fitting s. They reduce your flow by adding resistance. Tim