Exhaust manifold

R

rocket1

Well-known member
I picked up a aftermarket exhaust manifold at the macungie pa.car show yesterday.it is called a haydees flash it has a fitting at both ends and a internal tube that terminates at these fittings.the internal tube is burnt out near the middle and a brazing repair was done near the exhaust end of the manifold.i guess i just had to have it and the price was real low,does any body have any info about it and i'm wondering what that internal tube is all about,thanks frank.
 
This is the only photo I could find online. It's from a presentation to the GWC Model A club in Washington DC. The author (unnamed) says "The “Hadees” hot water heater was a very common style found on many cars of the era and had a reputation for producing very hot temps. Could this odd device be one of the reasons? This particular manifold is marked HADEES and has an internal passage that is capped with pipe plugs on this example."
 

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I would think these are probably quite rare because it makes no sense. If you want a water-based heater, you take a line off the coolant pipe like everyone else does. To run a separate water-based circuit that pumps water through the exhaust manifold is asking for trouble – the system would be vulnerable to corrosion, and what happens if you turn off the heater? It would explode as steam.
 
I have seen recently were the model T had a‘vaporizer’ manifold and carburetor that had a tube that ran thru the exhaust
Todd
 
ray in la mesa said:
what is the diameter of the internal tube. I think the haydees heaters were water heaters so it might be a water tube.
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the tube is probably over an inch inside diameter and fittings on both end about 3/8 the tube is rotted out in about the middle.
 
alexiskai said:
this is the only photo i could find online. It's from a presentation to the gwc model a club in washington dc. The author (unnamed) says "the “hadees” hot water heater was a very common style found on many cars of the era and had a reputation for producing very hot temps. Could this odd device be one of the reasons? This particular manifold is marked hadees and has an internal passage that is capped with pipe plugs on this example."
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that is it,mine is brazed near the out let either a blow hole or crack,hard to see inside tube is in the way.
 
alexiskai said:
i would think these are probably quite rare because it makes no sense. If you want a water-based heater, you take a line off the coolant pipe like everyone else does. To run a separate water-based circuit that pumps water through the exhaust manifold is asking for trouble – the system would be vulnerable to corrosion, and what happens if you turn off the heater? It would explode as steam.
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you are probably right because the internal tube is rotted away for a couple of inches it is steel,i guess they did not last forever.when they went must of been interesting!
 
I don't have the Unauthorized Accessories book in front of me, but there was I believe an accessory maniford heater by that name.
 
ericr said:
I don't have the Unauthorized Accessories book in front of me, but there was I believe an accessory maniford heater by that name.
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There is a HaDees heater, p. 129, but it's a conventional water-based design that's pictured with hoses coming off the radiator inlet and outlet sites. No manifold involvement.
 
That manifold might be a good device for making steam if you have an espresso maker built into your car and want to steam the milk for a latte.
 
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