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Heat riser repair
#1
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I know the heat riser is not really needed where I live. But, I plan to enter my 1947 Clipper in judging in the future and was wondering if anyone had a source for a rebuild kit to get it working. It is currently wired open and the engine performs beautifully (recently took a one day 220 mile trip!) but thought I should pursue getting it back to as close to original as possible.
I am changing the exhaust manifold gasket soon and thought I should look into this while the manifold was off the car.

Any comments or suggestions??

Posted on: 2015/10/30 12:58
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Re: Heat riser repair
#2
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Not sure what you have in place or missing but here is a parts illustration showing the major pieces. You might check with Kanter or Max to see if either has a complete rebuild kit. If not, Max lists the bimetal spring and the outer cover on his website. Those are visible parts and maybe he has some other pieces. I didn't check all of them to see what he has. Kanter probably has some too. If the valve shaft is not seized in the bushings and is free to move that is half the battle.

If free to move, the weight and gravity should open and keep the valve open if no bimetal spring is there to close it. If the spring is present, needing to wire it open sounds like the spring is maybe misadjusted, installed incorrectly or defective.

Attach file:



jpg  (33.37 KB)
209_5633c6bb9b4f3.jpg 627X437 px

Posted on: 2015/10/30 13:36
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Re: Heat riser repair
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It's there for a reason, and helps in any climate, tho' obviously more important in Duluth. First, make sure your thermostatic spring is still intact. I was lucky enough to get Max Merritt's last new one in the early '90s, but perhaps he or another Packard vendor has some NOS by now. Barring that, you might match yours with a carburetor choke spring at any long-established, serious auto supply house.
I inveigled John Kepich to produce the bimetallic manifold heat valve thermostatic spring's cover in stainless steel, since the factory's mild steel cover is often rusted away.
Kepich Exhaust, Mocksville, NC: (336) 492-5629 oldcarexhaust@gmail.com

Grease the damper valve both ends with graphite powder which you can work in with kerosene, etc. Adjust it according to the Packard Shop Manual and you'll be good "for the duration."

Posted on: 2015/10/30 13:38
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Re: Heat riser repair
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Thanks! Great response..

Posted on: 2015/10/31 12:28
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Re: Heat riser repair
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The illustration is a treasure. Thanks.

Posted on: 2015/10/31 12:28
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Re: Heat riser repair
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The illustration is a treasure. Thanks.

Posted on: 2015/10/31 12:30
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Re: Heat riser repair
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Sent you a PM.

(o{}o)

Posted on: 2015/11/1 10:27
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