Re: Henry's 37 Limousine
Posted by HH56 On 2016/10/6 16:41:29
If your tube goes directly into the manifold, yes there would be something which could be considered an exhaust leak -- and if the engine runs rich or burns oil, soot will be drawn in and could cover the components inside the choke mechanism and might cause issues.
The manifold heaters after your type are shown in the illustration. Those had a stainless or maybe just a good quality steel tube which was inserted or driven in a cast pair of holes in the manifold. It was a straight thru tube with a restriction on the bottom end to limit air flow. Exhaust warmed the tube which in turn warmed the outside air as it was drawn thru to the choke mechanism. The tube going to the choke just slid into the top of the steel heater tube. That second tube was not press fit but was similar to the same setup turned on it s side as used on your 55.
You could do similar by using a cup type freeze plug on that large hole. Make a chamber out of it and then do the screw on cover plate as Fred mentioned. Drill a small hole in the plate for an air inlet and attach the fitting in another spot to connect to the car.b. The exhaust would heat the cup which would heat the air inside the chamber and work the same as the straight tube on later manifolds.
Attach file:
(32.40 KB)
The manifold heaters after your type are shown in the illustration. Those had a stainless or maybe just a good quality steel tube which was inserted or driven in a cast pair of holes in the manifold. It was a straight thru tube with a restriction on the bottom end to limit air flow. Exhaust warmed the tube which in turn warmed the outside air as it was drawn thru to the choke mechanism. The tube going to the choke just slid into the top of the steel heater tube. That second tube was not press fit but was similar to the same setup turned on it s side as used on your 55.
You could do similar by using a cup type freeze plug on that large hole. Make a chamber out of it and then do the screw on cover plate as Fred mentioned. Drill a small hole in the plate for an air inlet and attach the fitting in another spot to connect to the car.b. The exhaust would heat the cup which would heat the air inside the chamber and work the same as the straight tube on later manifolds.
Attach file:
(32.40 KB)
This Post was from: https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?post_id=182813