through the exhaust manifold, get pressed in far enought to be flush with the top of the manifold or does it get driven in deeper through the manifold? Can it be pressed in only so far? I have a 250hp, 3spd 62. Thanks in advance! Jon
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Jon, Just replaced a 1962 E/Man heat tube...
...with the current day stainless steel offering. In order to replicate the positioning of the OEM mild steel tube, the new tube will not be flush with the top of the E/Man. I would guess at least one eighth inch or so down from the top. Actually, quite similiar to OEM... Happy heat choking... DC -
Re: Does the choke tube that gets pressed....
I am looking at a NOS 62 FI manilold (left side) setting here on my desk. The heat tube is flush with the bottom and not quite flush with the top. The tube is not straight through the manifold but is bent to favor the #3 (second cylinder on left) This gives the majority of the exhaust gas a clear shot at the exit. If you replace it and need to remove it set it up on a mill and get the angle right. A hand drill will enlarge the hole too much, the angle may not be quite right and the tube will be loose. The bend secures the tube in the manifold. Spend the few dollars at your local machine shop and you will be well pleased with the fit.
If you break a stud have it set up in a mill and bored out. You can save the treads and it will fit perfect.Comment
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Would not argue with your input... However:
...did all the above drinking a cup of coffee... Best,DCComment
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Re: Would not argue with your input... However:
I was asking because I had replaced the ex/man choke tube last week and I am still getting exhaust through the choke tube and the clean air tube that slips into the bottom. I currently have the choke tube flush with the top of the manifold. When I cover the top of the choke tube and the top of the clean air tube with my thumbs, I still hear an exhaust leak. I figure this must be at the bottom where the clean air tube slides in. Thus, I must not have the tube driven in far enough. Is there any special drift I can use to drive this in further without messing-up the top of the tube? My brass drift is too large. Will I need to go back and clean the carbon out of both tubes? If so, what should I use? Thanks in advance! JonComment
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Re: Would not argue with your input... However:
Jon,
My experence is that the original tube is flared (press fit into the manifold) on both ends and the repro tube is flared only on one end for easy installation. I sealed both ends of the repro tube with JB weld from the inside of the manifold and mine seems to be fine. You may want to clean the inside of the manifold apply J&B weld and try this first because the un-flared end may be sucking a small amount of exhaust and could be the cause of soot. Other than that, there should be clean air coming from the clean air tube to the choke.Comment
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Re: Does the choke tube that gets pressed....
Larry, check that again. I don't believe '62 FI RH exhaust manifolds (901 or 902) had the choke tube. The manifolds for fuelies were different from the others. Believe the part number was the same, though.Comment
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Thanks for the input guys.........
Tim, what you are saying makes alot of sense. I just couldn't believe I was having this much trouble installing a choke tube. This will be the third time I have had the rt. ex/man off in three weeks only to have the same results. Maybe I can get away with just cleaning the inside of the manifold and sealing- off the top and bottom of the tube that is currently in there. After all, it is new! Thanks again guys! JonComment
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Re: Thanks for the input guys.........
Jon,
I would do as you said, clean area inside manifold and put a little JB weld around the tube at the top and bottom. You may have to do one end and next day do the other end because the epoxy will run down the tube. I would not remove the new tube from the manifold.Comment
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Re: Does the choke tube that gets pressed....
62 was the first year for the carb like choke. Earlier FI had an electric choke. 62 to 65 had the mechanical and exhaust heat stove.Comment
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Re: Does the choke tube that gets pressed....
Larry,
You've got me confused. YOu indicate you have a left-hand FI manifold for a 62 with a choke hole and tube, and that 62 is the first year for the non-electic choke setup for the FI. On 62's 250, 300, and 340 HP, they all had right-hand choke tubes in the 556 and 902 manifolds. 62 FI definitely had an electric choke on the FI, and there were no holes in either manifold (901 and 902) for choke heat tubes. Both the judging manual and my unrestored and top flight 62's bear out that fact.Comment
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