Exhaust Glow. need some help.
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From: Ashland, KY
Exhaust Glow. need some help.
I posted this on the 47 and older forum and got one responce. So I was going to see what you guys thought. My uncle has got a 1928 modal A. It is all original with the 4 cyl flathead. My dad rebuilt the carb and put it back on. They did adjust the timing some also. It will start and run and after a few mins. the exhaust pipe down from the manifold about 12" it will start glow cherry red. I got a response from R Pope and he said- to turn the gas up some moreor it could be retarded spark or lean mixture or it could be both. And this all make sence so we are going to try doing it tonight. All I was hoping for was one or two more ideas. I don't know alot about the flathead so I was trying to get some info for my dad and uncle. Is this the only 2 things that can cause this. Thanks Scott
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Joined: May 2002
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From: Northwest Fl
On later model vehicles the first section of exhaust pipe from the manifold back is sometime double layered. I once had Nova that the inside layer collapsed on, not sure if your's is built this way or not.
Last edited by Huntsman; Jan 8, 2007 at 10:07 AM.
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From: Near Fresno, California
It is most likely one of the problems already mentioned, but if not I would check to insure all cyclinders are firing. A miss can send unburned gas into the exhaust, which then burns the rich mixture in the first few inches of the exaust pipe.
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Originally Posted by restoringmy46
I posted this on the 47 and older forum and got one responce. So I was going to see what you guys thought. My uncle has got a 1928 modal A. It is all original with the 4 cyl flathead. My dad rebuilt the carb and put it back on. They did adjust the timing some also. It will start and run and after a few mins. the exhaust pipe down from the manifold about 12" it will start glow cherry red. I got a response from R Pope and he said- to turn the gas up some moreor it could be retarded spark or lean mixture or it could be both. And this all make sence so we are going to try doing it tonight. All I was hoping for was one or two more ideas. I don't know alot about the flathead so I was trying to get some info for my dad and uncle. Is this the only 2 things that can cause this. Thanks Scott