What causes Glowing headers? - Chevy Nova Forum
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Old 20th-August-2005, 10:10 PM   #1
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What causes Glowing headers?

We broke the cam in as per Comps directions, and everything seems good. About an hour of run time now on it. Oil was changed right after break in. The question I have is the headers are getting glowing hot. Will this take care of itself after more run time, or is something wrong ? Temp is only 185
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Old 20th-August-2005, 10:12 PM   #2
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Quote:
Originally Posted by BRETTZER
We broke the cam in as per Comps directions, and everything seems good. About an hour of run time now on it. Oil was changed right after break in. The question I have is the headers are getting glowing hot. Will this take care of itself after more run time, or is something wrong ? Temp is only 185

Wasnt this talked about before in the context of using coated headers during break in?...I believe something in those threads touched on glowing headers.....BTW what is your timing set at?
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Old 23rd-August-2005, 10:35 PM   #3
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well It seems it was the timing to retarded. I thought we had it set at 6 degrees, but it was apparently a few less than that. We bumped it up to 10 and it idles nice in park about 750 Starts better too. The header glow is also no longer. The outside temp is down quite a bit today also, and car is running 20 degrees cooler. Although my shifter cable melted from all the exhaust heat
Is this too much advance now ?
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Old 23rd-August-2005, 10:38 PM   #4
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Quote:
Originally Posted by BRETTZER
well It seems it was the timing to retarded. I thought we had it set at 6 degrees, but it was apparently a few less than that. We bumped it up to 10 and it idles nice in park about 750 Starts better too. The header glow is also no longer. The outside temp is down quite a bit today also, and car is running 20 degrees cooler. Although my shifter cable melted from all the exhaust heat
Is this too much advance now ?
Not sure what heads you are running, but the SBC typically likes 36-38 degrees of TOTAL timing (static + mechanical advance). If you are running some type of fast-burn heads (like the Vortecs for instance), you'll want less total timing - around 32-34 degrees.
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Old 23rd-August-2005, 10:46 PM   #5
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Thanks for the info. I am just learning in his dept
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Old 24th-August-2005, 11:20 AM   #6
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Is it running too lean. That will also make the headers glow.
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Old 24th-August-2005, 11:22 PM   #7
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Sounds like it was from the timing being retarded. That's a pretty common problem. We have done it purposely to help car make it through emissions. If your not getting any ping, and the motor turns over good, it's not too much advance.
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Old 24th-August-2005, 11:48 PM   #8
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I had Goble prove his timing theory when he helped me fired up my car for the first time. No glow was to be seen with the initial timing set to 12* BTDC.
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Old 25th-August-2005, 10:29 PM   #9
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Thanks to all you guys. It's not my Nova, but it has the motor built for the Nova in it now to run until it gets done.

my 67 Camaro (with my 67 Nova motor transplanted in it)
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Old 25th-August-2005, 10:45 PM   #10
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Quote:
Originally Posted by NovatoriusRex
I had Goble prove his timing theory when he helped me fired up my car for the first time. No glow was to be seen with the initial timing set to 12* BTDC.
What's Mike's theory?
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Old 25th-August-2005, 10:54 PM   #11
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Quote:
Originally Posted by Paul Wright
What's Mike's theory?
Goble's Theory of Timing Relativity
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Old 25th-August-2005, 11:39 PM   #12
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Quote:
Originally Posted by DriveWFO
Goble's Theory of Timing Relativity
Pretty much.

From previous discussions around here I got the impression that he strongly believes that most of the glowing header reports are a result of improper timing during break-in.

My experiences in this area just add fuel to support his little fire.
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Old 24th-September-2005, 10:42 PM   #13
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Headers glowing red hot

I have a problem. My block-hugger headers (chrome) are getting red hot when I'm idling after a couple of minutes after start up. Does this happen with chrome normally? I adjusted the valves last week and am running a 4bbl Edelbrock carb, hyd. cam & aluminum heads with RC12YC plugs on my freshly rebuilt 350. Am I lean? Timing too high? Too low of an octane (89)? Engine was getting hot when I took it out for its break-in run. Any help would be appreciated.
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Old 24th-September-2005, 11:16 PM   #14
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My headers were glowing red because it was running too lean, i bought a carb spacer, and eventually got a taller intake which has elimated the problem. also had to do some carb adjusting.
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Old 24th-September-2005, 11:40 PM   #15
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I have just recently had the same issue on break in of my 383. The headers would glow and the operating temp was high. We bumped the timing up and header glow went away, temp came down, and actually oil pressure was a little better. I was told it was either timing or too lean, and too far retarded timing was the culprit. I would check timing first.
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