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Glowing manifolds

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ftcjimmy

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After returning to a friends house from Christening my shiny new TSLs :laugh: , i looked itnto my front wheel well to discover that my stock exhuast manifold was glowing. I wasnt running at very high RPMs and only was out for about 45 min. I have no exhuast whatsoever ( the pipes from each side connect under the drivers seat, thats it :doah: ) so i know there is very very little backpressure if any. Isthis unussual or telling me there is something wrong. I should also add i dont know if this is the first time this was just by chance i looked and noticed it so i dont know of this happening ne previous times. Thanks for any input.
 
I was gonna say clogged cat, but seeing you have no exhaust, sounds like its runnin really lean.
 
Lean is what I'm thinking too. Try retarding timing a bit maybe.
 
Wow... if you were running it for 45 minutes with the headers glowing, I would think your engine would be long gone. I remember seeing a turboed blue late model chevy truck on a dyno and the header would glow at the end of the pull... it was only 3-4 seconds and it was glowing. You think yours was like that for 45 minutes?! Damn, your lucky the truck still runs.
 
I used to have a 440 Dodge truck that did that. The manifolds looked like GIANT Chevy ram horns. At night, on long trips, I would pull off the highway to gas up. Open the hood to check the oil, and the centers of both manifolds would be glowing. Could not see it in direct light, but at night looked kinda like charcoal dying down. It was a lean carb issue. Once I got the truck up to 8K feet, the glowing stopped.
 
Does sound like a very lean fuel mixture. That can be very bad, you definitely need to check that out.
 
My brother did a research project for credit when he was still in high school on an electric racecar. The mentors were working at SW Research in San Antonio, TX. Anyways, he was excused to go watch the Rolex 24hrs at Daytona as school business for the project. There is cool video of the night-time driving with the turbocharged cars. He was using nightvision on the Sony handycam and the turbos and brake rotors glow in the dark, such cool video.
 
Here's my $0.02,

Both mine and my dad's trucks have done this before. In both instances it was the dizzy advance had quit working. It was replaced, and the manifolds stopped glowing.Just something to check. If you place your hand just under the dizzy you can feel the advance, take the vac.line off and then plug it back on, if it's working you should feel it move. Ours would'nt move when we tried it.Replaced the advance and re-tested it again, and it moved like it was supposed to. Glowing stopped. Hope this helps.




Wayne
 
My 400SB did this too,during the winter after plowing my drivway enough to get to the street to go get gas --at the station,I noticed the exhaust manifold on the drivers side was glowing a dull red color--it was paper thin due to rust,and had lost several layers and was cracked too..after I put a good used one on it never glowed again...I could see where retarted timing might cause fuel to finish burning in the exhaust,and make them glow too.. :crazy:
 
yep to lean

you can try timming whow ever with open exhause im betting on the carb or injection if its a carb re-jet or get a bigger carb if its injection i would get bigger injector's or a mod chip to incress the fuel ratio, and possably a bigger pump , but dont drive it till you figure it out or you can brun the valves or worse melt a piston
 
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