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Author Topic:   Help with header glowing
racin5
Dirt Roller

Total posts: 17
posted September 26, 2005 01:39 PM  
My crew tells me they can see the right side header glowing while I'm racing.Probably the center two tubes.Engines seems to run fine.Spark plugs look good.Engine temp is good.The two center header tubes are about 20 degrees hotter than the outer ones but that's about the same on the other side and I figured because they are next to each other,they would be warmer. What do I look for ??
Thank you in advance.

Gene
Dirt Freak

Total posts: 396
posted September 26, 2005 03:59 PM  
You may have a slight vacuum leak, causing those 2 cyl to be a tad lean.

Alan Rat
Dirt Roller

Total posts: 15
posted September 27, 2005 03:14 AM  
I've been there done that. Float level is two high. On a Holley, set the fuel level slightly below the plug. You have to rock the car to get fuel to flow out.

monteregal7
Dirt Maniac

Total posts: 126
posted October 05, 2005 07:59 PM  
Never herd the float bowl trick. Makes sense. Mine glow all over. Never really had any problems. I always herd they glow because too much fuel is burned in the header.

racer17j
Dirt Forum Champ
Total posts: 5390
posted October 05, 2005 10:38 PM  
The timing being too far retarded will also cause headers to glow.

Retarding the timing causes the mixture to ignite later in the combustion/power stroke. This also puts it closer to the time of the exhaust valve opening, effectivly causing the mixture to still be burning while in the headers.

Check your timing at full advance (should be anytime with a locked distributor, otherwise it should be at or before 3000 RPM).

Typically it shouldnt be any less than 30-32 degrees.

If the timing is OK then I would then go for a lean condition.

Hope this helps.

[This message has been edited by Chris Daniel (edited October 05, 2005).]

Chris Daniel
Dirt Roller

Total posts: 7
posted October 05, 2005 10:41 PM  
Beat me to it.

FATBOY90
Dirt Full Roller

Total posts: 52
posted October 22, 2005 01:08 PM  
MAKE SURE YOUR FLOATS ARE LEVEL WITH SIGHT THREADS IF U ARE STILL GLOWING GO BIGGER ON JETS IN INCREMENTS OF 2 I DONT KNOW WHERE THESE GUYS GET THERE INFO BUT LEAN MAENS THERE IS NOT ENOUGH FUEL TO AIR MIXTURE

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FATASS RACING

poorboy racing 53
Dirt Roller

Total posts: 21
posted October 31, 2005 09:42 AM  
We had a similar problem a few years ago. We ran a holley 4 barrel and could not figure it out. Called Holley they said to remove the rear power valve and plug it. We did that with no other changes and the glowing went away.

    

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