Glowing headers
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Glowing headers

  1. #1
    Or Seth, either one Budweiser's Avatar
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    Default Glowing headers

    Took the boat out yesterday. On the 6 (or so) mile ride back to the trailer I held her at WOT. This was just after sunset, so it was getting dark. Once I arrived I turned around to take a look at the engine and the headers were glowing bright orange! Is this normal, or is it an indication that the engine may be too rich or too lean or something? Timing is set at 36* @ 2000 rpm, creeping up to 38* at 5000rpm. I was turning 4500-5000 the whole time. Yes, the headers are run dry.

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    Cantard 71hallett's Avatar
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    You know the next question is what do the plugs look like?
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    E-7 Sheepdog (ret) SmokinLowriderSS's Avatar
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    Not uncomon on dry headers. The gasses SHOULD BE anywhere from 1,000 to perhaps over 1,200 degrees F.

    "Orange" is a steel temperature of 930*C

    "Light Red" looks to my eye more like an "orange" orange (the fruit). 870*C

    "Yellow" is 1050*C

    Steel temperature color chart.
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    "The" masheenist wsuwrhr's Avatar
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    Mine are the same.

    Car headers are worse since there is less air circulation.

    On the turbo motors, it is not uncommon to be able to "see" the impeller on a hotrod turbo motor.
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    mo balls than $cents$ IMPATIENT 1's Avatar
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    my coated headers on my tx19 glowed alil, a/f was perfect.a proper a/f ratio will still make some egt.

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    "The" masheenist wsuwrhr's Avatar
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    Quote Originally Posted by IMPATIENT 1 View Post
    my coated headers on my tx19 glowed alil, a/f was perfect.a proper a/f ratio will still make some egt.
    Oh yea,

    Mine are coated as well.
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  9. #7
    Resident Ford Nut Sleeper CP's Avatar
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    Did they look anything like this:

    http://www.hotboatpics.com/pics/data...ne_testing.wmv

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    Resident Ford Nut Sleeper CP's Avatar
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    I think the guys standing to the right is going to be deaf.

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    Quote Originally Posted by Sleeper CP View Post
    Did they look anything like this:

    http://www.hotboatpics.com/pics/data...ne_testing.wmv

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  12. #10
    steelcomp was here
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    Not terribly uncommon on a long pull like that, but usually more indicative of raw fuel burning in the header pipe than too lean. A little rich = a little safe.
    Last edited by scott foxwell; 11-27-2008 at 09:52 AM.
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    Highaboosta Unchained's Avatar
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    Quote Originally Posted by steelcomp View Post
    , but usually more indicative of raw fuel burning in the header pipe that too lean. .
    ?? That's a contradiction

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  14. #12
    Bouncing off rocks TryMe's Avatar
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    mine will do the same thing, be careful cause that will start to lift the coating off your headers at the flange, then it creeps up the pipe

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    E-7 Sheepdog (ret) SmokinLowriderSS's Avatar
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    Quote Originally Posted by steelcomp View Post
    .........usually more indicative of raw fuel burning in the header pipe that too lean.........
    I am sure he meant THAN to lean, and only typo'd thaT unchained.


    Also, that hot, the steel weakens under heat, and they will start to sag, sooner or later, under their own weight (unless you already have them braced).
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  16. #14
    steelcomp was here
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    Quote Originally Posted by SmokinLowriderSS View Post
    I am sure he meant THAN to lean, and only typo'd thaT unchained.


    Also, that hot, the steel weakens under heat, and they will start to sag, sooner or later, under their own weight (unless you already have them braced).
    Pretty obvious what I meant.... (thanks Sarg...)
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