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Glowing headers

Old 01-06-2013, 09:47 PM
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brady5885
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Default Glowing headers

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Last edited by brady5885; 06-06-2013 at 08:42 PM.
Old 01-06-2013, 10:03 PM
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BOSTONCAMARO
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wondering what ur timing set at... any other recent changes?
Old 01-06-2013, 10:14 PM
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BOSTONCAMARO
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ok, lets get back to the basics...is the distributor in right? can you post pics here so we can all pitch in and help you figure it out....we need to make sure fuel, timing etc is right

glowing headers can be both from a lean or a rich condition, but what concerns me is one cylinder showing the glow...I am thinking maybe a lean condition coupled with retarded timing..(basing this just on what we know so far)

Tim
Old 01-07-2013, 07:54 AM
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fishslayer143
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Originally Posted by BOSTONCAMARO
ok, lets get back to the basics...is the distributor in right? can you post pics here so we can all pitch in and help you figure it out....we need to make sure fuel, timing etc is right

glowing headers can be both from a lean or a rich condition, but what concerns me is one cylinder showing the glow...I am thinking maybe a lean condition coupled with retarded timing..(basing this just on what we know so far)

Tim
glowing exhaust is usually late ignition timing or a restricted exhaust.. like a clogged cat or muffler , bent/flattened pipe
Old 01-07-2013, 08:21 AM
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surfertom
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Default headers

could be valves out of adjustment on # 7 , or worse burned valve.
Old 01-07-2013, 10:55 AM
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BOSTONCAMARO
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please post pictures,,,,I am curious on the physical position of the distributor....and how it was installed...take pic of top of intake, showing dist cap etc....I am betting/hoping we are looking at a tuning problem, timing, fuel etc and not a damaged/burnt valve however what the other forum member posted could indeed be the issue, valve adjustment, burnt/damaged valve....
Old 01-07-2013, 11:10 AM
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Hale584
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I would start with a compression test or leak it down.

JMO

Glen
Old 01-07-2013, 11:11 AM
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Plug wires switched? Perhaps 5 and 7? I had a Ford 289 that did the same thing when I first fired it up. We held it at 2000 rpm to break in the cam but had to shut it down to fix the problem. One cylinder was red hot on the header. Double checking that the wires were on the correct plugs fixed it. Just my $0.02
Old 01-07-2013, 11:19 AM
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likely no damage...lets get some pics going....pics of plugs, etc etc, top of motor showing distributor position, also check your cap, rotor, wires....have am ohm gauge? lets start with the basics, as I am betting that is where the issue is....then on to compression and or checking valve adustment.. all are valid posts from other members
Old 01-08-2013, 12:28 PM
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Hale584
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Brady5885

Start with a compression test. If you have a cylinder down on compression...for what ever reason....anything else you do is time wasted.

Glen
Old 01-08-2013, 01:55 PM
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Is the plug wire that has the red arrow set up as your number one?

Old 01-08-2013, 02:16 PM
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as Hale said...wouldnt hurt to do a compression test, get a baseline, but lets also look at all the spark plugs...they will also give us some info...
Old 01-08-2013, 08:29 PM
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I thought firing order was 1-8-4-3-6-5-7-2?
Old 01-08-2013, 10:09 PM
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I believe you've got the plugs all wrong on the distributor. The reason the firing order was mentioned was b/c that's the sequence the plugs should follow on the distributor. As I see it, you have the #1 wire in the correct spot, and I THINK you go clockwise from there to 8-4-3-6-5-7-2, but don't quote me on that, and I don't have a book close by to verify.
Old 01-09-2013, 06:30 AM
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Danish Shark
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Originally Posted by brady5885
http://www.boxwrench.net/specs/chevy_sb.htm

So are the cylinders numbered as i drew it?

My distributor has numbers on it where the leads go and it is numbered as i drew it, looking at it from above facing the way you sit.
Correct about the cylinder location part, not the distributor part. The numbers you have drawn for the distributor is way off. The correct sequence is 18436572 as the boxwrench link also shows.
Check where the wires actually lead to instead of what numbers somebody scribled on there. They are not connected like they are marked!
Old 01-09-2013, 07:09 AM
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I've seen a header tube glow red hot from a small leak in the gasket or the weld at the flange and it was pulling in air and igniting any unburnt fuel.
Old 01-09-2013, 07:53 AM
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YOUR WIRES may be INCORRECT
FRONT OF SBC

1-------2
3-------4
5-------6
7-------8


DISTRIBUTOR
front
----1---8---
--2------4-- this is correct
--7------3--
----5---6---[/QUOTE]
unless you have a "Corrected " distributor cap ...is it a standard cap, or a corrected cap? is it marked on the cap for plug positions? if its a "corrected " cap, odd /even numbers are on seperate sides......do you have a vacuum gauge? connect to manifold and it will tell you if you have a valve issue on #7 cylinder...this is an excellent site and will explain the readings http://www.secondchancegarage.com/public/186.cfm.. look at scenario #5

Last edited by fishslayer143; 01-09-2013 at 08:34 AM.

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Old 01-09-2013, 09:17 AM
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BOSTONCAMARO
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Brady..did you see the PM I sent you? lets confirm that the distributor is in right...set the motor up on number one, compression stroke, pop the cap off...make sure things are right.
Old 01-09-2013, 07:49 PM
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kjb13
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Looking at your pics, it looks like all of the wires on the passenger side of the distributor are going to the passenger side of the engine and all wires on the drivers side if the dist. are going to the drivers side of the engine. Call me crazy, but that just can't be right. Or did they come up with something new that I'm not aware of ????????
Old 01-09-2013, 09:16 PM
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I would possibly richen it..I personally run AC plugs....which is what they also ran in Apollo 11

Have you set it up on number 1 yet? check the timing mark then remove cap to ensure rotor is pointing to number 1? do this when you can, we need to make sure you are set up right...will only take you a half hour or so...

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