I have been fighting this problem for over a year and it is ticking me off. I run a 415 ci SBC in my CJ-7, I run a stock tuned port unit off a 92 Camaro with Accels latest and greatest Generation 7 Digital fuel injection ECM, fully programmable.

I have been noticing VERY high exhaust temps, the tips will sizzle water off of them after a short trip then I noticed that the headers were glowing, it is hard to see during the day but I night there is a nice mellow glow. The headers are made of 16 guage tubing 1-5/8 primaries and 3" collectors, 2.5" pipe all the way back with dual chamber flowmasters.

The reason this really bothers me is I run Aluminium Brodix track 1 heads and I hate to mess them up, my coolant temp hangs around 190 and the engine performs well.

With the programmable ECM I can adust everything, the timing curve is set as high as possible to avoid pinging and the Air/Fuel ratio is set as close as possible to 14.5:1 I have it a little rich for hard accel and a little lean for cruising.

My question is who else has a glow? Any ill affects to this, any damage, any suggestions on how to stop it?

I have thought about coating the headers but that seems more like a mask rather than a solution.

Thanks for your advice in advance...

Mark :confused:

The headers always glow but pull a few plugs and make sure they are sort of grey not white. If they are grey then it is running good, if they are white then you will end up burning a valve, if they are black then it is running rich. Yours sound s sort of lean buy how far back it goes but it also sounds like a real fire breather of a motor.

Are you trying to use stock injectors in a hopped up motor?

Originally posted by Old Scout
Are you trying to use stock injectors in a hopped up motor?

Negative, I am running 31lb/hr injectors, stock units are 19/lb, these are big enough to support my 450 hp....

Keep in mind I am not running the dog out of this thing to make them glow, just a nice easy trip down the road...

66CjDean, I have not pulled plugs yet but my O2 sensor does not read way lean or way rich... I will check them in the morning..

Just puzzling!

How about some cam specs? Got a grind #.

Originally posted by Old Scout
How about some cam specs? Got a grind #.

Ummm... Ya forgot that!

Crower Hydraulic Roller 277/286 .535/.551 110* Centerline Lobe Center angle 106.5*

Thanks...

Have you hooked it up to a four gas? Ever thought of installing a EGT meter?

Originally posted by Old Scout
Have you hooked it up to a four gas? Ever thought of installing a EGT meter?

What does the 4 gas meter read?

I have a EGT on my Diesel, I may pull it off just for the heck of it and try, can't hurt!

Originally posted by TPIJeep
What does the 4 gas meter read?
!

http://www.asashop.org/autoinc/april/tech2tec.HTM

Id richin it up just a hair - fuel also works for cooling

Originally posted by SPEED FREAK
Id richin it up just a hair - fuel also works for cooling That was my thought. If your running with O2 sensors make sure the voltage is reading correct. Running lean will definately heat up the exhaust system.

When you build a fire in them, they get hot!
I don't know, I think detonation is the thing you need to concerned with. JMO.

Sounds to me that your O2 sencor is faulty and is sending the wrong message to your ECM.
Fit an Exhast Gas Temp meter and see what is realy happening.
Glowing pipes is usually a sure sign of running lean.

It's lean. Oxy. burns hotter that gasoline.....it's not rocket science!!

Since when does oxygen burn?

It's running lean, no doubt... I'd suspect your o2 sensor is not working correctly.

My headers glowed on my SBC when the timing was way off, among other things.

Originally posted by Ultim8kaos
Since when does oxygen burn? All the time. Notice on trucks carrying oxygen it says no spark or open flame. Also the Apollo 1 disaster/fire was caused by a pure oxygen environment. ;)

If you're glowing the headers when you just cruise around i'd say you're timing is a little retarded. I had a set of headers bright red once and the timing was only a few degrees off.
Late spark=hot exhaust

oxygen is not flamable it just makes stuff burn better (hotter)
example: your typical cutting torch or NOS in a car
so any existing flame is just made to burn to its fullest, if you spark a flamable gas it will burn (within certian %) if you spark oxygen you just get a bigger spark.

i also think its running lean

i am just a newbie with HAZ-MAT time so what the fawk do i know
:flipoff2:

Originally posted by Belly Dragger
All the time. Notice on trucks carrying oxygen it says no spark or open flame. Also the Apollo 1 disaster/fire was caused by a pure oxygen environment. ;)

Ever use a Oxy/Acetylene torch? Try and light the oxy side of things by itself...nothing. Light the Acetylene by itself and you get a smoky yellow POS flame. Crack both oxy and acetylene and light em together and it will light up with a bang;)

Rene

Originally posted by Chark
It's lean. Oxy. burns hotter that gasoline.....it's not rocket science!! Your right on chark,it is running- LEAN- , need's more fuel and then the color in the headers will be gone. steve

Originally posted by steve gerstner
Your right on chark,it is running- LEAN- , need's more fuel and then the color in the headers will be gone. steve

Quote:

With the programmable ECM I can adust everything, the timing curve is set as high as possible to avoid pinging and the Air/Fuel ratio is set as close as possible to 14.5:1 I have it a little rich for hard accel and a little lean for cruising



I agree. 14.5:1 is a bit lean in my opinion. Try 13.5 - 14.0.
Also check the timing.