North American Turbocoupe Organization



Exhaust Manifold Glowing Red Hot
MartyPA Offline
Senior Member
#1
Any info would help.
I took a drive last night and opened the hood to check a hose I put on and noticed the Exhaust Manifold glowing red hot like it just came out of a mold at a steel mill.I noticed a big loss of compression so I'm guessing Cat converter.I also have to replace a intake manifold gasket.Money is tight right now so would the intake gasket have any effect on the exhaust manifold glowing?Thanks in advance for any help.I see you guys seem to know your stuff here.
1988 TurboCoupe Automatic Black-Maroon Cloth interior--
No mods yet but someday when everything else is right.
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Jeff K Offline
Administrator
#2
A leaky intake manifold gasket will suck in unmetered air under no boost conditions, making the mixture lean, which will produce high exhaust temps. Under boost, air will leak out, and it will run rich, which, if real rich, can also lead to high exhaust temps.

What about your ignition timing? Excessively advanced or retarded timing will also lead to high exhaust temps.

With all that said, if you pop the hood, especially at night, right after some "spirited driving", it is normal for the manifold and turbo turbine housing to glow a dull red, but it shouldnt glow if you drive it easy, and stay out of boost most of the time.

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Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 20 psi, forced air intercooler, water injection, bypass valve, Ranger roller cam, subframes, etc., etc.. // 86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP nitrous, ignition, gears, suspension, etc., etc.... // 91 Escort: Bone stock winter car // 00 Windstar (wifes vehicle)
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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methos Offline
Senior Member
#3
all this I didn't know... that may also explain why I can't run the car in the high boost ranges with out it backfiring at 14 psi and just loosing power at 10
Jason Schaffer
88TC - 5speed, all options but leather and sunroof
Mods: 3.73 Gears
Finally getting it back together.
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turboken Offline
Member
#4
I was told by russ at rapido that it is normal after hard driving to see the manifold glow. Whatever is wrong with your car could be causing it to glow also?.
88TC-Black/Raven,A237 cam,ported and polished intakes/exhaust, gillis valve, o-ringed deck, head studs
85 Xr7 rough survivor 82k miles
2008 Subaru Impreza non turbo :-(
73 Honda CB750 (running parts bike for dads '69)
04 Honda 1000rr
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bigep74 Offline
Junior Member
#5
I just experianced this also , my Cat was plugged and who knows how long. It warped my exuast valves
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