Glowing Header Issue...
05-09-2005, 06:16 AM
#1
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Car: 2 Stangs, 2 Third Gens, AWD Talon
Engine: 302, 302, 305, was 327, 4G63
Transmission: T5, C4, T5, T5, 5 Speed
Axle/Gears: All Kinds.
Glowing Header Issue...
Okay, so, I just put a 350 4 bolt in my 84 Z28. It was rebuilt when I bought, and never started since the rebuild. Well, we got it done and it was time to start her up to adjust timing etc. Well, after it was running for about 2 minutes, if that, the passenger side header started glowing red. It was around the #2 and #6 cylinders(the header tubes). Me and my buddy have only one idea. The valve lash isn't right, thus causing the exhaust valves to stay open. Is this the case? Any ideas?
Thanks in advance for the help
Lowell
Thanks in advance for the help
Lowell
05-19-2005, 02:15 PM
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Car: 87 Iroc Showcar - Saturday Nite Hun
Engine: 383 4-Bolt Truck Hyd Roller MiniRam
Transmission: B&M 700R4 - Edge 3200
Axle/Gears: BW 9 Bolt-TA Cover & Stud Kit - 3.2
Glowing
Hi,
You might want to check your AFR after the motor loosings
up a bit.
Once you get it dialed in and a few miles on it , then pull the
plugs on those tubes and check them out for lean or rich
condition.
Take a while to color the plugs unless your running real rich.
Cam and timing issues can also cause burning in the headers
so not only lean would cause that.
Didn't state Inj or carbed.
jaykar
You might want to check your AFR after the motor loosings
up a bit.
Once you get it dialed in and a few miles on it , then pull the
plugs on those tubes and check them out for lean or rich
condition.
Take a while to color the plugs unless your running real rich.
Cam and timing issues can also cause burning in the headers
so not only lean would cause that.
Didn't state Inj or carbed.
jaykar
05-19-2005, 03:48 PM
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Car: '91 Z28 Convertible
Engine: 305 TPI
Transmission: 5 speed
I can imagine how hot they would get if you actually put a load on the engine...
I do know that some header manufacturers state NOT to run headers on a rebuilt engine until it is broken in for X number of minutes because of the higher engine temperatures during the intial break-in.
I know if you have a clogged Cat it can cause excessive heat as well.
I do know that some header manufacturers state NOT to run headers on a rebuilt engine until it is broken in for X number of minutes because of the higher engine temperatures during the intial break-in.
I know if you have a clogged Cat it can cause excessive heat as well.
05-20-2005, 04:20 AM
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Car: 2 Stangs, 2 Third Gens, AWD Talon
Engine: 302, 302, 305, was 327, 4G63
Transmission: T5, C4, T5, T5, 5 Speed
Axle/Gears: All Kinds.
Oops. Sorry guys. It's carbed. My buddy and I got to tuning it, and it turned out to be the valve lash. It was off by a bit. But it seems to be doing good now. I've actually driven the car and the headers no longer glow. Had me way worried. I really appreciate the input. Still got some fine tuning to do, but runs pretty good. Thanks again guys
Lowell
Lowell
05-26-2005, 04:50 AM
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Car: 2 Stangs, 2 Third Gens, AWD Talon
Engine: 302, 302, 305, was 327, 4G63
Transmission: T5, C4, T5, T5, 5 Speed
Axle/Gears: All Kinds.
Originally posted by AaronIROCZ
Timing also can do that to, My distributor bolt cam loose and turned to 14 degrees retarded, during my dyno pulls they would glow cherry red. Checked and reset the timing and instantly fixed, also gained 73 hp out of it to.
Timing also can do that to, My distributor bolt cam loose and turned to 14 degrees retarded, during my dyno pulls they would glow cherry red. Checked and reset the timing and instantly fixed, also gained 73 hp out of it to.
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