headers glowing red help

[yannick47]

just rebuild the engine(new cam/lifters)started it up let it run for 20 mins on about 2000 ...1700 rpm...but after a few mintues one of the pipes on the left side and 2 pipes on the right side started glowing red...what could this be(and we dint shut the engine down untill about 15.....the engine was ruunig smooth no vibration/sluggishness.....(video up now of first start)

 

[Garys1969RR]

Sounds like a too lean mixture on those cylinders. What intake manifold and carb are you using? What cam? And what cylinder numbers were glowing red hot? Driver side front to rear is 1-3-5-7, while passenger side is 2-4-6-8. Is this a 440? The more info you can provide, the better we can help.

 

[yannick47]

im using an wieland 8009 intake with an holley 850 dp...lunati 60303 cam edel rpm heads....drivers side 3 and 5 and number 8 on the pasenger side glows and yes its a 440 bored 30 over...just found out that the return line was blocked could this have caused it.....thanks

Sounds like a too lean mixture on those cylinders. What intake manifold and carb are you using? What cam? And what cylinder numbers were glowing red hot? Driver side front to rear is 1-3-5-7, while passenger side is 2-4-6-8. Is this a 440? The more info you can provide, the better we can help.

 

[detmatt1]

Did you degree the cam?

 

[yannick47]

nope its put up dot to dot(i asked the people down at lunati and they said it would be fine??)could this cause it?

Did you degree the cam?

 

[yannick47]

timing?return line blocked??

 

[moparmarks]

Not un-common when breaking in a cam. Header companies say not to use thier coated headers when breaking in a cam.

 

[Hemirunner]

just rebuild the engine(new cam/lifters)started it up let it run for 20 mins on about 2000 ...1700 rpm...but after a few mintues one of the pipes on the left side and 2 pipes on the right side started glowing red...what could this be(and we dint shut the engine down untill about 15.....the engine was ruunig smooth no vibration/sluggishness.....

Ignition timing. Little to no advance or even retarded and the charge is burning in the pipes. Put some advance in it and it'll be fine.

 

[terzmo]

lean...check plugs..check timming also

 

[yannick47]

its not coated..there hedman headers ...and ill try bumping the timmng

Not un-common when breaking in a cam. Header companies say not to use thier coated headers when breaking in a cam.

 

[RustyRatRod]

Perfectly normal. Don't go all crisis about the cam bein degreed in. That crap won't cause anything. It's simply a new engine that's out of tune. Nothing more. Did you let the cam break in? If not, bust it back off and break the cam in good, ignore the headers. After cam break in, then you can fine tune it. Most likely cause is either ratarded timing and or a lean carburetor mixture. Nuthin to it.

 

[yannick47]

thats what my mechanic said and we did run the cam in for 15 minutes....ill play with timing and carb and get back thanks

Perfectly normal. Don't go all crisis about the cam bein degreed in. That crap won't cause anything. It's simply a new engine that's out of tune. Nothing more. Did you let the cam break in? If not, bust it back off and break the cam in good, ignore the headers. After cam break in, then you can fine tune it. Most likely cause is either ratarded timing and or a lean carburetor mixture. Nuthin to it.

 

[RustyRatRod]

Good. Cam break in is real important. That's why I always recommend to finish everything like you were gonna drive it down the road. You'll be able to keep it runnin. Keep us posted.....some video would be cool.

thats what my mechanic said and we did run the cam in for 15 minutes....ill play with timing and carb and get back thanks

 

[super-bee_ski]

Headers glow. (Hell, brake discs glow under extreme working conditions)

Those exhaust temps are typically anywhere from 1100 to 1300 degrees. That is HOT.
The "middle" ports will reflect a higher temp than the outer ports if the ports are close.
Now, if you think your temps are hotter, then you DO have a problem.
I suggest you use a infrared heat temp monitor (gun). Pick it up at harbor freight.
Engine Dyno tests have a sensor (termocouuple) that monitors these temps. Dno testing is a good thing.

 

[Garys1969RR]

I'll bet that motor is cool to look at in the dark, what with the glowing headers and all. Wish mine would do that! Lol

 

[mopar367]

Engines usually run hot on break in. Mine personally would keep boiling the rad over and i had to shut it down. I just kept running it in for 10-15 minutes and it eventually ran cooler. Now after being broken in it stays at less than 180 when driving. I'm sure your issue will resolve itself.

 

[SwedCharger67]

just rebuild the engine(new cam/lifters)started it up let it run for 20 mins on about 2000 ...1700 rpm...but after a few mintues one of the pipes on the left side and 2 pipes on the right side started glowing red...what could this be(and we dint shut the engine down untill about 15.....the engine was ruunig smooth no vibration/sluggishness.....

Uneven fuel distribution in the intake. Most carbed engines have it. A fuel injector for each cylinder with the appropriate electronic control will cure it.

 

[yannick47]

here a video of the start up http://www.youtube.com/watch?v=AC_WfiFR2B4&feature=youtu.be

its only about 8 mins later we saw the heads going red so no vid of that

 

[yannick47]

Another thing is do i need to change the oil after cam break in or do i change it after 500 miles?

 

[moparmarks]

Both. Change it after cam breakin and again at 500 miles.