Still glowing headers...
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Still glowing headers...
I've had this ongoing problem since I got my rex a few months ago. I start her up, let her idle for a couple of minutes, and see the exhaust is glowing red. At first, I thought it was a choke related issue, so I decided to start it cold without the choke. Still glowing headers. Then I put on a Weber 45 DCOE with an Atkins straight intake manifold, got rid of the nest, and guess what? Still glowing.
At this point I should mention that the exhaust is the Racing Beat Street setup. I've searched the forum and determined this--nothing. Maybe it's running too lean, or too rich, or it's a timing issue. I don't know if it's possible that there is a problem with the exhaust system or not. The timing has been adjusted a couple of times, and that didn't make any noticable difference. Plugs look good, fairly new coils, new wires. Distributor parts are fairly new as well. I need to make a heat shield for the header as my intake practically touches it. I'm losing my mind on this one! Someone said to have a friend (or enemy) hold a small towel in front of the muffler and rev the engine, stating that it should blow around like crazy...it really didn't. It did blow around a little, but not like crazy.
Also, still using the stock fuel pump...I know, I know, everyone says to replace it with a good one, and I shall in time. But this header thing...anyone? Please?
BTW, thanks to everyone that's been helping me with my carb setup probs, as the advice has been great.
At this point I should mention that the exhaust is the Racing Beat Street setup. I've searched the forum and determined this--nothing. Maybe it's running too lean, or too rich, or it's a timing issue. I don't know if it's possible that there is a problem with the exhaust system or not. The timing has been adjusted a couple of times, and that didn't make any noticable difference. Plugs look good, fairly new coils, new wires. Distributor parts are fairly new as well. I need to make a heat shield for the header as my intake practically touches it. I'm losing my mind on this one! Someone said to have a friend (or enemy) hold a small towel in front of the muffler and rev the engine, stating that it should blow around like crazy...it really didn't. It did blow around a little, but not like crazy.
Also, still using the stock fuel pump...I know, I know, everyone says to replace it with a good one, and I shall in time. But this header thing...anyone? Please?
BTW, thanks to everyone that's been helping me with my carb setup probs, as the advice has been great.
#4
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All that comes to mind is a possible problem with your leading ignition. A problem in that area will lead to higher engine and exhaust temps, even though the coolant temp will still be ok. This is caused by a late detonation of the fuel/air mixture.
Make sure you have a reall good spark on your lead ignition, and that the timing is not too far retarded.
The Haynes manual says that running lean will also cause higher engine temps, but I have been driving with faulty secondaries for a couple of weeks and had no temp issues until I lost my lead coil. At that point the engine was very hot, and so was the exhaust system.
Sorry I can't be of more help, but I'm sure you came to the right place with your question. These guys can be a great help! Good luck!
Make sure you have a reall good spark on your lead ignition, and that the timing is not too far retarded.
The Haynes manual says that running lean will also cause higher engine temps, but I have been driving with faulty secondaries for a couple of weeks and had no temp issues until I lost my lead coil. At that point the engine was very hot, and so was the exhaust system.
Sorry I can't be of more help, but I'm sure you came to the right place with your question. These guys can be a great help! Good luck!
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Are you having any type of performance issues other than the glowing headers (lack of power or weird idle)?
You might try disconnecting the coil for your trailing ignition and seeing how she runs then. There should be very little difference in performance if your leading ignition is performing correctly.
You might try disconnecting the coil for your trailing ignition and seeing how she runs then. There should be very little difference in performance if your leading ignition is performing correctly.
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I get a lack of power after she's been running for awhile, of which I only recently noticed as the temperature and humidity here have started to rise. I attributed the lack of power to excess heat in general, but my first concern is at the carb/intake. I'll try checking the coil tomorrow too and first since it's a lot less trouble. Timing is set a little advanced to compensate for a lack of vacuum advance with the new setup. I got a new thermostat I need to install as well, even though my stock (probably unreliable) temp gauge never goes above 1/3. So many things, so little time...
Last edited by kokujiro; 07-11-04 at 02:20 AM.
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Seriously though, we checked the ignition and timing again and all is well there. We disconnected the exhaust from the header but couldn't run the car as we were in an apartment complex at night (don't want to upset the neighbors with all the noise, you know). Tonight I'm putting the finishing touches on my special heat shield which is made from an old computer case...I'll have to post pics when I get it done. At any rate, I'm just wondering if anyone else has heard of the RB muffler/pre-silencers actually restricting flow enough to cause the headers to glow.
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Originally posted by kokujiro
At this point I should mention that the exhaust is the Racing Beat Street setup.
At this point I should mention that the exhaust is the Racing Beat Street setup.
does it glow at idle and is it constant? also, is this after it has fully warmed up? my gut tells me it may be mixture problem.
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It's a complete RB system. It does glow at idle, it is constant, and after it has warmed up (at least as it's warming up). But a mixture problem seems crazy to me, just because I've had 2 different carbs on it with the same problem. Unless the stock fuel pump isn't delivering as it should, and that could be a problem. I mean, I am running it with a Weber now, so I suppose a new pump might be in order.
#13
timming
i had same thing happen to me so i cranked engine by hand to timmimg mark and thern pulled distributor and aligned the mark on it with the tiny spot on the gear then dropped it back in and fired it up and problem was gone.... then got timmimg light and timed to specs..............only time that has ever happened to me...........your timming is off
#18
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Originally Posted by ReignMan
then got timmimg light and timed to specs..............only time that has ever happened to me...........your timming is off
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