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.

 

dude do you have yous **** somehow clogged? YOur somehow "building" up heat in your exhaust. Check your whole exhaust system ok.

 

That's my next plan, in the morning. Got the car on stands just waiting right now. I just can't imagine how they are clogged...

 

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!

 

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.

 

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...

 

This problem existed before I replaced the coils though, so I'm not sure if it will make a difference. Still gonna check it, though.

 

You should enjoy it. Bask in the warm glow.

 

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.

 

so i'll assume that cats are not an issue here then. is this the complete system as sold by RB or have you substituted something in the middle? just asking because the RB presilencers are the only ones that i have yet to see break and restrict flow. other than that, they should flow fine, single or dual.

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.

 

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.

 

if you've been driving the car, i'd start with what size jets, venturis, etc. before looking at the pump just yet.

 

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

 

Why are you guys resurrecting posts from several years ago?

Nobody is still reading these things, but you...

 

I suppose it will make it a bit easier for the next person who searches and finds this thread.

 

this thread is 2 years old

 

hey at least the newb knew how to search first then ask questions

 

No, YOUR "timming" is off. It's 2 years retarded. :

 

^^^ owned