Are yall sure it should glow red? I don't think so. You might want to check on that some more, my 1990 did that 1 time, I just got through running the dog sh!t out of it, and it was the only time I seen it doing that (it was at night time). They're not made to get that kind of heat, I would contact Mazda and ask them.
Well if it's not any of the above. Check out your catalytic converter. Sometimes it gets so plugged up with junk that your exhaust backs up, causing your exhaust manifold to get really REALLY HOT!!! Is your car acting up as well or is it just the exhaust manifold glowing. If your car is shaking, then most likely your converter needs to be changed. Master Muffler does a free inspection of the converter. Anyway Good luck finding the problem.
I checked my exhaust manifold after a run tonight and it was glowing red too. My exhaust system leaks all over the place I'm saving up for a 3" system. I wonder if it will reduce the heat in the manifold.
Yep.. both my GT's turbos were a nice rosy red esp. after high turbine speeds from highway runs... less so with stop ad go.... after seeing it in the dark, it really makes you think (and take seriously) about the cooling period for the turb'... Personally, I have my cooling fan tripped on all the time to pass some air over it... it can take upwards of 5 minutes with the hood open to get it cool enough NOT to glow...
I wonder about that coolin down period 'cos if I leave the engine running after a long drive the temp. gauge starts to creep up. I usually turn open the cabin heater (but not the fan motor) about 5 mins. away from shutting down. I dunno if this really helps drop the coolant temp. into the turbo.
Seeing the manifold glowing red was a suprise to me, no wonder my manifold gasket is blown.
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