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RickHigginsHtbr
05-09-2004, 08:09 AM
Hey,
The other day I was under my GA about to change out my fuel filter, when I realized this. My engine, headers, muffler, and all exhaust pipes were cool to the touch, yet my cat was still burning up. If everything else has enough time to cool, I wonder how hot that cat really gets. I've always felt like something was choking up the exhaust flow of this engine, but I was thought it was the s-shaped exhaust pipes or the muffler. I know this isnt normal, should I start looking into a higher flow cat?

-Rick

tenspeed
05-09-2004, 11:16 AM
I believe that it is normal.

The excess exhaust gasses burn inside so it's making it's own heat. The other parts transport the exhaust out the back.

Try to find how hot it's supposed to be and see how hot your cat gets before changing it unnessarily.

How many miles?