heres a link i found. straight forward easy to understand stuff. might help someone.
http://www.car-sound.com/04basics/04failures.asp

 

nice find

 

Yes. Very good info.

 

thanks for sharing!

 

Answer : Human beings.

 

It a catalytic convertor gets clogged or a meltdown occurs can that be seen by looking down the pipe?

I noticed that all the examples had the catalytic cut in half to show the damage.

 

No wonder our 8's have so many catalyst failures - we have all the characteristics that destroy converters (and more?):
- more unburned fuel than a piston engine entering exhaust causing higher EGTs and carbon buildup
- oil being added to the combustion process via the OMP and Premix causing even more carbon generation
- carbon buildup fouling the plugs and amplifying the unburned fuel problem
- all this super heating and clogging the converter at the same time
- all this excess converter heat backing up causing higher engine/exhaust/combustion temps
- More heat stress on all engine components

What to do? Glad I run FP60.

 

So i thought mine was failing this week and it turns out i needed 4 new plugs and 4 new coils.. and it probably was failing, because needing 4 new plugs and 4 new coils would cause the damn thing to eat unburnt fuel..
they shoulda replaced it..
blah.. dealerships..

 

Samething we been saying for years, but another sight helps those that question us.

 

I had mine replaced because *SHHhhhhhhh* I dont want to say it here.

When he show me the *dead cat*, it was actually all empty inside .... damn now when I think of it, I should've asked him *Can I keep it?* lol guess not, I think dealerships need the old parts to get credit for new parts.

 

Even though an RX-8 runs rich, too lean will burn up the cat too. Your EGT will increase with a lean condition also.