A Cat is a Cat
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Cruiser
Joined: Jun 2005
Posts: 242
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A Cat is a Cat
If the Cat is designed to burn excess exhaust gases causing the heat, how is making the engine richer going to reduce the heat. I would think the more excess fuel the hotter the Cat. Confused
Elite HDF Member
Joined: Oct 2006
Posts: 4,128
Likes: 27
From: florida swamp
Richening the fuel reduces motor head temps, the exhaust is still very hot. The cat gets hot because of the hot exhaust. It retains the heat to do it's emission magic. You have to remove or shield the cat to lessen exhaust pipe heat.
Tourer
Joined: Oct 2008
Posts: 315
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From: Texas
what cat?
what application?
Elite HDF Member
Joined: Oct 2006
Posts: 4,128
Likes: 27
From: florida swamp
Yes, the cat will get very hot regardless. They are supposed to.
Road Warrior
Joined: Jun 2007
Posts: 1,788
Likes: 4
From: Here
Right. The metals in the cat don't "activate" for lack of a better word until a certain temp, and it's hot.
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