Mitchcpc
Supercharged
- Joined
- Jul 1, 2007
- Messages
- 260
OK, you guys wanted to know what is on the inside of our cat boxes. Time to find out.
I had a few moments this morning and I thought what the hell, let's just see. So I took the cat box off my '07 figuring this would be easy and after I took the guts out I'd just stick it back together and take a ride.
So you start with the kitty on the bench. First thing is take the heat shield off. The construction is such that you can't just cut the thing in half, because innards are on a frame that is spot welded around the box. You have to decide which half you want to take off and then grind down the spot welds after you cut the shell in half. I used cutting disks on my grinder. Took about an hour and a half to get it apart.
From what I see, there really is no "Baffling" to speak of. The exhaust goes inot the chamber through the magic metal tube and then just goes out to the three exhaust ports. I think I will remove the magic metal tube and stick it back together. OOPS, I can't stick it back together, I think it is stainless and I can't weld stainless, I don't have a MIG welder. Guess I should have thought of that first? Who is going to volunteer to stick it back to gether for me if I pay postage both ways. Surely this educational post is worth that!
This modified CAT box will only be used for off road competition. I have a new one on order for street use.
I had a few moments this morning and I thought what the hell, let's just see. So I took the cat box off my '07 figuring this would be easy and after I took the guts out I'd just stick it back together and take a ride.
So you start with the kitty on the bench. First thing is take the heat shield off. The construction is such that you can't just cut the thing in half, because innards are on a frame that is spot welded around the box. You have to decide which half you want to take off and then grind down the spot welds after you cut the shell in half. I used cutting disks on my grinder. Took about an hour and a half to get it apart.
From what I see, there really is no "Baffling" to speak of. The exhaust goes inot the chamber through the magic metal tube and then just goes out to the three exhaust ports. I think I will remove the magic metal tube and stick it back together. OOPS, I can't stick it back together, I think it is stainless and I can't weld stainless, I don't have a MIG welder. Guess I should have thought of that first? Who is going to volunteer to stick it back to gether for me if I pay postage both ways. Surely this educational post is worth that!
This modified CAT box will only be used for off road competition. I have a new one on order for street use.
