How important is the cat support bracket (OEM exhaust, track car)?? - Ford Focus Forum, Ford Focus ST Forum
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Old 06-09-2008, 07:11 PM   #1
supersonicsvt
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How important is the cat support bracket (OEM exhaust, track car)??

Anyone run their SVTF without the factory support bracket for the cat? I got the exhaust all sorted and installed, but there is no cat support bracket on this car.

Since this car will see track duty, I don't want to fatigue crack the headers from the cat weight being supported by the headers. I am worried about running without the support installed. It should also help keep the rear O2 sensor off the axle.

Anyone have data, especially track data on this? Or better yet, anyone got a cat bracket laying around they want to get rid of? I'd like to have that support for track duty.

TIA


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Old 06-09-2008, 08:04 PM   #2
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Are you running the stock cat? I know the stock cat is heavy so you might want the bracket. I have an aftermarket cat, which is lighter, without the bracket with no problems.
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Old 06-09-2008, 08:07 PM   #3
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Yep, stock cat.
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Old 06-10-2008, 02:22 PM   #4
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I would definitely consider the bracket replacement and advise against running without it.

Aside from supporting the weight, it also minimizes flex.

Under hard cornering and elevation changes, the continual flex at the connection points could break bolts and spread debris across the track (i.e. your exhaust falls off).

Worst case scenario, you lose the whole system from the cat back and shred a rear tire, the long tube becomes a leverage point and causes the car to flip or roll.

Nevermind the obstacle to trailing drivers....
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Old 06-10-2008, 02:28 PM   #5
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Quote:
Originally Posted by WeeAsp View Post
Nevermind the obstacle to trailing drivers....
Yeah, but it's just those pesky M3s.............

Did you ever make it down to Road Atlanta? The DD will be there in July, and then hopefully that is the last track abuse for the DD. The black SVTF track dog will take over in the fall...........
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