09-07-2010, 12:15 PM
So i have ad this rattle for some time now. Right around the 2K rpm range. I finally narrowed it down to the converter bracket, the one that braces the converter to the back of the engine. The bracket has cracked around the bolt, and I was wondering, do they sell these brackets, or do you have to buy the whole assembly(cat and bracket)? It look as though the bracket is welded to the converter. Please let me know your thoughts.[headbang] Might be an excuse to get a hi-flo cat. I might be able to fix the rattle by placing a washer in there and that might prevent the rattle.
The bracket is sold separately, and bolts onto the CAT, not welded.
See here (From the "Read First" [;)] thread at the top):
CAT Bracket TSB: 05-14-12 (http://www.focusfanatics.com/forum/showthread.php?s=&threadid=86936)
09-07-2010, 12:36 PM
Thanks for the quick response. Since it's a TSB, will they replace this for me at no cost, or does one still have to be under warranty?
Sad thing is, I think I seen this thread you wrote up many moons ago, but it's been forever since I have been on here and am just getting back into the wing of things! [woot] Thanks again! WD40
09-07-2010, 01:28 PM
after looking at that piece, I think it's the bracket that's bolted to the motor. I will have to look at it again tonight. What's the part number for the bracket that mounts to the engine?
Here's a pic of the part number for the bracket that mounts on the block:
Oh...freebies for TSB items is only when the vehicle is still under warranty.
09-07-2010, 11:19 PM
I had the same thing happen to me I just bought the orp and no more noise....
09-14-2010, 02:33 PM
Untill I get a high-flo cat, I used a long steel clamp strap (the plumbing kind that you can tighten) and now no more noise.
09-14-2010, 03:12 PM
Bracket broke on me welded the cracks, put it back on another 5k miles and cracked in other spots. "F this... ripped it off" no more rattles. The end.
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09-15-2010, 02:52 PM
During the winter I had the cat off while I fitted a turbo. I noticed then that the bracket had previously broken off and someone had removed the lower bracket for good measure.
I've never had any rattles of course for this reason.
I think part of the problem with the whole design is that the bracket sees a lot of load from the flexpipe as the engine moves + thermal expansion of the cat + corrosion. Too much for a puny pressed steel bracket. Basically Ford made an arse of the design.
I was worried for a while about the unsupported weight of the cat hanging just on the manifold. But thinking about it, flex pipes are good at flexing side to side, but are much harder to compress. I think a lot of the assembly weight is trying to compress the flex pipe and hence is supported better than it would appear.
In any event my car has done 90,000 miles probably at least half that with no support bracket. My original exhaust manifold still looks fine and has no cracks so I'm not really inclined to want to refit another bracket.
09-16-2010, 08:57 AM
Hear is the exploded diagram from Ford with all the part numbers. I am changing my ZX3 over to SVT exhaust and needed the diagram to get the brackets.