|
|
03-26-2012, 12:44 PM | #1 | |
Colonel
84
Rep 2,792
Posts |
Fabspeed rubbing on rear tranny crossmember
Has anyone else had this problem? This is all I could find:
Quote:
I installed my Fabspeed HFC and x-pipe the other day and the HFC sections rub on the rear transmission crossmember where they angle in to head down the tunnel to the x-pipe. It makes an awful sound during start up and causes a LOT of vibration during acceleration. I can't figure out how to fix it either because there isn't any adjustment in the front pipes/HFC sections. If you could slide the header flanges down the collectors (essentially pushing the whole system back 1/2" or so), you could solve the issue but you can't because the passenger side is welded to the collector. Rotating the pipes down (toward the road) could solve it also but you can't do that on the passenger side (again because the flange is welded to the collector) and even if you could, the pipes would hang down really low compromising clearance with speed bumps and such. The only solution I see is to either cut them and add in a 1/2" or so at the outlet of the cats (to push the bends behind the tranny back) or bang a dent into the pipes with a hammer. Any help here guys? |
|
03-26-2012, 12:48 PM | #2 | |
Brigadier General
720
Rep 3,964
Posts |
Quote:
Dave
__________________
2020 Ford Mustang GT 6MT PP1 444rwhp
(Sold)2013 M3 Coupe-MR/BLK ZCP, 2011 M3 Coupe-MR/Blk 2007 Porsche 997C2S Speed Yellow/Blk sport seats 2004 BMW M3 Imola/Blk |
|
Appreciate
0
|
03-26-2012, 12:50 PM | #3 |
Colonel
84
Rep 2,792
Posts |
Grinding the aluminum crossmember will work too but I'm not about to do that because of a shitty design by Fabspeed. I see no reason why they couldn't have pushed those bends downstream by an inch or so.
Last edited by M3PO; 04-02-2012 at 03:55 PM.. |
Appreciate
0
|
03-26-2012, 12:55 PM | #4 | |
Brigadier General
720
Rep 3,964
Posts |
Quote:
Not to bash Fabspeed, but any aftermarket exhaust that puts the primary cats in the primary OEM location fitment in my eyes will always be an issue as you have to deal with a 4" round cat in where the OEM cat was a flat oval cat. I had a Riss Racing catted xpipe and the cats hung low and they rubbed on anything. That is why I went with the TTPs and did a tune. Dave
__________________
2020 Ford Mustang GT 6MT PP1 444rwhp
(Sold)2013 M3 Coupe-MR/BLK ZCP, 2011 M3 Coupe-MR/Blk 2007 Porsche 997C2S Speed Yellow/Blk sport seats 2004 BMW M3 Imola/Blk |
|
Appreciate
0
|
03-26-2012, 12:55 PM | #5 |
Colonel
84
Rep 2,792
Posts |
Thanks for the reply. I suspect that you are are correct that it needs some aggressive "persuasion" it just pisses me off that this is a $2500 part that doesn't fit correctly due to shoddy design and/or construction.
|
Appreciate
0
|
03-26-2012, 12:59 PM | #6 |
Colonel
84
Rep 2,792
Posts |
I don't remember there being any but I didn't inspect it very closely either. Either way, it seems it's a game of millimeters because the picture in the post that I quoted in the OP seems to have the same problem but the owner didn't report any rubbing. So I don't think it's an install issue.
|
Appreciate
0
|
03-26-2012, 01:04 PM | #7 |
Major General
592
Rep 5,396
Posts |
I had the same exact issue, and no amount of bending / massaging with a crowbar / pick would help at all.
I removed the part, sold it, got turner parts and am much happier. No fitment issues at all. Good luck, hope you can get it to fit.
__________________
|
Appreciate
0
|
03-26-2012, 01:06 PM | #8 |
Colonel
84
Rep 2,792
Posts |
FML, that's not what I wanted to hear!
|
Appreciate
0
|
03-26-2012, 01:40 PM | #9 | |
Colonel
84
Rep 2,792
Posts |
Quote:
The problem is caused by a poorly placed bend about 2+ feet downstream of the cat where the two pipes converge to feed into the x-pipe in the tunnel. Had that bend been moved an inch rearward, there would be ample clearance. |
|
Appreciate
0
|
03-26-2012, 01:56 PM | #10 |
4th down; 4th quarter? Renegade.
87
Rep 3,850
Posts |
I can check my setup next time I have it up...if it is rubbing, I don't think it is making much of a noise, because I don't really notice it.
|
Appreciate
0
|
03-26-2012, 02:24 PM | #11 |
BimmerPost Supporting Vendor
731
Rep 3,735
Posts |
Brent,
We can check it out together when it's on the rack this afternoon. Maybe there is some room for adjustment.
__________________
BMW PERFORMANCE SPECIALISTS. Race Engines. Suspension. F/I. Brakes. Race Preparation. Factory Service. Alignments.
OFFICIAL PARTNERS: KW. MOTON. Brembo. AP Racing. BBS Motorsport. iND. HRE. Turner Motorsport. VAC. BMW Motorsport. Facebook | Instagram | Yelp! | Flikr Phone: 949-233-0448 | E-Mail: info@mrfengineering.com |
Appreciate
0
|
03-26-2012, 03:03 PM | #12 |
BimmerPost Supporting Vendor
731
Rep 3,735
Posts |
Brent,
We can check it out together when it's on the rack this afternoon. Maybe there is some room for adjustment.
__________________
BMW PERFORMANCE SPECIALISTS. Race Engines. Suspension. F/I. Brakes. Race Preparation. Factory Service. Alignments.
OFFICIAL PARTNERS: KW. MOTON. Brembo. AP Racing. BBS Motorsport. iND. HRE. Turner Motorsport. VAC. BMW Motorsport. Facebook | Instagram | Yelp! | Flikr Phone: 949-233-0448 | E-Mail: info@mrfengineering.com |
Appreciate
0
|
03-26-2012, 05:33 PM | #13 | |
Colonel
84
Rep 2,792
Posts |
Quote:
|
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|