Fox Exhaust Rattling On Corners Of Gas Tank

boostfrk

5 Year Member
Aug 30, 2011
711
68
49
Colorado
Been awhile since I've been on here...really not much time for the Fox anymore other than to drive it periodically.

Last year when I did my build thread I installed some of LMR's 2.5" stainless steel exhaust pipes. Fitment was great but as the pipes pass beside the gas tank they sure are close.

Fast forward to a couple months ago when I had to drop the gas tank to replace the fuel pump, and I notice that the pipes have some rub marks on them from the gas tank. So I've determined that the pipes are rubbing on the gas tank on the front two corners of the tank (that point towards the front of the car).

I have stainless steel band clamps so I can adjust the exhaust if needed, but twisting and adjusting the pipes so they don't hit the tank results in the pipes being crooked as they exit the back of the car, especially the left one. I've tried adjusting the mufflers, tailpipes, and a combination of both, but can't get them adjusted to miss the gas tank AND come out of the back of the car straight.

Any ideas? Bending/shaping the corner of the gas tank doesn't seem like a good idea; sounds like a good way to create a leak not to mention the metal is pretty stiff. Is there something rigid enough, yet with enough cushion, that I could wedge in between the points of contact to lessen or eliminate this rattling and rubbing?
 
  • Sponsors(?)


jrichker

StangNet's favorite TOOL
SN Certified Technician
Mar 10, 2000
27,401
2,845
234
74
Dublin GA
lowendmac.com
Cheap and somewhat easy: check the rubber hangers and replace any of them that seem to be old or weather checked.
 

7991LXnSHO

Now I want a 10 year badge
Sep 1, 2010
2,602
427
124
Kearney, NE
If the hangers do not do it, I had to have mine cut and welded at the speed shop. The pipes hit the corner when the exhaust was hot on a hot day. It sounded awful! Since they put it on, there was no charge to cut and weld it right. But a minor tweak should not cost much with newer pipes at a good exhaust shop.
 

Micheal Nadeau

Active Member
Dec 30, 2013
258
32
49
36
Savannah, GA
My Pypes system has this exact same issue. I had to have both tips turned evenly on each other to keep them from rubbing the tank on the front corners. Full stainless set up......
 

Gearbanger 101

Straight Outta Locash
Super Mod
Aug 10, 2002
9,457
1,376
234
Ontario, Canada
The problem seems to our tanks are offset a couple of inches towards the passenger side. For the life of me , I can't figure out why Ford did not align them to my centre?
 

stykthyn

I want to measure mine. It doesn't look that tall.
10 Year Member
Jul 6, 2006
5,302
2,733
223
gainesville
Troof. Tons of room on the driver side. Seems to be offset by at least 2" out 5cm on the pass side. I've cut and re-welded my exhaust to compensate but it's still tight on the pass side.
 

boostfrk

5 Year Member
Aug 30, 2011
711
68
49
Colorado
Thanks guys. Rubber hangers are all nearly brand new; they were replaced when the exhaust was replaced. I'd rather not cut and re-weld them, but it sure is annoying.

I have been contemplating a new gas tank as the tank has a small leak, from somewhere, when the tank is filled all the way up. Getting cold here in Colorado, so maybe a project for a warm day over the winter or next summer. Perhaps if I replace it I could "adjust" the tank to accommodate the exhaust pipes so there isn't any contact.
 

boostfrk

5 Year Member
Aug 30, 2011
711
68
49
Colorado
Finally got this figured out. When I installed the exhaust I used SS band clamps so I could infinitely adjust the exhaust if needed, which I what I did. I was able to loosen the clamps where the tailpipes entered each muffler, and then push the tailpipes into the mufflers another 1/2" or so, providing more clearance between the gas tank and the tailpipes. Without the exhaust rattles the car seems so much smoother and more enjoyable to drive.

I also have a new gas tank waiting to be installed...
 
  • Like
Reactions: A5literMan

aar0s

Founding Member
Dec 20, 1998
1,015
55
69
Thanks guys. Rubber hangers are all nearly brand new; they were replaced when the exhaust was replaced. I'd rather not cut and re-weld them, but it sure is annoying.

I have been contemplating a new gas tank as the tank has a small leak, from somewhere, when the tank is filled all the way up. Getting cold here in Colorado, so maybe a project for a warm day over the winter or next summer. Perhaps if I replace it I could "adjust" the tank to accommodate the exhaust pipes so there isn't any contact.
Probably the grommet where the filler neck goes in, they crack and can cause a leak or let vapors out into the car. LMR had a tank kit at one time with a tank and related parts.
 

boostfrk

5 Year Member
Aug 30, 2011
711
68
49
Colorado
It leaks from the top somewhere...grommet at the filler neck was replaced a year or so ago. Was going to do it this weekend but we got 4" of snow today and it's supposed to be pretty cold over the weekend, so maybe not.
 
Thread starter Similar threads Forum Replies Date
C Exhaust Rattle coming from manifold SN95 V6 Mustang Tech 0
0 Exhaust 2000 Gt Rattle SN95 4.6L Mustang Tech 0
T Need Help With My O/r X Pipe!! The Welcome Wagon 0
S New Catback Exhaust - Rattling Noise SN95 V6 Mustang Tech 4
H Exhaust Rattling maybe clutch SVT Tech Forum 2
black 96 gt Exhaust rattle SN95 4.6L Mustang Tech 3
S Bassani Header/exhaust rattle help SN95 4.6L Mustang Tech 2
stprorolla49 Exhaust Rattle? SN95 4.6L Mustang Tech 7
L Video Of An Exhaust Rattle SN95 4.6L Mustang Tech 4
Aaron Exhaust Rattle 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 15
95GTV8 Exhaust Rattling Fox 5.0 Mustang Tech 10
Pokageek Sheesh...ever since I ran the nitrous that one time I have new exhaust Rattle!! 1994 - 1995 Specific Tech 4
Jenns01TA Exhaust leak + rattle to Dealer = Cross Member Vibration 2005 - 2014 S-197 Mustang -General/Talk- 13
jasonh_86 Exhaust Rattle.. SN95 4.6L Mustang Tech 33
M exhaust rattle 2005 - 2014 Specific V6 Tech 15
Q Exhaust rattle 1996 - 2004 SN95 Mustang -General/Talk- 8
NK06Roush SLP Loudmouth Exhaust Rattle 2005 - 2009 Specific Tech 7
A Exhaust Rattle -or- Detonation? SN95 4.6L Mustang Tech 6
BlackVert Exhaust pipe rattle 1994 - 1995 Specific Tech 9
RysRed96GT options for fixing exhaust rattle on Xpipe? SN95 4.6L Mustang Tech 12
E Exhaust Rattling Help! SN95 4.6L Mustang Tech 0
Red03Mustang Exhaust drone/rattle predicament! I need some info and advice! SN95 4.6L Mustang Tech 10
HyPer-50 Exhaust rattle= weights for the muffler? Fox 5.0 Mustang Tech 8
R Rattle in exhaust SN95 4.6L Mustang Tech 5
0 Speakers rattle w/ exhaust SN95 4.6L Mustang Tech 2
SadbutTrue Guys with Flowmaster setups... how to stop exhaust rattle Classic Mustang Specific Tech 0
TrueBlue03 Trunl Rattle From Exhaust??? SN95 4.6L Mustang Tech 5
C Sounds Like Exhaust Rattle But Its Not The Exhaust SN95 4.6L Mustang Tech 0
C Sounds Like Exhaust Rattle But Its Not The Exhaust SN95 4.6L Mustang Tech 1
B For Sale 99 - 04 Mustang H-pipe with working Cats for sale Other Classifieds 0
C Engine Gray smoke from exhaust. Smells like gas. Fox 5.0 Mustang Tech 15
V Early fox body dual exhaust conversion questions Fox 5.0 Mustang Tech 4
DudeStang For Sale FS: Roush Axle Backs Exhaust Parts 2
T Exhaust upgrade 1996 - 2004 SN95 Mustang -General/Talk- 2
W 347 Header Size and exhaust Diameter 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 50
A Exhaust Question 2005 - 2014 Specific V6 Tech 9
V For Sale Will a roush exhaust for a 2014 gt for a 2014 v6 Exhaust Parts 0
DudeStang For Sale FS: "Mystery Muffler" - Axle Back Exhaust Exhaust Parts 0
T Exhaust Stud & Flange Nuts for '99 3.8l SN95 V6 Mustang Tech 5
L Exhaust Best Fox exhaust Fox 5.0 Mustang Tech 4
A Can anyone tell me whats up with this exhaust sound? Mustang Sound & Shine All 0
DemonGT Stinky Exhaust 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 11
S Interchangle Exhaust 01 Cobra-93 Fox The Welcome Wagon 0
D New Edge exhaust on 94/95? 1994 - 1995 Specific Tech 0
T Exhaust Replacing cats with O/R x pipe and need a tuner Fox 5.0 Mustang Tech 6
LILCBRA 14point7 Spartan 2 install, Holley 4150 tuning, & exhaust escapades 1974 - 1978 Mustang II Talk & Tech 102
79pace 2000 GT Strong exhaust smell possibly really rich but no codes 1996 - 2004 SN95 Mustang -General/Talk- 4
TechAngel Fuel coming from exhaust 1994 - 1995 Specific Tech 46
PonyGTrider Fox Twisted Wedge Exhaust Gasket Interference 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 15
C 2013 Mustang GT Headers 2005 - 2014 S-197 Mustang -General/Talk- 0
Similar threads