 
Main Menu
|
|
Nevada Classics
|
|
Advertise at CC
|
| S |
M |
T |
W |
T |
F |
S |
| |
1 |
2 |
3 |
4 |
5 |
6 |
| 7 |
8 |
9 |
10 |
11 |
12 |
13 |
| 14 |
15 |
16 |
17 |
18 |
19 |
20 |
| 21 |
22 |
23 |
24 |
25 |
26 |
27 |
| 28 |
29 |
30 |
|
|
|
|
|
|
CC Advertisers
|
|
08-06-2010, 01:28 PM
|
 |
CC Member
|
|
|
Join Date: Jun 2008
Location: West Suburbs of Chicago,
IL
Cobra Make, Engine: Backdraft#357, 392CI Ford Racing, 459hp, 455ft/lbs , TKO 500, 3.43 Gears, Ceramic Coated Headers, Victor Jr. 750cfm, 17in Halibrand wheels, Sterling Gray/Silver Stripes, Gray Leather, Nitto NT05
Posts: 362
|
|
Not Ranked
Standard Backdraft pipes, internal rattle noise
I have a noise coming from inside the side pipe. It is absolutely not a bracket or external piece making the noise. What's inside the standard BDR pipe? Any idea what it can be or how to fix it without tearing up the pipe?
I have seen threads that the internals appear to be a solid core with two "shotgun" barrels going through it. It looks like solid fiberglass, but I just can figure out what is causing the rattling noise.
Any help would be appreciated, the thought of dropping two grand for new pipes or cutting them up and ruining the appearance is not appealing to me.
__________________
1/4 mile 11.92@115.6 and 60ft 1.632
|
08-06-2010, 05:35 PM
|
 |
CC Member
|
|
|
Join Date: Jul 2005
Location: Virginia Beach, Va & Port Charlotte, Fl.,
Posts: 2,280
|
|
Not Ranked
Quote:
Originally Posted by Jimbocobra
I have a noise coming from inside the side pipe. It is absolutely not a bracket or external piece making the noise. What's inside the standard BDR pipe? Any idea what it can be or how to fix it without tearing up the pipe?
I have seen threads that the internals appear to be a solid core with two "shotgun" barrels going through it. It looks like solid fiberglass, but I just can figure out what is causing the rattling noise.
Any help would be appreciated, the thought of dropping two grand for new pipes or cutting them up and ruining the appearance is not appealing to me.
|
You've got busted spot weld or two on your internal baffle.
__________________
Too many toys?? never!
|
08-06-2010, 05:53 PM
|
|
CC Member
|
|
|
Join Date: Jun 2005
Cobra Make, Engine:
Posts: 3,077
|
|
Not Ranked
It may be possible to locate the baffle and in a spot under the side pipe hidden from view drill a hole and use a screw to force the baffle to one side to quite. Other than that I am afraid you will have to cut it open.
|
08-07-2010, 07:15 AM
|
|
Senior Club Cobra Member
|
|
|
Join Date: Aug 1999
Location: Ellington,
CT
Cobra Make, Engine: Classic Roadster 351W, T5, Red & White
Posts: 3,478
|
|
Not Ranked
madmaxx mentions the approach I had previously used on my sidepipes, and either being lucky of fortunate, the drill/screw approach worked.
Have you contacted the Backdraft dealer for their opinion/suggestions ?
__________________
2014 Porsche Cayman S, 2014 M-B CLA 45 AMG,
Unkown:"Their sweet lines all but take my breath away, and I desire them as much for their beauty as for their use "
|
08-07-2010, 11:39 AM
|
|
CC Member
|
|
|
Join Date: Oct 2006
Location: WASHINGTON,
dc
Cobra Make, Engine: BDR 351 W
Posts: 65
|
|
Not Ranked
Use ear plugs. Cost 2.00 
BDR #334 |
08-07-2010, 12:09 PM
|
 |
CC Member
|
|
|
Join Date: Apr 2006
Location: Los Angeles,
ca
Cobra Make, Engine: Hurricane Motorsports, 427w
Posts: 439
|
|
Not Ranked
Had the same problem. Tried to locate where the rattle was coming from with a stethesic scope for the down-and-dirty soloution madmaxx suggested, but couldn't pinpoint it.
Soloution: ordered a new set of pipes
Matt
__________________
Hurricane Motorsports #1053; 427w
|
08-07-2010, 12:37 PM
|
 |
CC Member
|
|
|
Join Date: Oct 2002
Location: Eagle,
Ne.
Cobra Make, Engine: 1966 Lone Star 427SC.
Posts: 4,301
|
|
Not Ranked
If you want the best stainless pipes made, that will never have rattles or blow out the fiberglass muffler, shoot me a email or PM.
They are expensive but, should last you the life of the car.
__________________
Regards,
Kevin
|
08-07-2010, 12:52 PM
|
|
CC Member
|
|
|
Join Date: Jun 2008
Location: West Suburbs of Chicago,
IL
Cobra Make, Engine: Backdraft#357, 392CI Ford Racing, 459hp, 455ft/lbs , TKO 500, 3.43 Gears, Ceramic Coated Headers, Victor Jr. 750cfm, 17in Halibrand wheels, Sterling Gray/Silver Stripes, Gray Leather, Nitto NT05
Posts: 362
|
|
Not Ranked
Thanks all, I'll try the screw thing first and see if I can find it. Any particular type of screw?
__________________
1/4 mile 11.92@115.6 and 60ft 1.632
|
08-07-2010, 02:57 PM
|
 |
CC Member
|
|
|
Join Date: Mar 2006
Cobra Make, Engine: BDR354/FMS392
Posts: 382
|
|
Not Ranked
I had a couple rattles in mine when I first got the car. One was a washer that was down in the pipe. I have also gotten rocks down inbetween the four tubes before the collector. They made a rattle that drove me crazy. I took the pipes off several times before I figured out that it was not inside the muffler. I would just take the side pipe off and stand it on end. Tap the muffler to see if the rattle moves around. Then try to shake out whatever is stuck in there.
If the baffles are loose, then you may have to open up the pipes if you can't get to them.
|
08-09-2010, 06:19 AM
|
 |
Senior Club Cobra Member
|
|
|
Join Date: Feb 2006
Location: Crosby,
TX
Cobra Make, Engine: BDR #621, Keith Craft 408
Posts: 476
|
|
Not Ranked
Rattle in sidepipe
It's a baffle broken loose. The stock side pipes have two small and IMHO very restrictive baffles. When mine started to rattle I cut them off, both side pipes GONE> Bought Cobra Paks> you can roll a tennis ball thru these front to back. Great sound and I picked up 20 hp and 23 ft lbs tq. PS< had the entire system chromed to match the 17" full chrome knock off wheels.
__________________
"Friends don't let friends apex early"
TCC President 2010
|
08-09-2010, 01:34 PM
|
|
CC Member
|
|
|
Join Date: Mar 2006
Cobra Make, Engine: BDR354/FMS392
Posts: 382
|
|
Not Ranked
I think there is a picture in my gallery of the stock internals if anyone is interested.
|
08-10-2010, 05:15 AM
|
 |
CC Member
|
|
|
Join Date: Dec 2000
Location: Broken Arrow. OK ( South Tulsa), USA,
OK
Cobra Make, Engine: 66 COBRA FE 427 /4SP. (HCS Coupe w/ 408 Stroker and TKO 600 -sold)
Posts: 5,595
|
|
Not Ranked
Let me say this about the spot welds coming loose. It is not a problem unique to Backdraft. I am on my second set of side pipes on my Cobra and it is 10 years old.
I don't think it is the hours on the engine so much as it is the heat cycles and the corrosion that gathers from the condensation etc. Just like most things, time has an effect on all things recycleable.
Good luck with your fix.
Clois
__________________
Sunshine, Asphalt and no stop signs...Perfect
"Let's roll"
"Be part of Something Good
......Leave Something Good Behind!"
from CD "Long Road Out of Eden"
Last edited by Clois Harlan; 08-10-2010 at 06:14 AM..
|
08-10-2010, 05:34 AM
|
 |
CC Member
|
|
|
Join Date: Aug 2008
Cobra Make, Engine: Backdraft / 427sr/tw
Posts: 47
|
|
Not Ranked
Has anyone just replaced the mufflers? I was thinking of going to a more "free Flowing" one anyway.
|
08-10-2010, 06:07 AM
|
|
CC Member
|
|
|
Join Date: Mar 2006
Cobra Make, Engine: BDR354/FMS392
Posts: 382
|
|
Not Ranked
VipertoCobra, you can read about what I did a couple years ago here:
New Mufflers for the BDR;) |
08-10-2010, 06:11 AM
|
 |
CC Member
|
|
|
Join Date: Aug 2007
Location: Richmond,
tx
Cobra Make, Engine: James Yale made ready BDR#546 Radical Keith Craft 427 SB Dynoed 618hp
Posts: 47
|
|
Not Ranked
New mufflers are cheap
Last edited by cobra cowboy; 08-10-2010 at 06:17 AM..
|
08-10-2010, 06:13 AM
|
|
CC Member
|
|
|
Join Date: Aug 2007
Location: Richmond,
tx
Cobra Make, Engine: James Yale made ready BDR#546 Radical Keith Craft 427 SB Dynoed 618hp
Posts: 47
|
|
Not Ranked
Quote:
Originally Posted by vipertocobra
Has anyone just replaced the mufflers? I was thinking of going to a more "free Flowing" one anyway.
|
What mtpockets wrote. We both have redone ours. Much better sound and few extra ponies
Muffler and tip replacement. Parts are like $250 |
08-10-2010, 06:31 AM
|
|
CC Member
|
|
|
Join Date: Aug 2008
Cobra Make, Engine: Backdraft / 427sr/tw
Posts: 47
|
|
Not Ranked
Where did u guys purchase your mufflers? Part #?
|
08-10-2010, 07:39 AM
|
|
CC Member
|
|
|
Join Date: Aug 2007
Location: Richmond,
tx
Cobra Make, Engine: James Yale made ready BDR#546 Radical Keith Craft 427 SB Dynoed 618hp
Posts: 47
|
|
Not Ranked
http://www.classicchambered.com
Depends if you want packing or not. I have no packing in mine.
3028-cobra or 3026-cobra can't remember plus tip
|
08-10-2010, 12:32 PM
|
 |
CC Member
|
|
|
Join Date: Nov 2007
Cobra Make, Engine: Contemporary-427 stroker
Posts: 349
|
|
Not Ranked
Mufflers???
I had "Cobra Pack" installed in my pipes. They are louvered to attenuate the noise some. They work great.
Contact Nick Acton at
http://www.actoncustom.com/Home_Page.php |
11-16-2010, 09:00 AM
|
|
CC Member
|
|
|
Join Date: Jun 2008
Location: West Suburbs of Chicago,
IL
Cobra Make, Engine: Backdraft#357, 392CI Ford Racing, 459hp, 455ft/lbs , TKO 500, 3.43 Gears, Ceramic Coated Headers, Victor Jr. 750cfm, 17in Halibrand wheels, Sterling Gray/Silver Stripes, Gray Leather, Nitto NT05
Posts: 362
|
|
Not Ranked
Rattle Fixed
 Thanks for the advice. We were able to cut a tiny hole near where the rattle came from near the under/backside of the pipe and weld it internally and then filled the hole. You can't even see it. Problem solved for now and I didn't have to cut up the pipes. Nice to hear the only the Ford V8 again!
__________________
1/4 mile 11.92@115.6 and 60ft 1.632
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT -7. The time now is 08:07 PM.
Links monetized by VigLink
|
Linear Mode
