what the %@#$
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Elder User
Joined: Sep 2003
Posts: 892
Likes: 3
From: Quinton NJ
what the %@#$
hello all. I just got in from installing my 3-3.5" dp and I also killed the kitty (thanks Dale!!). well my question is...Has anyone noticed an increase in interior noise? It seems to be coming from the down pipe im not sure if this is normal???
thank you in advance
thank you in advance
Fleet Mechanic
Joined: Oct 2003
Posts: 1,764
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From: CentralEastern Utah
Sounds like the dp may be touching the frame or firewall. Double check to make sure its not rubbing anywhere. Its not uncommon for the truck to sound a bit louder after installing a bigger exhaust.
Senior User
Joined: Jul 2005
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From: new york
you will know if the dp is touching the truck. I had this problem for quite awhile after installing mine.It took 5 or 6 tries to get it perfect.All my bushings are shot and there is just enough room for the dp.If the dp is touching it will resonte through the whole truck.
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Elder User
Joined: Sep 2003
Posts: 892
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From: Quinton NJ
thanks for the replies. but will i be able to adjust the dp because i tightened the clamps pretty tight? and there aint much more I can get out of the firewall. also how tight should i have tightened the t clamp on the turbo and dp? thanks again
Senior User
Joined: Oct 2004
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adjustment room
The only way to adjust downpipe and exhaust system, is to loosen clamps in multiple connections so you can make adjustments. Pain in the xxxx, but no easier way. When I installed my downpipe I used a 2x4, to press against firewall for more clearance room. Tight fit if trying to change from stock to 3 inch downpipe. A llittle wd-40 works well when trying to slip pipe connections, or change positions. jcab
Originally Posted by Gobstopper909
thanks for the replies. but will i be able to adjust the dp because i tightened the clamps pretty tight? and there aint much more I can get out of the firewall. also how tight should i have tightened the t clamp on the turbo and dp? thanks again
Last edited by jcab; Jun 4, 2006 at 11:23 AM.
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Elder User
Joined: Sep 2003
Posts: 892
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From: Quinton NJ
hey thanks j cab i worked on her yesterday and unclamped everything and cut out wooden wedges out of a 2x4 and hammered them in between the firewall and the pipe. it still tweaked with the torque of the engine.it took a few tries to get it to stay but it still rubs every once in a while when i drive in our fields with ruts and such. anyone else have a similar problem with this? any info would be appreciated
Elder User
Joined: Jun 2005
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From: Greater Floyd Area, AR
Talk to 1996pwrstrk he had the same problem. I'm not sure how he fixed it. I didn't have any trouble. I did mine when the engine was out. sawzall in three places and a 5# sledge took real good care of it. 
jimbo
jimbo
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Fleet Mechanic
Joined: Oct 2003
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From: CentralEastern Utah
My 94 was like that. I had to change the motor mounts. They were worn out and let the engine rock too much. Helped quiet it down some also.
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Senior User
Joined: Oct 2004
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2x4 pry bar
I used a 2x4 about 2 or 3 feet long, with the downpipe installed loosely. Using the 2x4 between the downpipe, and the firewall gives you plenty of leverage to pry open up that area for more room. When all else fails, do it the caveman way! Jcab
Originally Posted by Gobstopper909
hey thanks j cab i worked on her yesterday and unclamped everything and cut out wooden wedges out of a 2x4 and hammered them in between the firewall and the pipe. it still tweaked with the torque of the engine.it took a few tries to get it to stay but it still rubs every once in a while when i drive in our fields with ruts and such. anyone else have a similar problem with this? any info would be appreciated
Senior User
Joined: Oct 2004
Posts: 404
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Motor Mounts Secure?
HAVE YOU ANY LOOSE MOTOR MOUNTS, SOUNDS LIKE YOU MIGHT HAVE SOMETHING LOOSE DUE TO THE MOVEMENT OF THE ENGINE YOU ARE TALKING ABOUT. IF THE CLAMPS ARE IN THE WAY SPRAY SOME WD-40, AND DISCONNECT EVERY THING EXCEPT THE DOWNPIPE, AND WORK BACK FROM THE TURBO. PATIENCE IS A VIRTUE, AND IT WAS A PAIN FOR ME WHEN I INSTALLED MINE. FIREWALL SHOULD MOVE ENOUGH TO MOUNT DOWNPIPE ON TURBO. JCAB
Originally Posted by Gobstopper909
yeah im not sure what to do...but the direction the dp has to go is blocked by the engine..i tried everything and now its gettin hard to adjust because of the stupid u clamps
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Elder User
Joined: Sep 2003
Posts: 892
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From: Quinton NJ
thanks for the replies...Well JCAB I wound up taking out from the top of the downpipe to the deleted cat and i seen where she was rubbing..i realized that i didnt cut enough of the lip and push it in far enough. I didnt have a big enough prybar so my buddy has a porta power and that took care of her real nice. I put her together and shes perfect!! thankd for all the help fellas!!!! A+