Flex exhaust pipe
Thread Starter
Drifting
Joined: May 2004
Posts: 1,258
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From: Huntsville Alabama
Flex exhaust pipe
Has anyone ever used that flexable exhaust pipe that places like advance auto parts sell. It comes in 8 foot section and is made by walker exhaust (dynomax).
Race Director
Joined: Jan 2000
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From: Corsicana, Tx
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Bad news...looks cheesy and is not very conducive to flow. Best left to diesel trucks.
JIM
JIM
Melting Slicks
Joined: Sep 2001
Posts: 2,501
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From: Sunshine State, USA
Senior Member
Cruise-In V Veteran
Yes, and some use it as a "template" to get the pipe in the correct shape with all the bends first, and then have a muffler shop bend a solid piece to match for the permanent installation.
Thread Starter
Drifting
Joined: May 2004
Posts: 1,258
Likes: 0
From: Huntsville Alabama
What type of clamp would be good to use. Right now the car has a 2.25in system on it and what happened was the header would keep leaking where the exhaust meets the exhaust shop made some kind of buldge that the flage would press fit in to the header when you bolted it together. This did not work the exhaust kept comping lose at the header becuase the flange would come off. So i cut that part off and got some reducers and the exhaust pipe slides in it but there is about a 1/4 inch gap. I was going to get it weled up but its close to the floor pan and if i have it welded i will not be able to remove the exhuast. So what type of clamp would be good. i tried the u bolt style you get at the parts store with no luck it just crushed the pipe.
Race Director
Joined: Jan 2000
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From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
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Try a band type.
http://store.summitracing.com/partde...5&autoview=sku
I use them on mine...makes uncapping at the track a cinch.
JIM
http://store.summitracing.com/partde...5&autoview=sku
I use them on mine...makes uncapping at the track a cinch.
JIM
Thread Starter
Drifting
Joined: May 2004
Posts: 1,258
Likes: 0
From: Huntsville Alabama
i thought about those but the problem is that the pipe is kind of offset in side the other pipe and i am affraid that that type of clamp might not seal it due to it being off set inside the pipe.
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Safety Car
Joined: Feb 2006
Posts: 4,855
Likes: 2
From: Columbia South Carolina
What type of clamp would be good to use. Right now the car has a 2.25in system on it and what happened was the header would keep leaking where the exhaust meets the exhaust shop made some kind of buldge that the flage would press fit in to the header when you bolted it together. This did not work the exhaust kept comping lose at the header becuase the flange would come off. So i cut that part off and got some reducers and the exhaust pipe slides in it but there is about a 1/4 inch gap. I was going to get it weled up but its close to the floor pan and if i have it welded i will not be able to remove the exhuast. So what type of clamp would be good. i tried the u bolt style you get at the parts store with no luck it just crushed the pipe.
Thread Starter
Drifting
Joined: May 2004
Posts: 1,258
Likes: 0
From: Huntsville Alabama
thats what i was looking for is something like that. does it work well are there any leaks? Also what size of flex tubing and clamps did you use.
Last edited by Silver00V6Camaro; Jan 22, 2008 at 12:23 PM.
Safety Car
Joined: Feb 2006
Posts: 4,855
Likes: 2
From: Columbia South Carolina
these tend to get loose when the system heats up causing the muffler to sag a little it is hard to get teh tips to stay level but welding should fix all this.
the first pic doesnt actually show what I thought it did, you can disregard it.
Last edited by 454_71Stingray; Jan 22, 2008 at 12:26 PM.
Safety Car
Joined: Feb 2006
Posts: 4,855
Likes: 2
From: Columbia South Carolina
It is 2 1/2" all the way through, it was a "slip fit" over the reducer at the header but I had to use the band clamp type to attach the mufflers because they were exactly the same size as the flex tube.
Advanced
Joined: Dec 2006
Posts: 72
Likes: 0
From: mobile alabama
flex pipe system
Yes I have a 2 1/2" flex pipe setup from the headers back to the mufflers. I built a h-pipe from tubing , had it welded and ground smooth. does it look good? to some, does it work? sounds great and performance is good. system was a temp fix until I can afford a mandrel bent 2 1/2" system. I have a few minor leakage and used regular clamps. Here in alabama rust is not a issue and the car never sees rain. I forgot to mention it scrapes when I hit a dip in the road because my vette is lowered. have 3" clearance under pipes.
Tom
Tom
Drifting
Joined: Oct 2007
Posts: 1,458
Likes: 1
From: Collinsville MS
St. Jude Donor '08
I did the exact same setup on a pick up truck that I restored a couple of years ago. Mainly did it to get it to the muffler shop, but it worked so well I decided to leave it and welded it to the collectors. About a year later it split and broke in two and the pipe hit the ground at 80mph. Dont trust them at critical points in your system, the ridges will start rusting and possibly break like mine did.
Race Director
Joined: Nov 2002
Posts: 12,142
Likes: 54
From: Taylor Michigan
That flexible pipe is a temporary fix at best. I use to sell loads of it. Here in Southeastern Michigan the fact that there are no restrictions as to what can be used on cars or safety inspections anything goes. There are more junks on the road here than in the junk yards. They merely drive them into the ground here and when they quit or fall apart just walk away. 
Melting Slicks
Joined: Dec 2006
Posts: 2,483
Likes: 1
From: Bay Area CA
It's good to create a template for the muffler guys.