Collecter Tethers?

strange1 · 09-19-2013, 09:50 AM

The headers on my stock eliminator car are one piece. However, I use an extension/reducer that bolts to the flange. Am I required to install a tether?

Any information/insight is appreciated,

Robert Strane
Stk 2061

gsa612 · 09-19-2013, 10:08 AM

Good question, I would say yes, seeing you can't have the collector bolted to the pri. pipes with tabs, they have to be stitch welded.You might have to weld the 2 flanges together,making it 1 piece.Give the tech dept. a call.

Mike Gray · 09-19-2013, 11:57 AM

Now things are getting carried away,
I read that as he has a collector extension bolted to the flange, not the primary tube tabs.
Is this the typical street style 3 bolt flange at the end of a collector?

drgrcr1156 · 09-19-2013, 12:13 PM

Can't the bolts on his extensions loosen and fall off like on the primary
tube tabs?

gsa612 · 09-19-2013, 12:26 PM

Quote:

Originally Posted by drgrcr1156

Can't the bolts on his extensions loosen and fall off like on the primary
tube tabs?

Your chances are better to win the Powerball, than that happening. lol..

Mike Gray · 09-19-2013, 05:11 PM

Hope you don't need the 36" tethers instead of the 10", 15" or 20" ones.
They are $50.00 more for an extra 32" of stainless 1/8" cable that sells in bulk for less than .50 cents a foot.
surprisingly the 10", 15" and 20" all cost the same

strange1 · 09-20-2013, 08:32 PM

Quote:

Originally Posted by drgrcr1156

Can't the bolts on his extensions loosen and fall off like on the primary
tube tabs?

Yes they can, however, per NHRA we have them jam nutted so that happening is not probable. They are bolted to a street style three bolt flange. My concern is finding a company that makes the rings in which the tethers attach too in a large enough diameter to go around the three inch header and extension. I could make something work, but NHRA is mandating the use of a particular brand that they have approved, thus, making this more problematic.

Robert Strane
Stk 2061

gsa612 · 09-19-2013, 12:23 PM

Quote:

Originally Posted by Mike Gray

Now things are getting carried away,
I read that as he has a collector extension bolted to the flange, not the primary tube tabs.
Is this the typical street style 3 bolt flange at the end of a collector?

That's the way I read it.

strange1 · 09-20-2013, 08:35 PM

Quote:

Originally Posted by gsa612

Good question, I would say yes, seeing you can't have the collector bolted to the pri. pipes with tabs, they have to be stitch welded.You might have to weld the 2 flanges together,making it 1 piece.Give the tech dept. a call.

Welding the two flanges would be the easiest way, but it would make it difficult to remove the headers. It may even make them impossible to remove as I have not tried to remove them with the extensions on.

Robert Strane
Stk 2061

T Ketels · 09-23-2013, 08:42 AM

I wonder if it would be legal to use v-band type flanges and clamps at each junction much like boosted cars run on the hot and cold side of their induction/exhaust systems. Surely with a welded v-band flange and clamp on the end of my collector where it goes into the extension, this would not require a tether - or would it?

Tim

09-19-2013, 09:50 AM	#1
strange1 Junior Member Join Date: Apr 2010 Location: Alabama Posts: 75 Likes: 0 Liked 0 Times in 0 Posts	Collecter Tethers? The headers on my stock eliminator car are one piece. However, I use an extension/reducer that bolts to the flange. Am I required to install a tether? Any information/insight is appreciated, Robert Strane Stk 2061

09-19-2013, 10:08 AM	#2
gsa612 Senior Member Join Date: Jan 2008 Location: 100th Meridian Posts: 569 Likes: 116 Liked 280 Times in 139 Posts	Re: Collecter Tethers? Good question, I would say yes, seeing you can't have the collector bolted to the pri. pipes with tabs, they have to be stitch welded.You might have to weld the 2 flanges together,making it 1 piece.Give the tech dept. a call. Last edited by gsa612; 09-19-2013 at 10:10 AM.

09-19-2013, 11:57 AM	#3
Mike Gray Senior Member Join Date: Oct 2006 Posts: 610 Likes: 304 Liked 679 Times in 193 Posts	Re: Collecter Tethers? Now things are getting carried away, I read that as he has a collector extension bolted to the flange, not the primary tube tabs. Is this the typical street style 3 bolt flange at the end of a collector?

09-19-2013, 12:13 PM	#4
drgrcr1156 Junior Member Join Date: May 2010 Location: Massachusets Posts: 91 Likes: 0 Liked 2 Times in 1 Post	Re: Collecter Tethers? Can't the bolts on his extensions loosen and fall off like on the primary tube tabs?

09-19-2013, 05:11 PM	#6
Mike Gray Senior Member Join Date: Oct 2006 Posts: 610 Likes: 304 Liked 679 Times in 193 Posts	Re: Collecter Tethers? Hope you don't need the 36" tethers instead of the 10", 15" or 20" ones. They are $50.00 more for an extra 32" of stainless 1/8" cable that sells in bulk for less than .50 cents a foot. surprisingly the 10", 15" and 20" all cost the same

09-23-2013, 08:42 AM	#10
T Ketels Junior Member Join Date: Jul 2005 Location: Dyersville, Iowa Posts: 52 Likes: 0 Liked 0 Times in 0 Posts	Re: Collecter Tethers? I wonder if it would be legal to use v-band type flanges and clamps at each junction much like boosted cars run on the hot and cold side of their induction/exhaust systems. Surely with a welded v-band flange and clamp on the end of my collector where it goes into the extension, this would not require a tether - or would it? Tim __________________ SS/MA 5017