Torque cones yay or nay
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Road Master
Joined: Aug 2010
Posts: 770
Likes: 3
From: Wabash
Torque cones yay or nay
I own a 98 custom softail.......I am installing a set of V&H Drag pipes because that look and sound will compliment the theme I have going with my bike.......my friend insists that torque cones will increase performance ......the pipes are 2" OD @ 40" long.....I hear some agree that the cones increase back pressure......chanel the sonic pulse back out of the pipe and help keep the mid range power curve from dropping off into snoozville.......looking for your input or stories and expierences with or without cones.
Yay oe Nay?
Yay oe Nay?
Former Sponsor
Joined: Jan 2009
Posts: 19,364
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From: Los Angeles, CA
Get some Big City thunder baffles. The pipes will still be plenty loud and the bike will have much more low end than without any baffles at all. I ran torque cones in my Samson fishtails. It is hard to say if there was a difference with or without them, but they will keep the exhaust from reverting back into the head.
Drew
Drew
Stellar HDF Member
Joined: May 2009
Posts: 2,856
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From: Middle of Kansas
I have 1-3/4" drag pipes on my 99 Softail Custom, and I drilled 1/4" holes about 3" from the end of the pipe at about 8 oclock, and then cut some angle shelf brackets I had so when they are bolted in the pipe there is a stub about an 1' long sticking up in the pipe about 8 inches from the end. It does not take much as my brackets are only about a 1/2" wide and even have a hole in the end that sticks up. It does quiet the pipes a little, but the sound is almost the same except for decel which does reduce the razz sound you get with drag pipes. It did help the lower end torque, and the bike runs good every where with no dead spots.
Some just put 1" thumb screws in the back of the pipe, and I tried that, but it made a sound I did not like. If you get the restriction 8" or more forward of the end of the pipe, it will sound just the same only a little more quiet. I have no experience with torque cones, so can't help you there.
Some just put 1" thumb screws in the back of the pipe, and I tried that, but it made a sound I did not like. If you get the restriction 8" or more forward of the end of the pipe, it will sound just the same only a little more quiet. I have no experience with torque cones, so can't help you there.
Extreme HDF Member
Joined: Sep 2006
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Nay...They go in the wrong end of the pipe to do any good...People chasing power want exaust coming outta that hole, not something plugging it up...A better option is a set of cheapo shorty baffles, a pair of home made lollipop baffles, or even a 1/4" bolt simple stuck in the last 6 inches or so of pipe.
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Road Master
Joined: Aug 2010
Posts: 770
Likes: 3
From: Wabash
Just saw an independant study that dyno'd 12 different bikes three different engines 4 different sets of cones......it showed that they did nothing at all. Seems like a waste of money.
Extreme HDF Member
Joined: Sep 2006
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I believe it, but you still have guys that swear that their butt dyno tells 'em they work wonders.
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Ultimate HDF Member
Joined: Jun 2007
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From: Richmond, VA
They work and they work well. Think garden hose effect. Turn the water on and look at the end of a hose. Then put mama's spray nozzle on the end of the hose and do the same thing. Thats the difference the cones make. Exhaust velocity is a good thing in open pipes, as well as the anti reverb effect. I installed a set of drags this years and tested all three options. Open, torque cones, lollipops and a combo of those two. The cones worked the best on my 2 inch, 40 inchers. They absolutely work. Anyone who tells you they don't is either repeating internet drivel or simply has never had a set because they believe internet drivel. NOW, don't think for one second that drags with torque cones are the best, most efficient exhaust....because it isn't. Thats not what I am trying to imply. What I am saying is that once make make the decision to run drags for whatever reason, that torque cones WILL improve the performance over running them straight through. Thats all I'm saying.
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Seasoned HDF Member
Joined: May 2005
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From: Georgia
They work and they work well. Think garden hose effect. Turn the water on and look at the end of a hose. Then put mama's spray nozzle on the end of the hose and do the same thing. Thats the difference the cones make. Exhaust velocity is a good thing in open pipes, as well as the anti reverb effect. I installed a set of drags this years and tested all three options. Open, torque cones, lollipops and a combo of those two. The cones worked the best on my 2 inch, 40 inchers. They absolutely work. Anyone who tells you they don't is either repeating internet drivel or simply has never had a set because they believe internet drivel. NOW, don't think for one second that drags with torque cones are the best, most efficient exhaust....because it isn't. Thats not what I am trying to imply. What I am saying is that once make make the decision to run drags for whatever reason, that torque cones WILL improve the performance over running them straight through. Thats all I'm saying.
Last edited by back again; Sep 10, 2010 at 04:36 AM.
Ultimate HDF Member
Joined: Jun 2007
Posts: 9,193
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From: Richmond, VA
I'm not repaeting any internet drival.I tried them on my evo sportster build and they sucked 10 horsepower out of the motor on the dyno.While they might work on your 80" evo they sucked on my Sportster.We ended up getting the most horsepower with a homemade lollipop.5/16 bolt welded to a 1 1/2 fender washer.Mounted 8" into the pipe and being turned about45*.Absolutley no decell pop from any rpm.
Its not to hard to imagine that sticking a cork in the head of an exhaust pipe might harm top end horsepower.
Last edited by bikerlaw; Sep 8, 2010 at 09:47 PM.