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Addicted to American Iron
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Discussion Starter · #1 ·
Bought a pair and put them in took me under 30 minutes.....ran the bike but not hard as it only has 400 miles on new performance build. I think I can feel a difference in the seat of the pants but unsure.

Anyone actually used them before and has some input as to what they think good or bad about them??
 

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IronButt
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Well you did not list much info on your current set up but they can help with some set ups but really the restricion they offer is in the wrong area, they bottle neck the port for a short legnth , building more heat in the chamber. Look at most systems you will find that the restriction is not at the mouth of the pipe but else where and a longer legnth of restriction.

I have seen them help with true drag pipes on shovels but then again I doubt your are riding a shov.
 

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davemhughes said:
Bought a pair and put them in took me under 30 minutes.....ran the bike but not hard as it only has 400 miles on new performance build. I think I can feel a difference in the seat of the pants but unsure.

Anyone actually used them before and has some input as to what they think good or bad about them??
I tried a set of torque cones with my last 2-2 exhaust. I couldn't feel any difference at all. The difference on the dyno was barely noticable... and within the range of standard deviation for the dyno. From those results, I can say that they are pretty much a waste of money. The real difference (major!) was when I switched to a 2-1 system. Like night and day! :)
 

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My understanding is that torque cones help mostly on exhaust that don't offer good back pressure. As HDW mentioned, drag pipes are a prime example. A properly tuned bike/exhaust shouldn't need them.
 

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Addicted to American Iron
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Discussion Starter · #5 ·
Thanks so much......as soon as I read the Posts I ran out to the garage and pulled those cones out. The very last thing I want on this motor is more heat in the chamber.

HDWRENCH asked about the build:

95ci .020 over
Mahle High Domed pistons (coated)
Heads: (Big Al) Level 3 port / decked / double plugged / chamber re-shaped / comp releases
Valves : Ferrea Hollow stem 2.0 intake / exh 1.615 /Ferrea guides/ springs/ retainers / 5 angle grind
Rivera Billet rocker support plate (HDWRENCH)
Ultima roller rockers (HDWRENCH)
S&S chrome moly adj pushrods
Feuling Super pump
Feuling lifters
Timken bearings
Cams: custom grind on Andrew's blanks....635 lift 258 intake 260 exh
4 degree advance outer cam gear
Billet Cam support plate
Dyna TwinFire DC9-2 30k volt coil (4 pole)
Scott graphite plug wires
Dyna TC88-2 Adj ignition module
Mik 45 with ported intake manfold
K&N Filter
Exhaust: V&H Big Radius....I know their a power killer (Looking for 2-1 right now)
6 speed trans
Kevlar clutch pack with heavy spring
30T front pulley
1.6kw starter to turn this beast
Running Sunoco GT Plus Unleaded Fuel (104 oct)
Misc...odds and ends

And lastly: One Pissed Off Wife

Currently putting together a Torque build on my 2002 Ultra
 

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Live Long and Prosper
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I ran a set for a few weeks on a 95" build with D&D Fatcat exhaust. To make a long story short, it was my PCIII USB that was the culprit. Got it fixed and had to take the cones out to get it to run right. I for one do think they make more heat in the motor because of the restriction.
 

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davemhughes said:
Thanks so much......as soon as I read the Posts I ran out to the garage and pulled those cones out. The very last thing I want on this motor is more heat in the chamber.
Good idea! Get a properly tuned set of 2-1 pipes (w/ 1.75" diameter head pipes) and you will be able to tap into all the torque the engine has to offer. And YES, you are losing a LOT of torque with your current pipes! :)
 

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springer- said:
My understanding is that torque cones help mostly on exhaust that don't offer good back pressure. As HDW mentioned, drag pipes are a prime example. A properly tuned bike/exhaust shouldn't need them.
Yes, they help reduce reversion. That's about it. :)
 
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