Texas X Riders

Please login or register.

Login with username, password and session length
Advanced search  

Author Topic: Back pressure cones  (Read 1261 times)

0 Members and 1 Guest are viewing this topic.

Boogie

  • Master Tejano Rider
  • *****
  • Posts: 809
  • GULF OF MEXICO
Back pressure cones
« on: February 11, 2009, 07:58:49 PM »
 I had to have my carb rebuilt (so the dealer said $159 later)
 Anyway, the X is running good but I think I have lost a little of the punch since I added the Roadhouse slip on's.
 A wrench said I might need to install something to increase the back pressure,
I researched Power Cones and one site said power cones are only used to keep exhaust gases from backing up into the engine,  ???
So I looked up Torque Cone's, ( they look the same as power cones) The site said this will increase the back pressure to increase torque,
funny thing is I can't find them for a VTX, but there are alot for an HD.

I called HDL and they have nothing.

If anyone has had any dealings with this issue I would appreciate a little feed back.

« Last Edit: February 11, 2009, 08:34:44 PM by Boogie »
Logged
                      Native Texan, I ride a steel horse

larry_357

  • Texas X Rider OverLord
  • ******
  • Posts: 2463
Re: Back pressure cones
« Reply #1 on: February 12, 2009, 05:39:11 AM »
  Call Mortons they make them for their custom exausts and might fit yours or give you more information on how to help you out.
Logged
Alvin,Texas

hipshot

  • Texas X Rider OverLord
  • ******
  • Posts: 2795
  • New Caney, TX
Re: Back pressure cones
« Reply #2 on: February 12, 2009, 07:26:10 AM »
Build your own. Weld a large washer (like a fender washer) to a stud. Drill your pipe for the stud and lock it in place with nuts. You can adjust it by loosening the nuts and rotating the washer.
Logged
02 1800C

Luckys Lover

  • Texas X Rider OverLord
  • ******
  • Posts: 1794
  • My other addiction
Re: Back pressure cones
« Reply #3 on: February 12, 2009, 01:42:33 PM »
Don't get no ideas, Lucky. I don't look good with a maytag stuck to my a$$. :rofl:
Logged
If stupidity got us into this mess, why can stupidity get us out of it? Will Rogers
I don't care what other people think. They don't do it very often!
Of Course it's dirty. It's hard to clean when the tires keep moving.

tom cat

  • Texas X Rider OverLord
  • ******
  • Posts: 1192
Re: Back pressure cones
« Reply #4 on: February 12, 2009, 02:53:25 PM »
I have done what Hip Shot is talking about. It may give away my age but it was on a  Honda 305 Dream. It worked well. 
Logged

hooter

  • Master of Monumental Proportions
  • *******
  • Posts: 4337
  • Itasca (just North of Hillsboro on sceanic I-35W)
Re: Back pressure cones
« Reply #5 on: February 12, 2009, 08:05:36 PM »
I had'um on my Honda 305 scrambler    :cool2:
Logged
What I do today is very important because
I traded a day of my life for it.

Whatever you want to do, do it now.
  There are only so many tomorrows.

johnnycheese

  • Old Timer
  • ****
  • Posts: 143
Re: Back pressure cones
« Reply #6 on: February 13, 2009, 09:44:30 PM »
be careful
I did a HD BIG motor wed nighy he had a 2-1 D&D no baffle and he did the washer trick different sizes on an adjustable threaded rod.
let me say this ..............
SIZE AND LENGTH DOES matter.
with one adjustment a 7# drop in torque :ohwow:
Logged
Johnnycheese tuning center
512-767-4273
Builder and tuner of the fastest NA bike in Texas

Crewsn

  • Texas X Rider OverLord
  • ******
  • Posts: 1038
  • leander(austin), texas
Re: Back pressure cones
« Reply #7 on: February 13, 2009, 10:53:06 PM »
instead of the washer and stud I used an eyebolt. been in there for almost 2 1/2 years. definetly made a difference after adding my roadhouse slip-on. you just twist the eyebolt to diffent angles until your happy. heres a couple of pics.



Logged
03 1800 C, airbox mod, K&N filter, roadhouse shorty.

Boogie

  • Master Tejano Rider
  • *****
  • Posts: 809
  • GULF OF MEXICO
Re: Back pressure cones
« Reply #8 on: February 14, 2009, 09:40:10 PM »
Quote from: Crewsn on February 13, 2009, 10:53:06 PM
instead of the washer and stud I used an eyebolt. been in there for almost 2 1/2 years. definetly made a difference after adding my roadhouse slip-on. you just twist the eyebolt to diffent angles until your happy. heres a couple of pics.





Wow I can't believe that really works, Thanks for the idea!
Logged
                      Native Texan, I ride a steel horse

Crewsn

  • Texas X Rider OverLord
  • ******
  • Posts: 1038
  • leander(austin), texas
Re: Back pressure cones
« Reply #9 on: February 15, 2009, 09:22:22 PM »
it works, i read about it on another forum. lot of guys with the drag pipes are using this method. you could even use a bigger eyebolt if you like. good luck and ride safe.
Logged
03 1800 C, airbox mod, K&N filter, roadhouse shorty.

Txcajun

  • Texas X Rider OverLord
  • ******
  • Posts: 1027
Re: Back pressure cones
« Reply #10 on: February 15, 2009, 09:48:25 PM »
The thunder monster baffles come wih the venturi ring made into them. :thumbup: It is similarto the eye bolt in Jeremy's pics.
Logged
Les Coullion Coup d'e'tat peux Embrasse Moi Tchew!              03 1800 retro TRAILER QUEEN EXTRORDINAIRE "SMELL THE BUMPER"
 
SimplePortal 2.3.3 © 2008-2010, SimplePortal