Fabricating Your Own High Performance Cone Pipe
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  1. #1
    Top Dog JC-SuperJet's Avatar
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    Fabricating Your Own High Performance Cone Pipe

    Upon hearing that one of my favorite Two-Stroke Heroes, Tim Tynan of TNT Performance, Master Two-Stroke Engine and Master Cone Pipe Builder will no longer fabricate those super cool exotic Cone Pipes, it's time to find talented new Craftsmen, Machinists and Welders that can carry the Torch for the next generations.

    To this endeavor, I'm sharing the following:

    Since the hardest part of Cone Pipe Fabrication is rolling the flat sheet metal into Cones(an Art in itself and very time-consuming), you can order them ready made at http://www.coneeng.com/conical_products.html

    Also from Cone Engineering : Cone & Megaphone List and Price.pdf Custom Cone Request (worksheet).pdf

    Pipe Tuned Length Design Nomograph: Exhaust_nomograph 1.pdf

    Pipe Design Software: https://buildandclick.com/html/tuned_pipe.html

    Flat Cone Template Calculator: http://craig-russell.co.uk/demos/cone_calculator/

  2. #2
    PWCToday Newbie rhyno857's Avatar
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    Re: Fabricating Your Own High Performance Cone Pipe

    Awesome post! I've been thinking of making a custom pipe for a 750 build I'm planning and this should help the design a lot.

  3. #3
    Top Dog JC-SuperJet's Avatar
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    Re: Fabricating Your Own High Performance Cone Pipe


  4. #4
    Top Dog JC-SuperJet's Avatar
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    Re: Fabricating Your Own High Performance Cone Pipe

    Another way of fabricating a Pipe is called Hydro-Forming.

    It involves making the Chamber out of two flat pieces, welding them together and pressurizing the flat Chamber to its final round shape. You could make a B Mod Chamber this way.

    Same method is used to repair dented Pipes.

    https://www.youtube.com/watch?v=bCsg5pQimWI

    https://www.youtube.com/watch?v=syHNyBagRlk

    Instead of a Pressure Washer, you can use a Manual Hydrostatic Test Pump:http://perfectoproducts.net/hydro-static-test-pumps/

  5. #5
    PWCToday.com Is My Home Away From Home WFO Speedracer's Avatar
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    Re: Fabricating Your Own High Performance Cone Pipe

    Have you ever priced the cones from cone engineering, I have they are ridiculous , you would go broke very quickly on a pipe design such as TNT pipe.
    Last edited by WFO Speedracer; 10-23-2018 at 08:20 AM.
    Y'all know me, still the same O.G. but I been low-key
    hated on by most these &^$$@s with no cheese, no deals and no G's, no wheels and no keys, no boats, no snowmobiles, and no skis, mad at me cause I can finally afford to provide my family with groceries

    WWSRD , What would Speed Racer do ?

  6. #6
    Top Dog JC-SuperJet's Avatar
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    Re: Fabricating Your Own High Performance Cone Pipe

    I included the Price List for all to see. Just posting different ways of fabricating Pipe Chambers for any enterprising Craftsmen.

    Cones are rolled manually and take a lot of skill and time to make. Either pay for pre-fab Cones or spend the Time making them. Time = Money. No free Lunch...

    Cheapest method of fabrication is the Hydro-Forming Method, once one figures out how to size the Template for the correct final size and shape.

  7. #7
    I dream skis DeMan686's Avatar
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    Re: Fabricating Your Own High Performance Cone Pipe

    Sweet thanks for the Information.


    Sent from my iPhone using Tapatalk

  8. #8
    PWCToday Newbie
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    Re: Fabricating Your Own High Performance Cone Pipe

    Thanks for sharing this post.

  9. #9
    PWCToday.com Is My Home Away From Home theVetteman3's Avatar
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    Re: Fabricating Your Own High Performance Cone Pipe

    There is some really good info here! Thanks for posting!
    1985 JS550/800 "Pretty Red": Newmiller 800, Rhaas 750 pump conv. [56.3mph gps]
    2009 1100 SJ:
    Kawi 1100 build in progress
    2009 SJ MINT:
    KP steering adaptor, Worx 228 intake, PWR ride plate [47.3mph gps]
    1987 WJ650:
    6M6, JD Intake Grate, 17/20, Coffmans Sizzler [48.5mph gps]
    1994 XiR: 830cc Superstock, PJS side draft, 13/18 swirl [53.7mph gps]
    1995 SJ MINT:
    Worx 205 intake [42.5mph gps]



  10. #10
    Top Dog JC-SuperJet's Avatar
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    Re: Fabricating Your Own High Performance Cone Pipe

    Here's another way to make Exhaust Chambers.

    For making small economical Sheet Metal Stamping batches, Rubber Pad Forming is the way to go.

    You can make your own Rubber Pad Former with just a Harbor Freight Hydraulic Press and a couple of thick Rubber Pads.

    Here are some Links to Rubber Pad Forming (aka vintage sheet metal stamping) to make your Pipe Chamber Halves:

    https://www.youtube.com/watch?v=xw5yEMsDxR8

    https://www.instructables.com/Protot...r-pad-forming/

    https://hackaday.com/2017/10/20/low-...t-metal-parts/

    https://en.m.wikipedia.org/wiki/Rubber_pad_forming

    https://psiurethanes.com/standard-urethane-sheeting/

    https://beckwoodpress.com/applicatio...-hydroforming/

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