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Thread: Cored Pipes. How did you do it?

  1. #16
    apriliaforum Junkie
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    It cost me around $200 CDN to do mine! haha.


    Doesn't pay to sell them I guess. It's not exactly easy work either.
    2005 RSV1000R
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  2. #17
    apriliaforum Member racerr900's Avatar
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    parts in U.S.

    You can get the rivets from a local hardware store and get the perforated tubing from Area P in California. Just google Area P. The packing is not hard to find in the U.S. In fact Area P carries the Silent Sport packing along with the tubing!!
    Kevin Stover
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    00 R-6

  3. #18
    apriliaforum member scott2ride's Avatar
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    Good write up.
    But you could have saved a LOT of time and done a search as there are several comprehensive write ups with all the specs you need, pics, and info on the effects of shortening the pipes too.

    Do search on 'core your Pipes' for title only
    ScottyDog

    Official Aprilia Linkage Tester !

    In The Garage

    1. Tuono V4 1100 RF, stock gearing, Austin Racing GP2R pipe, Race ECU, heated grips, CRG Bar End mirrors, Hepco-Becker sports Rack with Givi Top box when touring, Intercom to both give and receive abuse, Nitrous kit, super charger, shitty Chinese folding levers & a flashy sticker that makes me faster...

    2. Maserati Granturismo S 4.7L MC F1 Gearbox

    3. Land Rover Discovery Sport

  4. #19
    apriliaforum expert mossback's Avatar
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    Like Scott said. Use the Search feature.


    You can save a lot of time and trouble by drilling around the CAT, not hammering it. Also to remove the CAT end cap use the handle of a floor jack using the weight of the can to remove it.

    you can see photos on my website: www.fathairychicks.com


    Quote Originally Posted by scott2ride View Post
    Good write up.
    But you could have saved a LOT of time and done a search as there are several comprehensive write ups with all the specs you need, pics, and info on the effects of shortening the pipes too.

    Do search on 'core your Pipes' for title only
    There is no better place to find good advice about life, business dealings and fear than from people who have gone through it before.

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  5. #20
    apriliaforum Member jetblack3s's Avatar
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    it took me 10 mins to take out both cat, pm me if you have any question.

  6. #21
    apriliaforum expert mossback's Avatar
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    How is that done?
    There is no better place to find good advice about life, business dealings and fear than from people who have gone through it before.

    IT Services

    RED 2004 RSV1000R
    PCIII usb custom map
    Full Arrow headers and Ti slipons
    Michelin Power One tires
    MotoBit's rearsets
    16\43 gearing
    F.Fabrri double bubble
    Removed Flywheel
    Showa forks with Ohlins internals - Thompson Suspension
    Ohlins Steering dampner
    Ohlins rear shock
    36,000 miles
    New timing chains.
    1:35's at Pacific raceways
    2:12's at Miller Motorsports AMA track

  7. #22
    apriliaforum expert mossback's Avatar
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    The LA choppers site only sells 40% open area which is why they will make for harsher sound than the 60% I sell. I have the 60% custom rolled and tack welded out of good quality stainless intended for the marine industry. The rivets you need are structural blind end rivets at 3\16" size.

    I have both.
    There is no better place to find good advice about life, business dealings and fear than from people who have gone through it before.

    IT Services

    RED 2004 RSV1000R
    PCIII usb custom map
    Full Arrow headers and Ti slipons
    Michelin Power One tires
    MotoBit's rearsets
    16\43 gearing
    F.Fabrri double bubble
    Removed Flywheel
    Showa forks with Ohlins internals - Thompson Suspension
    Ohlins Steering dampner
    Ohlins rear shock
    36,000 miles
    New timing chains.
    1:35's at Pacific raceways
    2:12's at Miller Motorsports AMA track

  8. #23
    apriliaforum Member jetblack3s's Avatar
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    Quote Originally Posted by mossback View Post
    How is that done?
    what you need:
    a powerful drill
    a good big drill bit(just drill around the cat, make sure it goes all the way through)
    and couple of bang and you be right there....

    i don't know if now one would be easier to take out, mine only has like 300 miles on it.

  9. #24
    apriliaforum expert mossback's Avatar
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    Exactly. This is how I remove the CATs vs. Chisel or screw driver. Use a floorjack's handle to easy the pound out after drilling.

    Use a long 3/8" drill bit and an electric drill, you may want to pick up extra, they will snap if you rush the job. If the bit gets dull you will have to push very hard to get it to drill through. I have a bit sharpener that helps a great deal when the bit gets dull.

    Lately I have been leaving the CAT's in lately to trim the sound output a few db's.





    Quote Originally Posted by jetblack3s View Post
    what you need:
    a powerful drill
    a good big drill bit(just drill around the cat, make sure it goes all the way through)
    and couple of bang and you be right there....

    i don't know if now one would be easier to take out, mine only has like 300 miles on it.
    Last edited by mossback; 04-03-2008 at 11:50 PM.
    There is no better place to find good advice about life, business dealings and fear than from people who have gone through it before.

    IT Services

    RED 2004 RSV1000R
    PCIII usb custom map
    Full Arrow headers and Ti slipons
    Michelin Power One tires
    MotoBit's rearsets
    16\43 gearing
    F.Fabrri double bubble
    Removed Flywheel
    Showa forks with Ohlins internals - Thompson Suspension
    Ohlins Steering dampner
    Ohlins rear shock
    36,000 miles
    New timing chains.
    1:35's at Pacific raceways
    2:12's at Miller Motorsports AMA track

  10. #25
    apriliaforum Junkie 300lbGorilla's Avatar
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    Quote Originally Posted by mossback View Post
    Lately I have been leaving the CAT's in lately to trim the sound output a few db's.
    Any idea what this does for the power output? Does it choke it at all? Is it worth punching a couple holes in the cat or is that gonna make things worse rather than better?
    I am so proud of all this stuff I've bought. Let me list it here so you will be impressed.

  11. #26
    apriliaforum expert mossback's Avatar
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    Quote Originally Posted by 300lbGorilla View Post
    Any idea what this does for the power output? Does it choke it at all? Is it worth punching a couple holes in the cat or is that gonna make things worse rather than better?
    No the power output might be put off by fraction of HP when measured on a dyno. Consider that the exit nozzle is 72mm and most after market cans run about 58mm + -. A cat is mostly open space when measured in relationship to it's volume.

    Try it and if you want more, knock it out.

    It's tougher to go back. When I work on my bike in the garage, I press the CATs back into the exit nozzles to soften the noise for my neighbors...
    Last edited by mossback; 04-04-2008 at 02:09 AM.
    There is no better place to find good advice about life, business dealings and fear than from people who have gone through it before.

    IT Services

    RED 2004 RSV1000R
    PCIII usb custom map
    Full Arrow headers and Ti slipons
    Michelin Power One tires
    MotoBit's rearsets
    16\43 gearing
    F.Fabrri double bubble
    Removed Flywheel
    Showa forks with Ohlins internals - Thompson Suspension
    Ohlins Steering dampner
    Ohlins rear shock
    36,000 miles
    New timing chains.
    1:35's at Pacific raceways
    2:12's at Miller Motorsports AMA track

  12. #27
    apriliaforum Junkie 300lbGorilla's Avatar
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    Thanks! Methinks I'll leave 'em in.

    I'm looking forward to the kit.
    I am so proud of all this stuff I've bought. Let me list it here so you will be impressed.

  13. #28
    apriliaforum expert pizzadude's Avatar
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    Quote Originally Posted by mossback View Post
    When I work on my bike in the garage, I press the CATs back into the exit nozzles to soften the noise for my neighbors...
    Hey Mossback, thanks for your input on this...I'm still tempted to save a boatload of $$ and core my pipes, since they still look the cat's nuts compared to anything else...

    anyway, my question - you push to cats further into the pipe to soften the noise...which direction are you pushing...upstream (towards to engine) or downstream?

    Out of curiousity, why does this soften the noise?
    2007 Tuono Factory
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    Woodcraft Frame sliders, Look, MV Front & Rear axle sliders, at, Evoluzione Plate Relo, the,
    Decals by CKruzel, Money, Clear Signal Lens, I, 42/15 cogs, Wasted, Cored Exhaust-Map 2, Pirelli DCIII's

  14. #29
    apriliaforum expert mossback's Avatar
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    Quote Originally Posted by pizzadude View Post
    anyway, my question - you push to cats further into the pipe to soften the noise...which direction are you pushing...upstream (towards to engine) or downstream?

    Out of curiousity, why does this soften the noise?
    I am refering to the CAT's I drilled out of the stock cans, they will wedge nicely into the external exit nozzle like a cork. The CAT is just partially wedged into this opening and is not meant to be ridden on the road just for tune ups and oil changes, it cuts the db a few points and hopefully keeps my neighbors happy while I idle that beast for 10 or 15 minutes to warm her up.
    There is no better place to find good advice about life, business dealings and fear than from people who have gone through it before.

    IT Services

    RED 2004 RSV1000R
    PCIII usb custom map
    Full Arrow headers and Ti slipons
    Michelin Power One tires
    MotoBit's rearsets
    16\43 gearing
    F.Fabrri double bubble
    Removed Flywheel
    Showa forks with Ohlins internals - Thompson Suspension
    Ohlins Steering dampner
    Ohlins rear shock
    36,000 miles
    New timing chains.
    1:35's at Pacific raceways
    2:12's at Miller Motorsports AMA track

  15. #30
    apriliaforum member scott2ride's Avatar
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    Hey Mossback, didnt the "Anti Cruelty to Animal League" take issue with you stuffing those Siamese Cats into your exhausts for noise baffling???
    ScottyDog

    Official Aprilia Linkage Tester !

    In The Garage

    1. Tuono V4 1100 RF, stock gearing, Austin Racing GP2R pipe, Race ECU, heated grips, CRG Bar End mirrors, Hepco-Becker sports Rack with Givi Top box when touring, Intercom to both give and receive abuse, Nitrous kit, super charger, shitty Chinese folding levers & a flashy sticker that makes me faster...

    2. Maserati Granturismo S 4.7L MC F1 Gearbox

    3. Land Rover Discovery Sport

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