DR650SE Index Topic #11- EXHAUST

Discussion in 'Thumpers' started by Krusty ..., Nov 11, 2010.

  1. thepostmanpat

    thepostmanpat n00b

    Joined:
    May 3, 2011
    Oddometer:
    1
    great thread, thanks. any suggestions for mods on the 'older' DR? i just picked up a 94' and would really like to ditch the stock one.
    thanks
    #21
  2. thealien

    thealien Not From Around Here

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    fremantle
    #22
  3. GISdood

    GISdood Been here awhile

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    Apr 2, 2009
    Oddometer:
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    Prince George, BC
    Stock header, but the big glob-tastic chunk of weld material has been ground away. A dremel and one of these did the trick, and only took about 5 minutes:

    [​IMG]

    I picked up a slightly used FMF Q2 from another DR owner on the Yahoo user group, at which point I rejetted the carb, did the airbox mod, etc.

    Over the winter, I decided to clean up the header pipe (and the midpipe of the FMF as well). Started by going to town on the dirt-baked header with a wire wheel:
    [​IMG]

    This made pretty short work of the dirt, as well as the paint. After that, I spent a couple hours with a 3" dia sisal polishing wheel with some emery compound which yielded this:
    [​IMG]

    I followed that up by spending another hour or so with a cotton buffing wheel and stainless polishing compound (the green stuff). This is what I wound up with:
    [​IMG]

    Back on the bike, all nice and shiny-looking:
    [​IMG]

    Other than the time that it takes, wasn't difficult at all, and the results were definitely worth it!
    #23
  4. motoracer51

    motoracer51 Been here awhile

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    Oddometer:
    700
    Location:
    Western Colorado
    Hey guys, just to be certain I buy the correct one, which years of the GSXR1000's were the canisters Titanium, and the ones preferred to use on the DR650?

    Thanks!
    #24
  5. thumpididump

    thumpididump MacGyver

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    #25
  6. motoracer51

    motoracer51 Been here awhile

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    Sep 18, 2009
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    700
    Location:
    Western Colorado
    #26
  7. thumpididump

    thumpididump MacGyver

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    Worry more about the number stamped on the side, not the year. The guy I bought mine from said it was an '03 also, but all I cared about was that it said X40F0X.

    If it's stamped 35F01, then that will also work, too. But it means that it's from a GSXR600 or 750, and the guts of the muffler are made of steel, not titanium. Only a pound or so heavier. I happen to have one in my basement. Works great and I can't tell any difference in terms of performance or sound.
    #27
  8. motoracer51

    motoracer51 Been here awhile

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    Sep 18, 2009
    Oddometer:
    700
    Location:
    Western Colorado

    Thanks! Where is the code stamped generally so I can ask the seller - they seem clueless.
    #28
  9. thumpididump

    thumpididump MacGyver

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    [​IMG]
    #29
  10. motoracer51

    motoracer51 Been here awhile

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    Sep 18, 2009
    Oddometer:
    700
    Location:
    Western Colorado
    Thanks. Apparently this guys pipe is incorrect s it shows a X18G1X code on it. Any idea?
    #30
  11. thumpididump

    thumpididump MacGyver

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    '03-'04 GSXR1000. Quite a bit longer, and fatter in diameter. Big like a bazooka.


    #31
  12. motoracer51

    motoracer51 Been here awhile

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    Western Colorado
    Thanks a bunch!! You just saved me what could've been a real head ache.:lol3
    #32
  13. B1

    B1 Carbon-based bipedal

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    this link has photos of the different year model pipes all lined up together, plus a pile of other info.
    #33
  14. thumpididump

    thumpididump MacGyver

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    I know. I already posted it 7 or 8 posts back.


    #34
  15. kezzajohnson

    kezzajohnson kezza

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    The one you want is the nearest one in the pic (in link above) Mxrob had listed the part number for it X40F0X and that it the 01/02 Titanium model. Mxrob is in California or one of the States (I think).

    As this is an Australian Thread, the one you should be looking for is actually part number X40FIX which is the same as the above, just the Australian version (probably slight different internally because of emission rules.

    I got mine (below) off e-bay (Au) for $50.00 plus postage about 12 months ago. Only just fitted it though and I couldn't believe no one else was bidding on it and I have never seen one since. Including materials and labour to have my own mid-pipe (my own design and bends), and a flange cut (all stainless steel) made up, the system has cost me about about $250.00 (AUS) to produce. It works great and is a mega difference from the Supertrapp that was fitted. I even got a set of GSXR1000 indicators with it free which I am going to put on my other half's DRZ250 that has OEM indicators on the back that act like wings.

    [​IMG]
    #35
  16. kobudo28

    kobudo28 Banned

    Joined:
    Sep 22, 2005
    Oddometer:
    5,888
    Location:
    New Hampster. Live, Freeze and Ride.
    I have and FMF Power Bomb front pipe and Q4 muffler that I put on during my winter rebuild., pumper carb, cut airbox with a K&N.

    It does run well and the FMF system is much ligher than stock.

    After a few short rides totaling 20 miles,doing some checking before I go longer, I have found the FMF system to be way too loud for my liking.

    I will be selling the Q4 rear section in FLea Market and going with Jesse's TB mid pipe and a GSXR can, which is what I wanted to do and should have done in the first place.

    Too bad that there isn't a quieter baffle option for the Q4. It is far from "Quiet Core" if you ask me.
    #36
  17. 98940

    98940 #ridehvmc

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    NY USA
    +1
    #37
  18. acesandeights

    acesandeights Asperger

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    What are the actual benefits of something like a FMF Q4? Are there any negative impacts to performance (lose low/mid end tq/hp), reliability, etc.? Do most slip ons go on without jetting/carb issues?
    #38
  19. thumpididump

    thumpididump MacGyver

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    Air definitely flows better with just about any aftermarket exhaust, even with the GSXR system. Unless you're going to mess with your airbox, then re-jetting the carb isn't required. Most people will do intake and exhaust mods at the same time, for increased performance. In this case, you will need to re-jet.

    Some people do it purely for a sweeter sounding exhaust note but many of the aftermarket options are quite loud. The GSXR system isn't excessively loud but is definitely a deeper sound and a little louder.


    #39
  20. ER70S-2

    ER70S-2 Long timer

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    Be aware that you can grind the header weld too far, maybe? :scratch

    Edit: SprintST contacted me later, his weld had not been ground. Blk-betty's pipe also broke like this and had not been ground either. That's two failures in this 72,xxx post thread, not something I'd worry about.
    Pic from SprintST, on a trip somewhere in Mexico: :ricky :freaky

    [​IMG]

    Blk-betty:

    [​IMG]
    #40