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Gen 2 - Gen 1 parts interchangability

Discussion in 'Gen II Busa Information' started by mestona, Mar 5, 2012.


  1. mestona

    mestona Registered

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    Ok so I know from exp:

    Levers
    Reservoir Covers
    Oil Filters
    Lots of small clips, bolts, odds and ends
    Clutches

    But what about:
    Rear tire huggers
    Front Fenders
    Wheels
    Other addons

    There is a lot of stuff (Carbon Fiber :drool: !) I see that is only sold for "1999-2007" but the parts they mount to look to be the same (i.e. the swingarm mount looks the same for the hugger so why wouldn't it fit?)
     
  2. nabusa

    nabusa Registered

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    Gas tanks and rear wheel works, I don't know about the front wheel.
     
  3. dadofthree

    dadofthree Seasoned Beef Donating Member Registered

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    I didn't think the wheels would swap. Could be wrong.
     
  4. Ludicrous Speed

    Ludicrous Speed Registered

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    Clutch, bar ends, waterpump
     
  5. moloko

    moloko Banned

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    Subframes a direct bolt on replacement, but each will only hold the appropriate generation tail plastics. Front fairings can be swapped if you replace everything... headlight, signals, sides, inner panels. Inner panels don't line up very well with the wrong gas tanks, but tanks will swap also.

    I've been told fairing stays are interchangeable.

    Frames (i've never done a frame so may be looked into further), swingarm, engine blocks are interchangeable as far as I know, though you have to use the appropriate generation of rear sets on the frame, the appropriate year lower link bushings and brake stay for the swingarm, and the gen 1 block is less likely to split apart in large bore applications... namely 1441.

    Front fenders are a no go, unless you swap forks. Gen 2 brakes / forks are better.
     
  6. sixpack577

    sixpack577 Top Gun Registered

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    The gen1 midpipe bolt pattern where the muffler bolts on is the mirror image of the gen2 midpipe. BOLT ONS, not slip ons, as slipons come with there own midpipe(alot of slipons will interchange with little to no modification too).
    So gen1 bolt ons will bolt to a gen2 if you switch the sides of the mufflers; and they must have sliding mufler hangers(as most aftermarket mufflers do). Stockers won't directly swap because the muffler mount hole is fixed, and the gen2 is a couple inches further up the muffler than the gen1.

    Gen1 and gen2 oilpans are also shaped differently(bolt pattern is the same).
    Gen1 and 2 header tubes will fit either gens head, but depending on the header brand you may or may not have oil pan clearance issues with the bend under the pans.


    Handlebars interchange, and Heli-bars interchange, but you will need to drill new switch housing locator pin holes. As the switch housing spacing and orientation is slightly different between the gens.

    Mirrors also interchange, as well as with gsxr1000 mirrors from 01 up.
    The 600/750 mirrors from 02 up are also the same.

    Frames are the same, with one exception. The gen2 has one extra hole on each top side near the front of the gas tank. The holes are for a plastic pin that helps secure the gen2 fairings

    Aftermarket rearsets will fit either gen.
     
  7. sixpack577

    sixpack577 Top Gun Registered

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    They will interchange, as well as with some of the gsxr wheels, but only with different wheel spacers.
    I don't have the details as to which or what size spacers are needed though.:beerchug:
     
  8. turbojonny

    turbojonny Registered

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    Rear wheels are a tad bit wider at the hub, but will still fit with appropriate leverage and swear words. Drive sprocket does not interchange. Plenums usually don't, as the two inner spicketts are closer together on a gen 2. Sometimes they can be forced in, but its not something I'd recommend. Frames have different rake geometry, but that doesn't effect parts interchangeability. Seats are different.
     
  9. boom

    boom Registered

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    what about the clutch basket and inner hub?
     
  10. 1busa

    1busa Registered

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    The Gen2 radiator and oil cooler will bolt on to a Gen 1. You will have to buy or fabricate a fan temp switch or remote wire the 2nd fan to kick on
     
  11. smkn951

    smkn951 Registered

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    are wind screens interchengeable?
    TIA
    Carl
     
  12. FanaticalKilla

    FanaticalKilla Registered

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    Handle bars, you mean the bar mount?
     
  13. mestona

    mestona Registered

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    Nope...
     
  14. mestona

    mestona Registered

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    Yup, as is the clutch
     
  15. lisma

    lisma Registered

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    Bro just asking.That mean I just can buy the Gen II Radiator and just swap in GEN I just like that without any modification.

    Thanks in advance.
     
  16. 1busa

    1busa Registered

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    Yes I have this mod on my 03 busa now. Buy a Gen 2 rad off ebay and it bolts right on along with the oil cooler from a gen2. You have to either buy or fabricate your own fan temp switch or run a remote switch to turn on the 2nd fan. Your gen1 hoses will still fit on as well but you have to play with them a little bit.

    Also on another note the wheels may mount with spacers added but I wouldn't recommend it w/o swapping the forks as well because the rotors are different sizes and you will need Gen2 calipers.
     
  17. sixpack577

    sixpack577 Top Gun Registered

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    No, the handlebars themselves.
     
  18. lowrider98339

    lowrider98339 Registered

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    What is the diffrence in the swing arms ? what would I have to do to fit a gen1 to a gen 2 ?
     
  19. D_A

    D_A Registered

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    So I have a Tiforce full exhaust for a gen2 but will it bolt up no problem to a gen1?
     
  20. Argilbertson

    Argilbertson Registered

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    Will levers for a 2nd gen swap over? I'm getting some conflicting info looking at this...hopefully someone can make a definitive statement here.
     

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