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Thread: Oil Jet - Difficulty Finding Neutral

  1. #31
    apriliaforum expert Stick's Avatar
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    clean it...gasket....got it. will do thanks! if it still drips....duct tape and caulk!
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    mmmmmmmmm.....Panty Gravy!!

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  2. #32
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    guys, just tried this method. replaced the jet and didn't do anything else. works like a charm. man, do i like to be able to find neutral
    thanks a lot.
    05 RSVR
    04 R1

  3. #33
    apriliaforum expert kzmille's Avatar
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    Quote Originally Posted by sjruckle View Post
    ...The #40 jet (that you just installed) has a larger hole than the #60 that the engine came with. Since more oil is being allowed onto the clutch pack it will lubricate the plates more and erase some little problems (like not being able to find neutral and having the bike creep forward while in gear with the clutch in)...
    sjruckle,

    This information about jet sizes and numbers is wrong and should have been challenged. On these oil jets, like carburetor jets, the higher the number the larger the hole, the lower the number the smaller the hole.

  4. #34
    just another Aprilia fanatic amauri's Avatar
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    Quote Originally Posted by kzmille View Post
    sjruckle,

    This information about jet sizes and numbers is wrong and should have been challenged. On these oil jets, like carburetor jets, the higher the number the larger the hole, the lower the number the smaller the hole.
    Correct.

    The original intent of the smaller main shaft oil jet was to supply more oil pressure to the crankshaft.
    As a result, neutral became a little easier to find.
    Never accept mediocrity, always demand competence.

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  5. #35
    apriliaforum expert
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    I just put the #40 jet in the Falco and the RSV and it has made finding neutral much easier in both. I have also noticed, on the RSV in particular, that gear changes have become smoother right through all gears. Well worth the trouble.

  6. #36
    apriliaforum expert theknurl's Avatar
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    jets

    the oil jets are marked as to the diameter in 100ths of a millimeter

    carb jets are marked by cross-sectional area
    ever see the square in a square stamped on Mikuni or Keihin jets?

    Noel-theknurl

  7. #37
    apriliaforum expert Roadless's Avatar
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    So the OEM oil jet is 0.6mm in diameter, and the replacement is 0.4mm in diameter ( across the hole )

    Where would I find one commercially ?
    ( without having to buy it abroad and ship it home )
    Black Factory 05

    mods so far:
    öhlins forks with gsxr seals
    flywheel thingy out.
    akrapovic slipons, to make the neighbours love me.
    PC-3 made in china, with strange arabic letters...
    J-KIT on the way-190 dyno horses in the making.
    1,8 bar boost.
    Blows up on dynos.

    WHEN IT self destructs, there is no room for more tuning !

  8. #38
    just another Aprilia fanatic amauri's Avatar
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    take yours off, measure the threads and diameter and Google
    Never accept mediocrity, always demand competence.

    Certified Aprilia Moto Service in Southern California
    Call me at 714 892-4056 for appointment

  9. #39
    apriliaforum expert kzmille's Avatar
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    Quote Originally Posted by Roadless View Post
    ...Where would I find one commercially ?
    ( without having to buy it abroad and ship it home )
    Any aprilia dealer can get it for you. Part no. for the #40 jet is 0268751.

  10. #40
    apriliaforum expert Roadless's Avatar
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    KZ...you might read the location ...I live in an island of 300 thousand.....there is ONE aprilia dealer, and he does the same thing as me, the question was, are there jets that fit but from other sources, like for gas, or water or carb-jets that would fit the bill, and allow me to shop locally, yes, locally....for the part.
    Black Factory 05

    mods so far:
    öhlins forks with gsxr seals
    flywheel thingy out.
    akrapovic slipons, to make the neighbours love me.
    PC-3 made in china, with strange arabic letters...
    J-KIT on the way-190 dyno horses in the making.
    1,8 bar boost.
    Blows up on dynos.

    WHEN IT self destructs, there is no room for more tuning !

  11. #41
    apriliaforum expert kzmille's Avatar
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    Quote Originally Posted by Roadless View Post
    ...the question was, are there jets that fit but from other sources, like for gas, or water or carb-jets that would fit the bill, and allow me to shop locally, yes, locally....for the part.
    The short answer is no. See post no. 36 above.

  12. #42
    apriliaforum expert theknurl's Avatar
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    living far away

    hey folks listen to what Roadless said, he can't get things easily, period

    AF1 provides us with great access to parts and for US stateside postage is cheap

    the list for the jet was $10.20 in July '07 [not what i paid though]
    now the international shipping rate starts at $40 so now it's $50....now if Roadless has a VAT[valve added tax] and or a luxury tax....
    [France's luxury tax used to be 45%]....add a VAT to that holy shit a $0.50
    part can be $100.....!!!

    yes i used to buy Mikuni main jets from Sudco for $0.45

    yes i measured the thread, M4x0.7 and Googled it ....no luck

    so this week i'll go to Sudco...a Keihin air bleed looks good but they list the length of the jets not the thread, maybe Roadless will get lucky.....i get bulk dealer price, if they have it, i'll buy it and just send it to him
    yes i'll take a calculator and some wire drills to measure jets

    just trying to help forum members out

    Noel-theknurl

  13. #43
    just another Aprilia fanatic amauri's Avatar
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    Quote Originally Posted by Roadless View Post
    the question was, are there jets that fit but from other sources, like for gas, or water or carb-jets that would fit the bill, and allow me to shop locally, yes, locally....for the part.
    If you don't want to have AF1 send you one via Post, it is up to you to get resourceful.

    In your shoes, I would take it off and check with the small engine shops that work on lawn mowers and trimmers. They have small carburetors.

    I've also used solder to fill the hole on a carburetor jet and re-drill it to desired size.
    Now I’m not saying this is the best fix but in a pinch, it works.
    What's the worse that could happen, hot oil melting the solder?
    Doubt it, but no harm if it does.

    So in summary, no one knows of another part that is a direct fit.
    But, since it's only function is to restrict oil flow, there's not much to it.

    As long as you don't strip out the threads or block the passage way completely.
    Never accept mediocrity, always demand competence.

    Certified Aprilia Moto Service in Southern California
    Call me at 714 892-4056 for appointment

  14. #44
    apriliaforum expert PlatinumRSV's Avatar
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    Thanks for the great info guys!

    I just bought a 2001 RSV1000 (with 8,000 miles) this week and am having the first gear creeping and hard to find neutral issues. I will check with my dealer on Monday to see if they can get the part...

  15. #45
    just another Aprilia fanatic amauri's Avatar
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    The oil jet will not fix for your “creeping” issues.

    Your clutch needs bleeding or adjusting, how much lever free play do you have?
    Never accept mediocrity, always demand competence.

    Certified Aprilia Moto Service in Southern California
    Call me at 714 892-4056 for appointment

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