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YZ450f Valve adjustment...

  1. #1
    Lifer oreo_n2's Avatar
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    YZ450f Valve adjustment...

    took my first shot at a shim-under-bucket valve train this weekend.... it was not trivial but surprisingly less difficult than expected. Every single valve was out of spec... and to my pleasant surprise the dealership had the shim sizes i needed, and only charged about $5 a piece.


    I fired her up after reassembly and she seems to be running well, we'll see if i got everything exactly right when i beat the bag out of her tomorrow!

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    Brent LRRS #772
    2006 KTM 560 SMR

  2. #2
    Senior Member The Magician's Avatar
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    YZ450f Valve adjustment...

    is that the bike in your avatar? my roommate runs a yz450 on the dirt, looking for a setup for street tires.... where did u get yours and how much?

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  3. #3
    It never got fast enough rebelpacket's Avatar
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    YZ450f Valve adjustment...

    FYI Brent,

    As you seem like a "do it yourselfer", check out the shim kits you can get for your YZ450 from Hotcams. 5$ a shim isnt too bad when you've only got 4 shims you need.

    But a shim kit almost pays for itself after a few adjustments! Your lady friend's YZ426 could use shims out of the same kit too.

    http://www.cyclebuy.com/shopping/shims/shimkits.htm

    I have the 9.48mm kit for my SM510R.

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    They should call Production Twins what it really is, Shitty McBikefest. Rules for Participation: If your bike runs lower laptimes than a lawnmower, you are not eligibile for Shitty McBikefest. -Darrell

    Alex Pearsall #121 ESMRA / #512 LRRS

  4. #4
    Lifer oreo_n2's Avatar
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    YZ450f Valve adjustment...

    Originally posted by The Magician
    is that the bike in your avatar? my roommate runs a yz450 on the dirt, looking for a setup for street tires.... where did u get yours and how much?
    yea its that bike.
    She ran great for the track day!


    The wheels for that bike came with it, it was R7's race bike last year.

    www.eastcoastwheels.com has wheel kits, i think thats where this set came from. you're probably looking at $1500 when all is said and done if you buy everything new.

    Shop around, as these bikes get more popular, more and more used wheels are coming available. you could probably get a used set for something in the $600 range.

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    Brent LRRS #772
    2006 KTM 560 SMR

  5. #5
    Lifer oreo_n2's Avatar
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    YZ450f Valve adjustment...

    Originally posted by rebelpacket
    FYI Brent,

    As you seem like a "do it yourselfer", check out the shim kits you can get for your YZ450 from Hotcams. 5$ a shim isnt too bad when you've only got 4 shims you need.

    But a shim kit almost pays for itself after a few adjustments! Your lady friend's YZ426 could use shims out of the same kit too.

    http://www.cyclebuy.com/shopping/shims/shimkits.htm

    I have the 9.48mm kit for my SM510R.

    thanks man, thats the same thing my lady friend was saying to do, in this particular case, time was not on my side.


    p.s. its a 5 valve engine, not 4.

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    Brent LRRS #772
    2006 KTM 560 SMR

  6. #6
    It never got fast enough rebelpacket's Avatar
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    YZ450f Valve adjustment...

    Completely forgot that those yammies have that extra valve. Always gotta be different you yamaha folks.

    I hear you on the time thing. Just figured i'd throw you the link if you didnt know about it.

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    They should call Production Twins what it really is, Shitty McBikefest. Rules for Participation: If your bike runs lower laptimes than a lawnmower, you are not eligibile for Shitty McBikefest. -Darrell

    Alex Pearsall #121 ESMRA / #512 LRRS

  7. #7
    Just Registered SQUIZZ636's Avatar
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    YZ450f Valve adjustment...

    But a shim kit almost pays for itself after a few adjustments!
    well maybe he will listen to you because I am just a girl!!!!

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    no regrets!!! life is just too short

    01 YZ426 motard (sold)
    99 YZ250 (sold)
    klx 110

  8. #8
    It never got fast enough rebelpacket's Avatar
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    YZ450f Valve adjustment...

    Whoo boy. Didnt mean to dive into a senstive subject! Apologies all around!

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    They should call Production Twins what it really is, Shitty McBikefest. Rules for Participation: If your bike runs lower laptimes than a lawnmower, you are not eligibile for Shitty McBikefest. -Darrell

    Alex Pearsall #121 ESMRA / #512 LRRS

  9. #9
    Just Registered SQUIZZ636's Avatar
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    YZ450f Valve adjustment...

    no biggy just givin him some shit.

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    no regrets!!! life is just too short

    01 YZ426 motard (sold)
    99 YZ250 (sold)
    klx 110

  10. #10
    Don't bother me! R7's Avatar
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    YZ450f Valve adjustment...

    Originally posted by SQUIZZ636
    well maybe he will listen to you because I am just a girl!!!!
    And you can ride more better than him

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    Yamaha

  11. #11
    Lifer oreo_n2's Avatar
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    YZ450f Valve adjustment...

    Originally posted by SQUIZZ636
    well maybe he will listen to you because I am just a girl!!!!
    Thats right!!!
    Now get in the kitchen and make me a PIE!



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    Brent LRRS #772
    2006 KTM 560 SMR

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