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LiteTek Inlet Manifold Rubbers

Discussion in 'LiteTek Carburettor Kits and Products' started by maelstrom, Nov 19, 2016.

  1. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Hi All,
    As some of you may know it is becoming difficult to source inlet manifolds for the older bikes. The mould costs are too high for me to consider making these but there is a way to overcome that. By using a two piece design, like a lot of earlier models, the rubber becomes a lot simpler and generic. It is only the aluminium manifold that differs from model to model.

    We have done these in Viton (FKM) for the early model 400 Yamaha 1WG. The next step will be producing aluminium stubs so that owners with different models can make their own inlet manifolds. Then we will produce the same for the smaller Mikuni BDST's that are used on the 250's

    http://litetek.co/InletManifoldRubber_Yamaha_1WG.html

    cheers
    Blair

    [​IMG]
     
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    maelstrom, Nov 19, 2016
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  2. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

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    your brain is quite obviously getting a very good blood supply and functioning very well indeed - some clever thinking there, well done
     
    ruckusman, Nov 19, 2016
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  3. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Thanks, but a lot of this is not as altruistic as it may seem. I need this solution for my 400 so it makes sense to come up with something that will be long lasting and benefit others also. Then I can recoup the production costs and it becomes a win/win.
     
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    maelstrom, Nov 19, 2016
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  4. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

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    at any rate you can say win/win which is acceptable, just as long you don't start prattling on about synergy
    I say good work :D
     
    ruckusman, Nov 19, 2016
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  5. Joker

    Joker See "about me" for contact details. Contributing Member

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    @MashtX this might be worth paying attention to.... :)
     
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    Joker, Nov 19, 2016
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  6. MashtX

    MashtX Well-Known Member

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    Long live the Fizzer 400's!
    My rubbers are brand new 600 ones so I'll likely not need a new set for a long time - but these are an excellent idea!

    Sent from my HTC_0PJA10 using Tapatalk
     
    MashtX, Nov 19, 2016
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  7. Jez

    Jez Active Member

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    Just noticed you're making these out of Flourosilicone now
    Can you let me know the ID and OD?, might be able to replace the ones on my GJ73

    Cheers
     
    Jez, Jul 23, 2019
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  8. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    That is a once only episode. Just an experiment I wanted to try actually. I will not be doing them again. I will add some more carb to airbox rubbers in the future and they will be HNBR or if a particularly difficult part then maybe in Flourosilicone.

    ManifoldStub.jpg
    OD of stub is 38mm
    ManifoldStub_02.jpg
    The ID for the throat is 32mm.
    The OD of the manifold rubber is 50mm but I don't think you need that dimension.
     
    maelstrom, Jul 23, 2019
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  9. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Just an update.
    We have the 1WG inlet manifold rubbers for sale again. They come in a choice of NBR-PVC blend, or FKM (Viton).
    The FKM is more expensive. https://www.litetek.co/InletManifoldRubber_Yamaha_1WG.html
    NBR-PVC is a long lasting variant of NBR and is used by OEM manufacturers for these type of parts.
    Cheers
    Blair
     
    maelstrom, Jul 4, 2020
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