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Project The Yamaha R4 (Glacially Slow Project)

Discussion in 'Other Projects - Other Bikes (non 250's)' started by maelstrom, Dec 20, 2014.

  1. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    My Bike:
    Yamaha FZR400 3TJ1, Honda MC22
    Handy Hints:
    I prepare the crankcase mating surfaces by using a clean rag on one finger and spraying it with Brakleen. Then I repeat that until the rag remains clean. You think they are clean but when you do this you see how dirty they really are.
    Engine_00.jpg Engine_07.jpg
    Fitting the oil pump
    Wire brush the screw threads and prep with solvent, then apply red Loctite. Only use grease on your new gasket. This is what you should always use on gaskets (excluding head). If the mating surfaces are extremely dodgy then I will use Loctite 515. Please don't post here that you use Hylomar, Permatex or some other gunk and it works really great for you. Put it in your own thread.
     
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    Last edited: Jul 5, 2020
  2. Simon

    Simon Well-Known Member Premium Member Contributing Member

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    Runs a small company
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    North Wales UK
    My Bike:
    GSXR 250R, CBR400 NC29, GSXR 250R-SP
    Awesome job there buddy..all coming together nicely!!
     
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  3. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    My Bike:
    Yamaha FZR400 3TJ1, Honda MC22
    Had to get the head vapour blasted to match the rest of the engine.
    CylHeadVapBlasted copy.jpg
    I bought a Chinese electronic torque adapter 3/8" drive, it seemed okay for the M8 case bolts, but I didn't go up to the 8kg-m for the RH crank bolt. I still trust my arm more. For the M6's I have a 1/4 drive that I really use as a double check thing and again I trust my arm more than the tool. Not recommending that you throw your torque wrenches away :) Just me.
    torque.jpg TimingCoverOn copy.jpg
    Just waiting for some diamond lapping paste to come from the US and I will put the head together.
     
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    Last edited: Jul 28, 2020

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