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Leo B

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Posts posted by Leo B

  5. Rear Axle Breather

    in 1963-64 Avanti

    Posted

    Thank you. Now I understand that the smaller one is the breather and the bigger one is for attachment. I found an article today where the larger one has been vented and the smaller one is closed. This prevents dirt and water from entering the axle and stern. Specially for 4X4 vehicles.

    https://slickrock4x4.com/dana-44-vent-axle/
    I think also (like writer of article), that small and open breather hole is not an good idea. It can easily become clogged with dirt. No wonder the idea was changed later.

  6. Rear Axle Breather

    in 1963-64 Avanti

    Posted · Edited by Leo B

    Please help. I have cleaned the rear axle and noticed that it has a threaded hole. I'm pretty sure it should have a valve. What kind of valve and where to find one? I also found a smaller hole on the same side without the thread. What is its purpose? Moisture or...?

     

    IMG_3841-2.jpg

    IMG_3846.JPG

  8. Hidden Vin Number

    in 1963-64 Avanti

    Posted · Edited by Leo B

    If you didnt know. You find hidden vin number between the shocks upper mounts holes in rear cross member. Thanks to article by Jon Myer which I found from studebaker-info.org. Here is mine R4543. Same as in front frame plate.

    vinnumber.jpg

  18. tuning question

    in 1963-64 Avanti

    Posted · Edited by Leo B

    How long? Time and distance are not important. Drive with warm/hot engine using avarage driving speed and normal engine load. Stop and turn off the engine (less idle the better). Light tan or brown is nice. Some plugs will be lighter and some darker. This is normal.
    About crankcase ventilation... Please read Workshop Manual / Engine page 5 and 6. Dont do any changes.

    Please check this article
    https://www.championautoparts.com/Parts-Matter/automotive-repair-and-maintenance/how-to-read-spark-plugs.html

  19. tuning question

    in 1963-64 Avanti

    Posted · Edited by Leo B

    In older engines and racing engines, the breath is not directed back from oilpan or valve cover to the combustion chamber/carburetor. The crankcases and covers breathe directly out through their own filters. Racing cars want as clean and oxygen-rich air as possible into the combustion chamber. But in our standard cars, the different is not so urgent. So keep it like it is. Works like 64studeavanti wrote.
    You can only read rough values from the plug regardless of whether the mixture is too rich or too lean. Today's fuel no longer gives coffee brown color. Test plugs are available with which the richness of the fuel can be adjusted reasonably well. Search on google: Gunson Colortune Spark Plug Tester. But this way the problem will be youll find that one cylinder is richer or leaner than the other and endless tuning with eights plugs. Good tool in one or two cylinder engine (motorcycle).
    You need best total solution. The best way to find the correct adjustment (do it yourself) is https://actron.com/content/engine-performance-testing-vacuum-gauge These are the things I have learned. If anyone can add or correct, please let me know.

  20. Fan and clutch loud woosh question

    in 1963-64 Avanti

    Posted · Edited by Leo B

    Hi again. I just remember one thing which makes loud sound - Bad Timing Gear.
    Also note that Stude Avanti 289 uses aluminium gear which is not the quietest. I had classic Volvo and tested three different timing gears; Fiber, aluminium and steel. Huge differences. Fiber had very soft sound and steel like airplane turbo sound. I think that fiber do not stand 289 power. Aluminium is used also in classic sport Volvos. Steel in race Volvos. Bad and dry timing gear will make very loud sound.
    I use Mechanic's Stethoscope to find where the sound comes.

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