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Thread: New reproduction 48 to 52 hydraulic pushrods

  1. New reproduction 48 to 52 hydraulic pushrods

    Has anybody tried these? I did a forum search as well as a generic google search but canít find any feed back from n them. I know V Twin or Taiwan ted or whatever itís called these days used to have a bad reputation for quality but wondering if thatís still the case.
    https://rover.ebay.com/rover/0/0/0?m...2F293378674269

  2. #2

    Re: New reproduction 48 to 52 hydraulic pushrods

    Assuming they work? All of your oil delivery must be in top shape or they won't "inflate" and you'll have very expensive solid pushrods.

  3. #3
    Join Date
    Aug 2010
    Location
    Twin Cities, MN
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    3,185

    Re: New reproduction 48 to 52 hydraulic pushrods

    what's the alternative?


    Quote Originally Posted by panic View Post
    Assuming they work? All of your oil delivery must be in top shape or they won't "inflate" and you'll have very expensive solid pushrods.
    1947 EL
    1948 FL Project
    1947WL Project
    2000FLSTC

    But there's booze in the blender
    And soon it will render
    That frozen concoction that helps me hang on

    You never get better....you just get less awful. "Joe Walsh"

  4. #4
    Join Date
    Sep 2009
    Location
    Missouri City, Texas
    Posts
    11,110

    Re: New reproduction 48 to 52 hydraulic pushrods

    A good set of hydraulic pushrods with a quality oil like Brad Penn 60 wt work fine as long as you understand their limitations. I don't know anyone that's tried the repops but Adam has researched these quite a bit and may know someone who has....

  5. #5

    Re: New reproduction 48 to 52 hydraulic pushrods

    Quote Originally Posted by tomcat1 View Post
    what's the alternative?
    Solid aluminum pushrods... adjusted correctly. Zero lash, cold engine.

  6. #6

    Re: New reproduction 48 to 52 hydraulic pushrods

    Quote Originally Posted by droptopford View Post
    Solid aluminum pushrods... adjusted correctly. Zero lash, cold engine.
    I thought of another solution.
    The expansion of aluminum is greater than that of steel, why not replace the steel tubes with aluminum while keeping the hydraulic system.
    I think I have found the right compromise but that I may never be able to test it (I may be wrong but it's still worth trying).
    This is what I asked Hervť, I found 7075 T6 aluminum round bars.
    He has to edit me this year.

    http://panhead51.eklablog.com/modifi...rods-c30963612

  7. #7
    Join Date
    Sep 2009
    Location
    Missouri City, Texas
    Posts
    11,110

    Re: New reproduction 48 to 52 hydraulic pushrods

    I don't understand why the need for a "solution". The OEM pushrods work fine. Using solids is just a lazy alternative to doing it right. Properly adjusted they are smooth and quiet.

  8. #8

    Re: New reproduction 48 to 52 hydraulic pushrods

    Quote Originally Posted by Mr. Big View Post
    I don't understand why the need for a "solution". The OEM pushrods work fine. Using solids is just a lazy alternative to doing it right. Properly adjusted they are smooth and quiet.
    Mr. Big, tomcat1 asked for an alternative (not a "solution") and I gave him one.
    Panhead51 took it a step further, calling it a "solution, the insinuation being that there is a problem that needs to be solved.

    I agree that the OEM hydraulic pushrods can work adequately. If they worked flawlessly and consistently I don't think the MoCo would have abandoned that design for the later (hydraulic lifters located below) one.

    But... assuming they do operate as they were designed to operate, they shouldn't need much attention once adjusted properly. The solid pushrods do require periodical adjustment. I don't understand what you mean by "Using solids is just a lazy alternative".

    Clark

    And thanks for your continued contributions to the 'Vintage Pics' thread.

  9. #9

    Re: New reproduction 48 to 52 hydraulic pushrods

    I had read on the forums that they were often replaced by rigid. I said to myself why not combine the 2.
    Combine the hydraulic system and the expansion of the aluminum.
    My idea may be silly, I recognize it, but why not give it a try?
    When I think of something, I try to put it into practice.
    I don't mind when it is finished, find someone to ride them on his bike and tell us what he thinks.
    Before my motorcycle runs, a lot of time will pass.

  10. #10

    Re: New reproduction 48 to 52 hydraulic pushrods

    I'm going with silly if that is the word you like.

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