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Technical Can I Get Away With Running My Engine As-Is?

Discussion in 'The Hokey Ass Message Board' started by Ramblux, Jun 20, 2014.

  1. That is probably a big part of it. The knurl gets wiped on the thrust side of the piston and that metal goes somewhere. Any chips or shavings floating around in your mill is going to decrease overall engine life, and once knurled the chips come off pretty easily.

    Then you also have the problem of someone taking a look at the piston at a later date, they look at the thrust side of the piston and can see that the knurl was there but now it is gone. The average Joe is not going to say well it got wiped on the thrust side of the piston, they are going to say, "well this was knurled and look at it now. Knurling must not work."
     
  2. Ulu
    Joined: Feb 26, 2014
    Posts: 1,775

    Ulu
    Member
    from CenCal

    When you knurl it's either "sell it soon" ;) or else be prepared for the complete overhaul you pretty much needed to begin with.
     
  3. hugh m
    Joined: Jul 18, 2007
    Posts: 2,142

    hugh m
    Member
    from ct.

    I knew an old man who was sent to Detroit to work in an auto factory, to attone for a wayward youth. One of his jobs was to fit pistons to the cylinders. They gave him a wood mallet, and if it felt too loose, he was to smack the piston on it's top and continue to slide it up and down, and smack it till it felt right.( Probably 1920 or so.) He went on to become a big time bank president. I have a mallet if you want to try it.:)
     
  4. elba
    Joined: Feb 9, 2013
    Posts: 628

    elba
    Member

    I remember my budget motors from years ago. Didn't have any money but a lot of ambition. I honed my motors with sand paper. I broke the old rings in two and used them as a scraper to get the carbon out of the ring lands. Cleaned with gasoline. Didn't measure a thing. Put new rings on and fired it up and drove. Ran perfect and didn't use oil.
    .0003 is like nothing. Build it !
     
  5. tommy
    Joined: Mar 3, 2001
    Posts: 14,757

    tommy
    Member Emeritus

    Only us old cheap farts would do anything like that!:D We didn't have a bunch of money for the machine shop. We'd hunt for a relatively low mileage 4dr or SW to harvest a good running engine. Build a hotrod and drive the wheels off of it. It was much later in life when I found out that you "had to spend a boatload of money" on rebuilding an engine and have it sit in the shop resting for months or years while you saved up the cash to restore the rest of the car. When my Studebaker powered truck started to smoke I hunted around and found a "relatively" low mileage example and made a swap. I don't brag about how much money that I have in the restoration. actually it's just the opposite. I brag about my thriftiness.
     

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