25 or 23 HP Kawasaki Engine FH721 or FH680 pics of Rebuild all the way through.

Discussion in 'Mechanic and Repair' started by teckjohn, Jan 16, 2013.

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  1. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    Ball hone puts a nice finish on the cylinders...if used properly...
    I still use my 2 4 in spring hones...120 and 400 grit stones..
    The spring hones give a true read on the cylinder walls...where as the ball hone scratches everything..
    I get the crosshatch close with the 120 grit...and finish the crosshatch with the 400 grit..
    This allows the rings to seat without roughing up the new rings...and also provides excellent oil control.
     
  2. Landrus2

    Landrus2 LawnSite Platinum Member
    Posts: 4,811

    Hey teckjohn.
    In my opinion that is great work.
     
  3. teckjohn

    teckjohn LawnSite Senior Member
    Posts: 258

    Im just trying help guys make it and keep them from the PARTS Changers!!
     
  4. joe billy

    joe billy LawnSite Member
    Posts: 35

    Looks like I missed the fireworks again.
    There aren't too many hacks or parts changers that dare post in this forum.
    Just who are you referring to ?
     
  5. laman

    laman LawnSite Senior Member
    Posts: 335

    I built a 383 stroker motor for a street stip car final honing was done with 600 grit hone at machine shop. Honing I've seen here looks a little rough for new rings...
     
  6. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    Sounds like you found a machine shop that knows their way around the inside of an engine.
    I did not invent the 2 hone crosshatching method...it was taught to me by a master engine builder.
    There is a lot of horsepower hiding inside an engine...reducing friction is a good place to start.
     
  7. Landrus2

    Landrus2 LawnSite Platinum Member
    Posts: 4,811

    Let's start over with respect now :weightlifter:
     
  8. Michael J. Donovan

    Michael J. Donovan Head Moderator, Online Communities Staff Member
    Posts: 3,389

    ok guys, time to move on and please refrain from personal attacks towards one another

    thanks, we would appreciate it :waving:
     
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