Broken Std piston on 430

Discussion in 'Street/strip 400/430/455' started by Sebastian, Jan 2, 2021.

  1. Sebastian

    Sebastian Well-Known Member

    Hey,

    Happy new year!

    Had my engine out for a long time (broken nylon teethes on the timing gear) and now saw that one Piston is broken between the Piston rings. Surface of Piston wall look like the others. Does somebody know where I got one of the old 4.1875 Piston from the 430 cui engine can also one used one with shipping to Germany.

    Sebastian
     
  2. Dr. Roger

    Dr. Roger Stock enthusiast

  3. Bens99gtp

    Bens99gtp Well-Known Member

    Are you looking for just a stock 430 piston????? If so I think I have a few.....ill double check, but no clue what shipping would be
     
  4. Matt Knutson

    Matt Knutson Well-Known Member

    I bought a used 455 piston from T/A Performance. Check with them if other options fail.
     
  5. flynbuick

    flynbuick Guest

  6. Schurkey

    Schurkey Silver Level contributor

    You'd better be looking REAL CLOSE at the other seven pistons. If one was run hard enough to break...the other seven were seeing the same conditions.

    Good time to upgrade to pistons with proper compression height. More compression...less detonation. More power, better economy, lighter piston weight.

    You'd want to have the engine balanced. I suppose that leads to complete rebuild, aluminum heads, different cam, and aftermarket fuel injection "while you're in there anyway".
     
  7. 1969RIVI

    1969RIVI Well-Known Member

    And a complete body off resto since the engine will be out anyways:rolleyes::D:p
     
  8. Brad Conley

    Brad Conley RIP Staff Member

    "While we're here...."
     
    1969RIVI likes this.
  9. Mark Demko

    Mark Demko Well-Known Member

    Absolutely!
    Overdrive trans, and a 4.88 rear gear too.

    I agree, cant have all that Buick power unless its wrapped in a shiny new body and interior.
    I'd also build a proper 8 car poll barn for proper storage:p
    Oh, heated concrete floor, plenty of LED lighting, and a lift, a fridge for beer, and a bathroom so you can pee out the beer without going outside or in the house all greasy which will probably lead to divorce and you'll loose everything:eek:
     
  10. Sebastian

    Sebastian Well-Known Member

    Hey,

    It's me again

    Checked all other pistons and they looked good for me. Only no 3 is broken.

    Didn't find a used original std Piston (checked also cannibal in Netherlands) but I buyed a set of used after market pistons (Silvolite 1728) which was not the best idea. The top surface looked bad.

    Costs for machining and new pistons is to high here in Germany.

    Is it possible to use only one Silvolite Piston and leave the other 7 original ones? I weight both and there is a difference about 10 grams (0,35 ounze)

    @bens will contact you soon
     

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