Separating 308 water pump from the thermostat casting | FerrariChat

Separating 308 water pump from the thermostat casting

Discussion in 'Technical Q&A' started by NYCFERRARIS, May 26, 2020.

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  1. NYCFERRARIS

    NYCFERRARIS Formula 3

    Mar 2, 2004
    1,009
    #1 NYCFERRARIS, May 26, 2020
    Hi,

    Replacing the WP on my 308 with a new one.

    I searched but surprisingly came up empty nothing is holding my 308QV WP to the casting except the gasket ( and likely some permatex) both are aluminum and I wanted to learn the best practice for separating these without damage.

    Also, need tips on safely removing the pulley w/o damage to the pulley.
     
  2. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    12,662
    San Carlos, CA
    Full Name:
    Mitchell Le
    #2 yelcab, May 26, 2020
    Correct, just the gasket … and a few m6 bolts. Remove all bolts, use a razor blade to insert between the housing and gasket. Create a gap, use a thicker wedge to make a bigger gap.
     
  3. NYCFERRARIS

    NYCFERRARIS Formula 3

    Mar 2, 2004
    1,009
    #3 NYCFERRARIS, May 26, 2020
    Thanks ! wanted to get a voice of experience before I went at the aluminum with a screw driver or blade or pryer -- any chemical to dissolve the gasket and cement overnight?

    Best way to pull off the pulley ?
     
  4. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    12,662
    San Carlos, CA
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    Mitchell Le
    #4 yelcab, May 26, 2020
    No chemical will dissolve that asbestos gasket.
     
    thorn likes this.
  5. thorn

    thorn F1 Rookie
    Silver Subscribed

    Aug 7, 2012
    3,322
    Tallahassee, FL
    #5 thorn, May 26, 2020
    Use a plastic scraper/spatula and force it into the gap.
     
  6. Ferrari Tech

    Ferrari Tech Formula 3

    Mar 5, 2010
    1,126
    Georgia
    Full Name:
    Wade Williams
    #6 Ferrari Tech, May 27, 2020
    Just beat on it until it calls a lawyer.
     
    2NA and tbakowsky like this.
  7. 2NA

    2NA F1 World Champ
    Consultant Owner Professional Ferrari Technician

    Dec 29, 2006
    18,214
    Twin Cities
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    Tim Keseluk
    #7 2NA, May 27, 2020
    Depending on when it was last apart and by whom, a good careful whack might get it loose.
     
    Jdubbya likes this.
  8. absostone

    absostone F1 Veteran
    Silver Subscribed

    Jul 28, 2008
    9,253
    #8 absostone, May 28, 2020
    After a small gap Wood shim your friend.
     
  9. tbakowsky

    tbakowsky F1 World Champ
    Consultant Professional Ferrari Technician

    Sep 18, 2002
    19,381
    The Cold North
    Full Name:
    Tom
    #9 tbakowsky, May 28, 2020
    Hit the seam where the pump bolts up to the housing with a dead blow hammer. She should come loose. However if the studs are corroded then some penatrant may be needed, but that is rather rare. All else fails, just drop it off a roof..should be good..;)
     
    brian.s and 2NA like this.
  10. NYCFERRARIS

    NYCFERRARIS Formula 3

    Mar 2, 2004
    1,009
    #10 NYCFERRARIS, May 29, 2020
    HOORAY! - the razor blade - increasing plastic wedge method worked like a charm - I got different size plastic wedges used for spacing and leveling floor tiling - ( real cheap) and it separated .

    Now to remove the bolt and pull the very expensive pully w/o damaging it -- anyone have a best method -- I don't have a hydraulic press but don't think I should need one with a good technique.
     

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