R/R Waterpump on a 79 308GTB | FerrariChat

R/R Waterpump on a 79 308GTB

Discussion in 'Technical Q&A' started by christopher, Nov 29, 2003.

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  1. christopher

    christopher Formula 3

    Nov 29, 2003
    Ontario California
    Full Name:
    Hello Ferrari Gurus,
    I'm going to rebuild the waterpump on my 79, any helpfull hints concerning R/R-ing?
    Thanks, Chris.
  2. Dave

    Dave F1 Rookie

    Apr 15, 2001
    Little Rock
    Full Name:
    David Jones
    Rather than rebuilding your old water-pump,
    you might want to consider buying one of the newer style water-pumps that have the improved bearing and impeller.
    Other than that, you may have to remove cam-belt covers and move A/C compressor out of the way to remove old pump on your car.
    It might also be a good time to replace the thermostat if it is original, and put on a new WP/Alt belt.
  3. Verell

    Verell F1 Veteran
    Consultant Owner

    May 5, 2001
    Groton, MA
    Full Name:
    Verell Boaen
    You'll find quite a few WP rebuilding tips in the following thread:


    The following thread has some vy good(IMHO) tips from while my WP rebuild was in progress a couple of years ago:

    This thread also has quite a bit of useful info:


    The following web sites give WP rebuilding instructions:

    The Online Service Manual ( Go to www.ExpensiveCar.com, & click on 'Ferrari' for table of contents):


    The 308 GTB Register's TechTips WP rebuild procedure:
    Click on [english], then LH menu's [Tech Tips],
    then [Tech Tip #6: Water Pump]

    Good luck!!!
  4. Peter

    Peter F1 Veteran
    Owner Rossa Subscribed

    Dec 21, 2000
    B.C., Canada
    In one of the links Verell provided is my rebuild of my small-bearing waterpump from two years ago and I'd like to update and say that at that time, I had re-used my old seal. I should've put in a new one, since over the last year, my pump has consistently weeped (but not in the first year after that rebuild). When I work on the car this winter, I'm going to install a new seal, plus add new bearings, just in case the inner bearing has suffered from being exposed to coolant.
  5. f355spider

    f355spider F1 World Champ
    Owner Rossa Subscribed

    May 29, 2001
    If the car is a "keeper" you might want to consider replacing with a new large bearing waterpump, as used on the 328. It will probably require a new pulley or have your existing one modified (check the archives for details), but properly tensioned, the stock one is probably fine to rebuild and keep using. It is just that the large bearing model is (supposed to be) more durable and longer lasting.
  6. 308GTS

    308GTS Formula 3

    Dec 27, 2001
    Peter by any chance do you have the part # for the seal and where to get it? If you have the bearing #s I would appreciate that too. I may have the bearing #'s somewhere but I couldn't locate the seal. Thanks.
  7. Verell

    Verell F1 Veteran
    Consultant Owner

    May 5, 2001
    Groton, MA
    Full Name:
    Verell Boaen
    Suggest you go back & read the 3rd link in my post below, that thread has the seal & bearing part#s for the various wp varients.

  8. randall

    randall Formula 3

    Nov 2, 2003
    Portsmouth, VA
    Full Name:
    We need an FAQ maintenance section, with posts like Verrell's in it. It sure would make it convenient for searching and lowering the number of reposts.

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