Fixing Waterpump | FerrariChat

Fixing Waterpump

Discussion in '348/355' started by jssans, Mar 25, 2012.

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  1. jssans

    jssans Formula Junior

    Jun 1, 2005
    839
    St. Louis
    Full Name:
    Josh
    Does anyone here have experience changing out a waterpump with the engine in on a F355?
     
  2. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    13,457
    San Carlos, CA
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    Mitchell Le
    Plugzit has. First thing is remove gas tank. Replace water pump, reinstall gas tank.
     
  3. ernieps

    ernieps Rookie

    Jun 1, 2010
    31
    New York USA
    Yep thats the way I did it!!
     
  4. plugzit

    plugzit F1 Veteran
    Silver Subscribed

    Dec 1, 2004
    7,765
    Redondo Beach, CA
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    Bruce Bogart
    Like they said. BE AWARE that the clearance impeller to housing is very small. 1mm. If you get (less) than that you may have a problem with impeller rubbing on the housing when the motor warms. Check that clearance before permanent install. If you get a problem with that, PM me.
     
  5. strosek

    strosek Karting

    Sep 23, 2010
    79
    Arkansas, USA
    Full Name:
    Eric
    I just did it last week without removing the tank. I pulled the whole housing and then pulled the pump. It was not easy and it took quite some time, but it can be done.
     
  6. jssans

    jssans Formula Junior

    Jun 1, 2005
    839
    St. Louis
    Full Name:
    Josh
    Thanks guys. Sounds like a piece of cake. I'm psyched.
    So if I'm removing the gas tank would I be correct in assuming that I will be taking the waterpump out from beneath the car instead of on top. I have replaced the tensioner for the belt that the alternator and waterpump run off of from the bottom of the car already. Not easy.
     
  7. shado

    shado Guest

    May 5, 2011
    267
    London
    Full Name:
    Shado Ra
    #7 shado, Mar 26, 2012
    Last edited by a moderator: Sep 7, 2017
    Jssans, please dont try it with the tank in. There is a siht load of pending problems just waiting to mess up your day.
    As well as having to have hands as small as my little daughters. There are the bottom 3 10mil nuts and washers just waiting to drop into/behind the belt covers. This is because the space to work in is so small that only two of your fingers from various directions, will be able to fit. And you will be working totaly blind. Then you have the challenge of getting the dam pump out from the top......good luck with that:)
    But if you do decide to try with the tank in and a washer or nut drops. Chances are you are taking the tank out anyway, as well as the cam belt covers, and good luck in finding it;) Then the words of "Shado" will come back to haunt you, over and over again......even in your sleep;)
    I have included two of my pictures showing the lower 3 nuts (with the tank removed). Look at them, study them, have a laugh and then forget the idea of the tank in method. IMO its a BS idea.
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  8. tbakowsky

    tbakowsky F1 World Champ
    Consultant Professional Ferrari Technician

    Sep 18, 2002
    19,876
    The Cold North
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    Tom
    Are you sure you got enough sealant on there??
     
  9. 2NA

    2NA F1 World Champ
    Consultant Owner Professional Ferrari Technician

    Dec 29, 2006
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    Tim Keseluk
    Really, any sealant is too much. The 355 pump is sealed by an o-ring that is a pretty snug fit. A tiny bit of silicone grease is all you need.
     
  10. Extreme

    Extreme F1 Rookie

    May 26, 2010
    2,515
    Northern Utah
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    Erick
    I was going to use some sealant until I saw how tight the oring fits.
     
  11. fatbillybob

    fatbillybob Two Time F1 World Champ
    Consultant Owner

    Aug 10, 2002
    28,735
    socal
    Be careful there are many hazards taking out a gas tank like dropping a drop light with gas fumes and gas on the floor. I would rather pull the motor and do the rest of the service than mess with gas tanks. By the time you do the contortionist thing you could have the motor down.
     
  12. shado

    shado Guest

    May 5, 2011
    267
    London
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    Shado Ra
    #12 shado, Mar 27, 2012
    Last edited: Mar 27, 2012
    What does a little sealant matter around the edge in this particular picture?. I was posting pictures to help the guy see the 3 nuts under it. That picture was taken before i cleaned of the excess around the pump as part of a series of pictures.
    Why dont you as a so called expert post up some advice to help the OP, instead of coming on here being a prick....as usual.
    Small wonder normal posters are reluctant to post pictures up to help other posters with people like you.
    Thank god for proper forum experts like BRANDON, they have changed the game play for this forum IMO.
     
  13. shado

    shado Guest

    May 5, 2011
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    Shado Ra
    Ah I get you. A tiny bit of silicone grease is all you need, however. Any sealant is to much.
    Does that sound about right?
     
  14. 2NA

    2NA F1 World Champ
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    Yes, there isn't any reason to put sealant there. The o-ring should do the job.
     
  15. 2NA

    2NA F1 World Champ
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    #15 2NA, Mar 27, 2012
    Last edited by a moderator: Sep 7, 2017
    That's a good point. There's always some risk around an open fuel system.
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  16. shado

    shado Guest

    May 5, 2011
    267
    London
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    Shado Ra
    So were does the "tiny" bit fit in that you your self said?
    I smeared a little around the flat surface along with the new O ring. Tightening the nuts natrualy squeses out the exess. Any one who knows how the pump fits in will know that no silicon goes into the wayer ways. So what harm has been done? Is there a rule thats been broken?
    Why is it that a guy tried to help a poster and then gets attacked because a little silicon jas not yet been cleaned away.
    Any way lesson learnt, **** giving any one any form of help here. I should have remained a lurker and thats were i am going back.
     
  17. yelcab

    yelcab F1 World Champ
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    Nov 29, 2001
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    Shado,

    Ease up on the coffee. The internet is a wide open forum and there will be agreement and disagreement from time to time. No need to get so bent out of shape by just one comment.

    Please continue to post. Yout contribution is appreciated.
     
  18. 2NA

    2NA F1 World Champ
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    #18 2NA, Mar 27, 2012
    Last edited by a moderator: Sep 7, 2017
    Just a little "lube" on the o-ring so it slides in without too much of a fight. There's no reason to put anything on the flat surfaces, that's not where the sealing occurs.

    Try not to be so thin-skinned. tbakowsky was just pulling your chain.
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  19. bcwawright

    bcwawright F1 Veteran

    Jul 8, 2006
    5,234
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    Bruce
    You know the old saying..."Don't let the door hit you in the vag^na on the way out"
     

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