456 Shift Gate Gasket Disintegrated | FerrariChat

456 Shift Gate Gasket Disintegrated

Discussion in '456/550/575' started by scowman, Feb 3, 2019.

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  1. scowman

    scowman Formula 3

    Mar 25, 2014
    2,498
    Scottsdale AZ
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    Stu Boogie
    1995 456 GT.

    I have been working on the car a lot and running it at idle, but not driving it. I finally drove it today and had trouble shifting. The shift gate was loose. I made it home and found the gasket underneath the gate had disintegrated completely. I have only driven the car a couple of times and had no trobule shifting.

    Looks like it's NLA most places.

    Anyone seen the likes of this or know were to get a replacement?

    #8

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  2. scowman

    scowman Formula 3

    Mar 25, 2014
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    RHD gasket is avaible and only $22. Maybe I can get it to fit or use it as a template for a custome gasket? It's not really a gasket, more like a spacer.
     
  3. fatbillybob

    fatbillybob Two Time F1 World Champ
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    Aug 10, 2002
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    socal
    Looks more like a spacer can't you just use washers at all 4 corners if the gate needs to be at a certain altitude?

    Looks kinda simple. Could you cut one with a plasma cutter?
     
  4. Dave rocks

    Dave rocks F1 World Champ
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    355's have a similar part which also desintigrates. Get one machined from acetal.
     
  5. scowman

    scowman Formula 3

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    Thanks, Where might I start on that?
     
  6. Dave rocks

    Dave rocks F1 World Champ
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    Well, you will need to make a pattern from a good part (loaner?) or the shifter box.
     
  7. scowman

    scowman Formula 3

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    Right. If I can get the thickness I think I can fab one myself from the shift gate.
     
  8. ferraridriver

    ferraridriver F1 Rookie

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  9. Dave rocks

    Dave rocks F1 World Champ
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    Sure, it's not a detailed or tight tolerance part. Personally, I'd rather machine one. And the 3D print would not be cheap as it's a larger part.

    I did check this morning and these are NLA. But with Ferrari, that can change :)
     
  10. scowman

    scowman Formula 3

    Mar 25, 2014
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    I kinda like the washer idea. At least until I can get a perm replacement.

    The gate itself is pretty think and strong. Not sure about the fiberglass box it sits on. The spacer might be spreading the load along the edges and washers might put too much load on corners? Not sure about my physics there.
     
  11. JimEakin

    JimEakin Formula Junior

    Jun 13, 2015
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    168955 GASKET at RicambiAmerica.
     
  12. Dave rocks

    Dave rocks F1 World Champ
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    It's P/N: 157884
     
  13. root

    root Formula Junior
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    You may want to check if there is a TAP Plastics store in your area.
     
  14. ferraridriver

    ferraridriver F1 Rookie

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    Black acetal sheet is dirt cheap online, just get the right thickness.

    A hack saw, drill, and Dremel tool should do it.
     
  15. scowman

    scowman Formula 3

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    #15 scowman, Feb 5, 2019
    Last edited: Feb 5, 2019
    I f
    My wife’s cutting boards are made of that stuff. She’s got too many anyway. She won’t miss one will she?

    I figure I can use my wood planer on plastics. Just use the quick feed to keep it from melting.

    Then I can use my table saw to get it square. Then drill and dremel from there. Maybe make two at a time for the inevitable screw up.

    Any idea on thinkckness?

    This one looks promising. I think I could get two out of this.
     

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  16. scowman

    scowman Formula 3

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    #16 scowman, Feb 5, 2019
    Last edited: Feb 5, 2019
    The housing is aluminum. Not sure why I thought it was fibergalss.. I'm pretty sure the washers will work as both the housing and the gate seem very sturdy. I'm going with that as a temporary fix until I figure the spacer out.

    I'm trying to fiugre out the tickness of the spacer "gasket." Is the gate intended to fit flush with the console deck? That's a pretty thick spacer if it does.
     
  17. Canuck550

    Canuck550 Formula Junior

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    based on what I see, you can determine thickness by having someone just measure the drop of the top of the gate to the rest of the console top, at the front and back.....
    Is the shiftier gate on a proper car, flush, just below the surface or above?
    Get that dimension add the washers, to that same depth and determine the thickness with the washers, get right plastic thickness, cut and done.
    I would measure depth for you on the 550 however may differ from 456
     
  18. Canuck550

    Canuck550 Formula Junior

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    or if a member could be so kind to remove their gate in 5 min and measure that would be best
    :)
     
  19. Dave rocks

    Dave rocks F1 World Champ
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    You can get Acetal from McMaster for cheap - no need to steal the wife's cutting board :)
     
  20. root

    root Formula Junior
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    On the 550 the bottom of the metal gated plate sits flush or hair below the center console deck. See attached picture.
     

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  21. scowman

    scowman Formula 3

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    That's intersting. I was thinking flush..
     
  22. scowman

    scowman Formula 3

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    #22 scowman, Feb 6, 2019
    Last edited: Feb 6, 2019
    You know this is interesting. The part you quote is for the 456M, not the GT.

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    But the shifter box is the same...

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    Although the gate is different.

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    I'm wondering if the 456M spacer can be used on the 456GT. How different can it be if the box is the same? Different thickness I guess. Maybe that address the flush mount console vs sitting above it. Guess I could plane it down or something.
     
  23. scowman

    scowman Formula 3

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    #23 scowman, Feb 6, 2019
    Last edited: Feb 6, 2019
    456M gate is raised.

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    And the 456GT gate is flush

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    It looks like the 456M gate is wider and higher to cover the ugly, misligned console gap of the 456 GT.

    Perhaps that accounts for the difference in spacers.

    To me the M looks so much more elegant than the GT.

    Probalby not worth it to put an M console in a GT...
     
  24. cls

    cls Formula 3

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    That shift plate is not aligned correctly. There is play in both the spacer and the plate.
     
  25. JimEakin

    JimEakin Formula Junior

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    But if it was aligned to fit in the center of the cutout, the left-right gear shift alignment would be off.
     

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