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Urgent Gear box help

Discussion in '308/328' started by Rod, Nov 2, 2019.

  1. Rod

    Rod Formula Junior

    Jan 18, 2004
    858
    South Derbyshire
    Full Name:
    Rod
    Hi... so with the help of another F-Chatter we set out to change the shift shaft seals today.. (all now completed) however when we removed the gearbox plug there were 3 items attached to the magnet. We still have the gearbox sump removed...

    Can any one tell me what these parts are? what they do? do i have a major problem? The small casting looks like it may been broken for some time looking at the broke surface.

    I''ve been driving the car with no problems changing gear...?

    Appreciate any advice.. thanks
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  3. mwr4440

    mwr4440 Four Time F1 World Champ
    Rossa Subscribed

    Jun 8, 2007
    43,122
    Bavaria, The 'Other' Germany
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    Mark W.R.
    When you took the tranny pan off were all the springs and balls accounted for?
     
  4. Rod

    Rod Formula Junior

    Jan 18, 2004
    858
    South Derbyshire
    Full Name:
    Rod
    Yes we were super careful... all three springs and bearings accounted for...


     
  5. Brian Harper

    Brian Harper F1 Rookie
    Owner

    Feb 17, 2006
    3,825
    San Jose area
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    Brian Harper
  6. Brian Harper

    Brian Harper F1 Rookie
    Owner

    Feb 17, 2006
    3,825
    San Jose area
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    Brian Harper
    Here it is. Check the parts book for the layshaft parts in the transmission.
    I don't know how urgent or serious it is, but these sure look like they are your mystery parts.
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  8. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    10,526
    San Carlos, CA
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    Mitchell Le
    Those are spring-loaded pins to keep the dogteeth centered and balanced in the middle of the slider as the synchro ring slides in and out. Having one falling out to the bottom of the gearbox means you have a rebuild coming. Drive this at your own risk. If one of these things finds its way into the middle of the gears, it's major damage.
     
    Robz328 and Rod like this.
  9. Rifledriver

    Rifledriver Two Time F1 World Champ

    Apr 29, 2004
    27,086
    Austin TX
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    Brian Crall

    I have never seen that happen but it is only a matter of time before it gets stuck in a gear or prevents selection of a gear. It was quite common on earlier Testarossas until a redesign was done. It needs to be removed and fixed. Park it.
     
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  10. Rod

    Rod Formula Junior

    Jan 18, 2004
    858
    South Derbyshire
    Full Name:
    Rod
    Thanks, is this a weakness of the gearbox? will it only cause damage if another fails and get clogged?



     
  11. yelcab

    yelcab F1 World Champ
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    Nov 29, 2001
    10,526
    San Carlos, CA
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    Mitchell Le
    I am into Porsche gearboxes as well and I have never seen those pins used on dogteeth. It seems to be a bad thing.
     
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  13. Rifledriver

    Rifledriver Two Time F1 World Champ

    Apr 29, 2004
    27,086
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    Brian Crall

    One of the few benefits of Porsche style syncros is they also perform as a detent for the slider. Not always a good thing. Many, possibly most transmissions use the same idea of the Ferrari trans and it works quite well. For those to break in any but early Testarossa transmissions is very rare.
     
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  14. Rod

    Rod Formula Junior

    Jan 18, 2004
    858
    South Derbyshire
    Full Name:
    Rod
    assuming that just one has broke, should I be driving the car? is it putting stress on the remaining parts?
     
  15. Rifledriver

    Rifledriver Two Time F1 World Champ

    Apr 29, 2004
    27,086
    Austin TX
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    Brian Crall
    No. It is not a question of stressing other parts. It is a question of getting stranded in a known broken car and having the unaccounted for part damaging really expensive and very hard to find parts because you chose to ignore the warning sign the broken parts are trying to give you.


    I already said it.....PARK IT.
     
    Saabguy, BOKE, waymar and 3 others like this.
  16. derekw

    derekw Formula 3

    Sep 7, 2010
    1,308
    London, UK
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    Derek W
    Rod, You only found one half of the broken "T" piece. If the car was shifting ok with just two remaining it should be ok but if that other half comes out and gets between gears it could get expensive quickly. I would at least take the pan off again and go fishing with a magnet and stiff bent wires to try to find it before driving or pulling the drivetrain.
     
    Rod likes this.
  17. thorn

    thorn F1 Rookie
    Silver Subscribed

    Aug 7, 2012
    2,886
    Tallahassee, FL
    Hell. NO.

    Don't drive it, at all. Not even onto a towtruck bed or lift. Engine off, put it in neutral and push it if it has to be moved.
     
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  18. Rifledriver

    Rifledriver Two Time F1 World Champ

    Apr 29, 2004
    27,086
    Austin TX
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    Brian Crall

    Take it out.
     
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  19. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    10,526
    San Carlos, CA
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    Mitchell Le
    Rod, park it until you fix it. The way it is now, it's already a pretty big bill. You don't want to go inside a gearbox (engine out) and just put these pins back without replacing some syncros, dogs, sliders and any worn gear. I cannot speak for the UK, but in the US, this is going to start at $5k. If you drive it and a piece gets into a spinning set of gears, you can multiply that by 2x very quickly.

    P A R K - I T
     
  20. Vonbarron

    Vonbarron Formula Junior
    Rossa Subscribed Owner

    Aug 26, 2014
    939
    Sammamish Washington
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    S Barron
    The good news here is that I have an available spare transmission. No idea condition other than it looks pretty good
     
  21. mike32

    mike32 F1 Rookie

    May 13, 2016
    3,194
    Uk
    You are not serious about driving it are you ? Crackers idea
     
  22. Casino Square

    Casino Square Formula 3

    Apr 21, 2004
    1,694
    Hong Kong / USA
    Full Name:
    Andrew
    Park. Big metal bits rolling around inside the case? You really don't need us to tell you it's a bad idea to operate the car. Tow it to a shop and have the work done. Otherwise a $5K bill will be a $10K bill.
     
  23. radlu

    radlu Formula Junior

    Jun 6, 2005
    342
    Get repaired ASAp. If not, more parts to fall, which means more damage. Guaranteed.
     
  24. miketuason

    miketuason F1 World Champ
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    Feb 24, 2006
    14,218
    Cerritos, CA.
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    It’s the little things that can cause big problems.
     
  25. Ferrari Tech

    Ferrari Tech Formula Junior

    Mar 5, 2010
    642
    Georgia
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    Wade Williams
    100% agree, push it, but don't drive it. Don't even start it again. I have rebuilt many and so far, it is only expensive, much longer and it will get REALLY expensive.
     
  26. Saabguy

    Saabguy Formula 3
    Silver Subscribed

    Mar 28, 2012
    1,576
    Shreveport, LA
    Are you familiar with a product called JB Weld? ;)
     
  27. thorn

    thorn F1 Rookie
    Silver Subscribed

    Aug 7, 2012
    2,886
    Tallahassee, FL
    You squirt that into the fuel tank, right?
     

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