456 Transmission Mounts | FerrariChat

456 Transmission Mounts

Discussion in '456/550/575' started by scowman, May 6, 2018.

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  1. scowman

    scowman F1 Rookie

    Mar 25, 2014
    2,550
    Scottsdale AZ
    Full Name:
    Stu Boogie
    Has anyone replaced their own transmission mounts? Please tell me I don’t need to take the exhaust out:eek:! I have the bolts free on both sides. When I raise the tranny it hits the body (raising the car) before the bolt will clear the mount. The bolts won’t drop far enough because they hit the exhaust.

    The exhaust has shielding on it so I don’t really want to lever it out of the way.

    Ideas?
     
  2. scowman

    scowman F1 Rookie

    Mar 25, 2014
    2,550
    Scottsdale AZ
    Full Name:
    Stu Boogie
    Nobody replaced their tranny mounts?
     
  3. franschman

    franschman Formula Junior

    Dec 18, 2017
    362
    Holland
    Full Name:
    Bart
    I have the exhausts off so it's no problem.
     
  4. scowman

    scowman F1 Rookie

    Mar 25, 2014
    2,550
    Scottsdale AZ
    Full Name:
    Stu Boogie
    Was it hard to take them off? Think i can remove some hangars and get them out of the way?
     
  5. scowman

    scowman F1 Rookie

    Mar 25, 2014
    2,550
    Scottsdale AZ
    Full Name:
    Stu Boogie
    It looks like there are two rear hangers holding up the exhaust. I think I will remove those to see if I can get the bolts out. Unless anyone else has any ideas?
     

    Attached Files:

  6. bergxu

    bergxu Formula 3

    Aug 16, 2005
    1,307
    OnTheSerpentMound
    Full Name:
    Aaron
    Ken,

    From memory, you'll either need to lever the exhausts (gently!!) out of the way with the hangers disconnected (but the system still supported) or else you'll have to drop the pipes.

    Don't take that as gospel though, it has been a loooong time since I had to replace mounts on one.
     
  7. scowman

    scowman F1 Rookie

    Mar 25, 2014
    2,550
    Scottsdale AZ
    Full Name:
    Stu Boogie
    Thanks. What you are saying makes sense from what I viewed underneath. The pipes have a little play in them as is. I figure if I drop one or both hangers I can get just enough for the bolt to drop. I will give that a go tonight.
     
  8. franschman

    franschman Formula Junior

    Dec 18, 2017
    362
    Holland
    Full Name:
    Bart
    'While you're at it...' (dangerous words) It may be wise to take off all pipe joints. On my car I found that half the springs had got stuck/rusted to the bolt that holds them and didn't clamp the pipe sections properly. Just cleaning and some grease will do.

    The exhaust sections that run along the gearbox are rather difficult to remove. I think you need to manouver the box all the way to one side to create enough room to get the other side out.
     
  9. scowman

    scowman F1 Rookie

    Mar 25, 2014
    2,550
    Scottsdale AZ
    Full Name:
    Stu Boogie
    Thanks for the thoughts. I'll take a look when I get in there and let you know what I find.
     
  10. Temple

    Temple Formula Junior

    Jun 13, 2015
    594
    Portland, OR
    Full Name:
    Temple
    I LOVE this thread!! And to answer your question: no, what you doing is perfect!! Best of luck!! I can’t wait to see her- have you named her yet?- returned to her former glory!! Great job!! Possibly an even greater thread!! Beautiful!!

    Temple
     
  11. scowman

    scowman F1 Rookie

    Mar 25, 2014
    2,550
    Scottsdale AZ
    Full Name:
    Stu Boogie
    So I finally got the courage to crawl under and size it up. I'm afraid the hanger trick isn't going to work. The pipes are too fat and tight. So I'm going to have to drop the pipes. There is something I hate about exhaust work... I think in all my years I've never been satisfied with my results. Maybe this is an opportunity to change that. Anyway, I need some Seafoam or PB Blaster to loosen those nuts... So it looks like a weekend project.:confused:
     
  12. franschman

    franschman Formula Junior

    Dec 18, 2017
    362
    Holland
    Full Name:
    Bart
  13. Laserguru

    Laserguru Formula 3
    Owner Silver Subscribed

    Aug 7, 2016
    1,255
    New Hampshire
    Full Name:
    Eric
    Ahhh, drat. Good luck. I hate exhaust....rusty, thermally seized, all that stuff. Hope it plays nice.
     
  14. Ferrari Tech

    Ferrari Tech Formula 3

    Mar 5, 2010
    1,217
    Georgia
    Full Name:
    Wade Williams
    You need to look very carefully at the trans axle and make sure you have enough room to get the mounts out without taking the trans axle out.
    If I remember correctly, there is NOT enough room to raise the trans and take the mounts out. 550/575 are different I think too and can be done without dropping the trans. Just FYI.
     
  15. scowman

    scowman F1 Rookie

    Mar 25, 2014
    2,550
    Scottsdale AZ
    Full Name:
    Stu Boogie
    Thanks for the heads up. I know some of the other folks in this thread have changed the mounts. Did you guys have to drop the trans?
     
  16. Canuck550

    Canuck550 Formula Junior

    Sep 8, 2015
    462
    Incognito
    Full Name:
    RJA
    Same issue, while I had my tech replace my clutch he mentioned we should do the trans mounts as it would be impossible without pulling exhaust and trans.
    Sold me on doing the trans mounts at same time as the clutch ...no brainer
     
  17. scowman

    scowman F1 Rookie

    Mar 25, 2014
    2,550
    Scottsdale AZ
    Full Name:
    Stu Boogie
    Interesting. My transaxle is disconnected from my suspension right so it does not impede the upward movement of the transmission. That is only limited by the tunnel ceiling.

    When I jacked the tranny up it seemed like there was enough room to pull the mounts out but I did not look that closely as the bolts did not clear the mounts.

    Interested in what others who have done this will say.
     
  18. scowman

    scowman F1 Rookie

    Mar 25, 2014
    2,550
    Scottsdale AZ
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    Stu Boogie
    I'm going to have to agree with Merlin & Canuck. There is not enough tunnel clearance to get the tranny mounts out. So I've come this far. Should I go all the way? What does it take to move the tranny? The rear suspension is loose so the only things holding the trranny in place is the drive shaft and shifter linkage. Which way does it go to clear the mounts? Back I would guess. It only need to go like 3-4 inches to clear the mount.

    This of course brings up more mission creep. Clutch replacement anyone?

    Or do I retreat and abandon the mission until I really need to replace the clutch? The tranny mounts don't seem to be in really bad shape like the motor mounts...

    UGH!!! :mad:

    Thoughts please.
     
  19. scowman

    scowman F1 Rookie

    Mar 25, 2014
    2,550
    Scottsdale AZ
    Full Name:
    Stu Boogie
    So looking at the torque tube, there are 8 bolts at both ends (tranny & clutch). I think I can separate the torque tube at either end. So my question is which end is easiest/best? Maybe the clutch end? Then I just need to slide it all back about 4 inches and I'm good?

    Sounds too good to be true.
     
  20. scowman

    scowman F1 Rookie

    Mar 25, 2014
    2,550
    Scottsdale AZ
    Full Name:
    Stu Boogie
    Tried to remove the torque tube bolts this morning. No way to get to the top bolts (front and rear) without removing the cats or the center resonator. This job keeps creeping. At this point doing the clutch is not much farther along. So do I retreat and wait for the inevitable clutch replacement? Or do I do the clutch now that I'm 3/4 of the way to the clutch housing bolts?

    The clutch has 36k miles on it.

    Ugh!:confused:
     
  21. asgor

    asgor Formula Junior

    Sep 8, 2016
    716
    Virginia, USA
    Clutch replacement may not be as inevitable as you think on a 456 - or other V12 of the same era.

    I can't recall any posts in recent history in this forum discussing the need to replace the clutch on these cars due to slipping or wear. Even a 80k-mile 1995 456GT that sold on BaT a few months ago (owned by a F-Chat's frequent contributor) didn't have a new clutch in the otherwise *extensive* list of maintenance and repair items.
     
  22. scowman

    scowman F1 Rookie

    Mar 25, 2014
    2,550
    Scottsdale AZ
    Full Name:
    Stu Boogie
    Good point. My clutch seems strong. But what about those tranny mounts? Going on 25 years now.
     
  23. Cribbj

    Cribbj Formula 3
    BANNED

    My 550's clutch was toast at 14K due to all the city driving the PO's subjected it to. Others have had similar experiences. You'll know when it's nearing EOL when the pedal effort increases quite a bit. If you can get a look at the friction disc, see if you can still see the radial grooves, and/or measure the thickness of the friction material. On our 550's there's an inspection port on the bellhousing for this purpose.
     
  24. scowman

    scowman F1 Rookie

    Mar 25, 2014
    2,550
    Scottsdale AZ
    Full Name:
    Stu Boogie
    Good advice. Thanks
     

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