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355 flywheel rebuilding?

Discussion in '348/355' started by Marcelo0131, Jan 21, 2012.

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  1. Marcelo0131

    Marcelo0131 Karting

    Oct 14, 2009
    90
    Stanton, CA.
    Full Name:
    Marcelo
    #1 Marcelo0131, Jan 21, 2012
    Last edited by a moderator: Sep 7, 2017
    Looking for some leads on rebuilding the 355 flywheel. I'll be contacting Bradon, but would like to see if theres any other recommended suppliers.
    Also need a replacement clutch disc. Reline or new?
    I have the pumpkin removed, but not sure how to remove flywheel from pupmkin cover.
    or if i should remove pressure plate without marking it's relation to the flywheel to put it back in the same clocking position.
    F1 actuator looks good, no leaks.
    Does look like the flywheel was throwing some grease and maybe the seals on the shaft that seal on the flywheel maybe leaking slightly. not sure till i take the pressure plate off but looks wet in there.
    Also whats going to happen when all is installed and battery switch is turned on, and i try the F1 system again ..??
    I've got a good independant Ferrari mech locally, may need him to reset it..little ackward..
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  2. Mitch Alsup

    Mitch Alsup F1 Veteran

    Nov 4, 2003
    9,724
    #2 Mitch Alsup, Jan 21, 2012
    I have had to rebuild the Dual Mass FlyWheel 4 times now, but we have had to do nothing to the pressure plate or disk excepting for a light turn durring one of the rebuilds, and I am still on the original clutch disk! (after 65K total miles and 5K track miles)

    Basically, rebuilding the DMFW is fairly simple, a) disassemble, b) clean, c) reassemble with new o-ring, d) fill with damping grease, e) place back in pumpkin.

    In order to help the MSFW live longer, I had the shop put a challenge clutch cooling thing-a-ma-jig on the pumpkin. This dramatically lowers the DMFW and clutch temperatures.
     
  3. ernie

    ernie Two Time F1 World Champ
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    #3 ernie, Jan 21, 2012
    Last edited: Jan 21, 2012
    While you have it off, highly I suggest you replace the triple seals, and the little o-ring on the output shaft.

    As for getting the ring nut off the back of the bell housing/pumpkin, first remove the 4 nuts holding the little cover, on the back, in place. Then you will need to remove the small allen locking screw. Next using an impact wrench and a ring nut socket remove the nut. The type of socket you will need is a 76mm 1/2" drive wheel bearing socket, can be bought at the parts store for about $20. Here is what is looks like -> http://ferrarichat.com/forum/showpost.php?p=140328264&postcount=347

    You can get your old clutch relined. Friction Materials in Long Beach is pretty good (562) 436-4224, and fairly priced. Daniel-san at Ricambi has the triple seals, and o-ring.
     
  4. ernie

    ernie Two Time F1 World Champ
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    #4 ernie, Jan 21, 2012
    Oh yeah almost forgot.

    After you put it back together, with the relined/new clutch, you will need to reset the Point of Initial Slip (PIS). Run a search of the archives on how to do this.
     
  5. ernie

    ernie Two Time F1 World Champ
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    #5 ernie, Jan 21, 2012
  6. Marcelo0131

    Marcelo0131 Karting

    Oct 14, 2009
    90
    Stanton, CA.
    Full Name:
    Marcelo
    #6 Marcelo0131, Jan 21, 2012
    Awesome info. I hade the PIS reset once at my usual mech. He did some sort of ign key , brake padal, paddle thing... IDK.
    I'm going to replace all the seals, i just don't know what i looking at yet...
    I've got a cuople on the bottom of the traany that r leaking..
     
  7. ernie

    ernie Two Time F1 World Champ
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    #7 ernie, Jan 22, 2012
    Is it maybe the shift shaft seal?
     
  8. Extreme

    Extreme F1 Rookie

    May 26, 2010
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    #8 Extreme, Jan 22, 2012
    now that's a tongue twister.
     
  9. Marcelo0131

    Marcelo0131 Karting

    Oct 14, 2009
    90
    Stanton, CA.
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    Marcelo
    #9 Marcelo0131, Jan 22, 2012
    No, not the shift shaft seal, there's a couple of retangular access plates on the bottom of the trans that are leaking.
    I saw them on ricambi's site. I also need to replace the seals on the shaft. Not sure which ones are the triple seals.
    More concerned about the flywheel and rebuilding and the cost .
    (how much should i insure it for when shipping?)
     
  10. strosek

    strosek Karting

    Sep 23, 2010
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    #10 strosek, Jan 22, 2012
    Ernie
    Where is the allen lock screw that you referr to, do you have a picture?
    Thanks,
    Eric
     
  11. LmnsBlu355

    LmnsBlu355 Formula Junior

    Dec 28, 2009
    284
    NY
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    #11 LmnsBlu355, Jan 22, 2012
    Not that hard to do it yourself. There are great threads here and we can walk u thru it. If you've gotten this far, you obviously have the skills. I did mine last year. Just about $150 worth of kluber grease and I replaced the bearings even though they were probably fine. If u need the friction surface machined, it will. Be a lot lighter to ship disassembled or have a local machine shop to it. The description of the proper technique is here too.
     
  12. mowater

    mowater Formula Junior

    May 24, 2004
    362
    #12 mowater, Jan 22, 2012
    After feeling like a burden for this past year on Fchat with all my questions, I love the fact that now my threads are helping others.

    Marcelo, PLEASE CONTACT ME anytime at [email protected] if you ever need any info brother. I have been through a LOT with my 355 F1 and although not a mechanic myself, I have done extensive reading and spoke with many reputable people who have helped along the way.

    As for PIS, you are right, it is "ign key, brake pedal, paddle thing" related.

    Thanks to Ed (rustybits), READ HERE:
    http://ferrarichat.com/forum/showpost.php?p=141098979&postcount=39
     
  13. spaghetti_jet

    spaghetti_jet Formula Junior

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    #13 spaghetti_jet, Jan 22, 2012
  14. mad dog

    mad dog Formula Junior

    Jan 5, 2006
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    #14 mad dog, Jan 22, 2012
    Just bought a bulk supply of kluber if you need any. Seems ferrari have been buying by the ton and we had trouble getting smaller quantities than 25kilo tubs. http://maddogclutches.co.uk/
     
  15. ernie

    ernie Two Time F1 World Champ
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    #15 ernie, Jan 22, 2012
    Last edited: Jan 22, 2012
    It's located in the middle of the ring nut. There has been much debate on that little screw. It is my opinion that it's purpose is to lock the ring nut in place via the extra force exerted by the center allen screw, also known as the "grub screw" as named by fatbillybob. You can see a picture of it here in this thread http://www.ferrarichat.com/forum/showthread.php?p=138248218&highlight
     
  16. ernie

    ernie Two Time F1 World Champ
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    #16 ernie, Jan 22, 2012
    That is why I always encourage people to post. Not only does it help the original poster, but it helps out the next guy. It's even better when pics are included. So thanks for posting up your issue. The more, the merrier.
     
  17. Marcelo0131

    Marcelo0131 Karting

    Oct 14, 2009
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    Stanton, CA.
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    #17 Marcelo0131, Jan 23, 2012
    What about the orings that hold all the grease inside, did you replace those?
    Any one know where Flywheel orings can be purchased?
    Need to do a search for flywheel rebuild.


    How much for need qty of grease shipped to Ca. USA.

    I'm going to search for the ring nut and pop the flywheel out..
    I'll post up some more pics soon .
     
  18. shado

    shado Guest

    May 5, 2011
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    #18 shado, Jan 23, 2012
    You can buy the o ring from mad dog. I have bought them from him as well as the kluber grease.
    His outfit is very knowledgeable and profesional.
     
  19. saw1998

    saw1998 F1 Veteran

    Jun 8, 2008
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    #19 saw1998, Jan 23, 2012
    Very well-stated Ernie. :)
     
  20. Marcelo0131

    Marcelo0131 Karting

    Oct 14, 2009
    90
    Stanton, CA.
    Full Name:
    Marcelo
    #20 Marcelo0131, Jan 23, 2012
    Last edited by a moderator: Sep 7, 2017
    Went to Pepboys an got the wheelbearing socket.. Came off without a hitch .
    Here's the photos of what i found. Phones pics so the're not that great.
    Clutch cover is coated with oil and grime.
    I think the most if not all the fluid is coming from the transmission shaft seals.
    Very wet with clean oil on clutch disc hub and the rear clutch surface closest to the bumper is wore more than the front with noticable deposits in the rivet sections.

    Flywheel is clean, no signs of grease coming out that i can see, but i dont know where to look. I do have a slight rattle on shutdown. ( like the marble on tin sound.) Grease must have broken down.
    Still trying to figure out how the cover is so dirty with the flywheel being so clean .
    And it seems somewhat dry around the F1 unit. Altought the cover bearing that supports the flywheel was soaked in oil. Must be getting flung off before it can ride up the back of the flywheel ? ??
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  21. ernie

    ernie Two Time F1 World Champ
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    #21 ernie, Jan 23, 2012
    Nice job.

    Looks like the flywheel needs to get repacked. Bunch of grease all over the place. Change out all the seals while you are in there.
     
  22. Extreme

    Extreme F1 Rookie

    May 26, 2010
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    #22 Extreme, Jan 23, 2012
    Question for the OP
    What made you decide to open up the pumpkin in first place? Where you having some signs of trouble?
     
  23. Marcelo0131

    Marcelo0131 Karting

    Oct 14, 2009
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    Stanton, CA.
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    Marcelo
    #23 Marcelo0131, Jan 23, 2012
    The began to slip under heavy load.

    Where is the grease coming from? will it leak out from the center?
    I was under the impression that there was a large dia oring the sealed the od of the flywheel and it would be flung out while the flywheel is spinning.
    the wetness i see is more like tranny oil from the seals around the shaft.
    What am i getting myself into rebuilding my flywheel ?
     
  24. Carmellini

    Carmellini Formula Junior

    Jul 16, 2019
    968
    #24 Carmellini, Mar 1, 2022
    Mitch, what is this thing-a-ma-jig?
     
  25. Carmellini

    Carmellini Formula Junior

    Jul 16, 2019
    968
    #25 Carmellini, Mar 1, 2022
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