308 Engine Reaction Rod "buffers" | FerrariChat

308 Engine Reaction Rod "buffers"

Discussion in '308/328' started by Mike C, Jun 26, 2010.

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  1. Mike C

    Mike C F1 Veteran
    Lifetime Rossa Owner

    Aug 3, 2002
    6,081
    Southeast USA
    Full Name:
    Mike Charness
    #1 Mike C, Jun 26, 2010
    Last edited by a moderator: Sep 7, 2017
    The rearmost buffer/bushing in my reaction rod was out of round, so I bought a new one from Rutlands. However, the local shop can't get the old one out. There's not much of a circumference to fit even a custom tool to. Have any of you guys done that before, and if so, how?

    I really liked Kermit's *adjustable* replacement reaction rod, but of course he and Durable One are long gone (photo below of Stephen Rochlin's old car with one installed) and I've just got the stock one.
    Image Unavailable, Please Login
     
  2. thecarreaper

    thecarreaper F1 World Champ
    Silver Subscribed

    Sep 30, 2003
    18,080
    Savannah
    #2 thecarreaper, Jun 27, 2010
    Last edited: Jun 27, 2010
    March Performance has turnbuckles like that for custom alternator installs, seems you you use one of those and some shock or suspension bushings and mount it that way.

    or, call some of the f cars parts guys in the UK, i bet they may have what you need.

    ps: that looks like you could get the turnbuckle from a boat place, then match up bushings. it looks like things i have seen on sailboat tackle.
     
  3. Nurburgringer

    Nurburgringer F1 World Champ

    Jan 3, 2009
    11,187
    Texass
    I used 2 big sockets and a big bench vice to R&R both bushings a few months ago during an engine-out major.
    They didnt exactly fall right out, but wasn't too tough to do.
    Unless you're changing the engine mounts (in which case a lot of other interfaces would be misaligned) the OEM rod should not need changing/adjusting - not sure I see the purpose of an adjustable rod?
     
  4. Mike C

    Mike C F1 Veteran
    Lifetime Rossa Owner

    Aug 3, 2002
    6,081
    Southeast USA
    Full Name:
    Mike Charness
    Thanks -I'll suggest that to them. Can you be more descriptive as to how you used the sockets with the vise?
    Steven apparenly put this gadget on his 308 race car, since "hard breaking allowed the engine to move to much and it disrupted shifting." That's not a problem for me so the stock reaction rod is jut fine... *IF* I can replace that rear bushing/buffer!
     
  5. chrismorse

    chrismorse Formula 3

    Feb 16, 2004
    2,150
    way north california
    Full Name:
    chris morse
    Hi Mike,

    I am assuming that the new rubber bushing has an outter and inner sleeve of steel.
    You can use two sockets and a vise to push out the old bushing and press in the new one. One socket should be a close fit to the inside diameter of the brace sleeve and the other socket should be a close fit on the outside of the new rubber bushing's metal sleeve.
    If you don't have a vise you can use the largest, (high strength) bolt that will fit through the sockets and the bushing's inner sleeve.
    This is the same "backyard" approach I used to replace the orriginal Koni shock top and bottom mounting bushings.
    Assemble the two sockets, one on either side of the old bushing so that the flat side of the smaller socket is set to push the bushing through the reaction rod into the open side of the larger socket. Centering all three components is critical, so that the smaller socket pushes only on the outter bushing sleeve, while the larger socket supports the reaction rod.
    Three hands help hold all of the bits in proper alignment while you tighten the handle.
    Sometimes these bushing sleeves are firmly rusted to the part and you might want to use your favorite "break-away" penetrant to ease the disassembly. This of course makes everything stink and get slippery, which makes it tough to maintain alignment.
    You may have to resort to strong language and alcohol.

    Bona Fortuna,
    chris
     
  6. ramosel

    ramosel Formula 3

    Sep 11, 2004
    1,237
    Meadow Vista, CA
    Full Name:
    R Moseley
    BTDT - Yup, burn it out. Torch the bushing rubber only - makes a mess, catches fire, smokes enough to get the neighbors worried. You can then punch out the center sleeve and dig out the rubber remants. Put a hack saw blade through the bushing and put it back on the frame. Carefully slice through the outer sleeve. Once you get close breaking through, the sleeve will start to collapse and bind on the blade. You can now remove the blade and a simple drift or small chisel will make the outer sleeve just fall out. Blast it, paint it, plate it... press in the new bushing.



    Rick
     

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