Distributor Cap | FerrariChat

Distributor Cap

Discussion in '365 GT4 2+2/400/412' started by Highmiler, Sep 19, 2012.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, and others.

  1. Highmiler

    Highmiler Formula Junior

    Dec 8, 2010
    414
    Missouri
    Full Name:
    Greg
    Hi,

    Has anyone figured out how to get the cap off the distributor?
    There seem to be 3 bolts holding the cap to the distributor body. Two are easily reached but the third is way in the back. How and with what can this bolt be loosened so the cap will come off?

    Greg
     
  2. 180 Out

    180 Out Formula 3

    Jan 4, 2012
    1,286
    San Leandro, CA
    Full Name:
    Bill Henley
    On my '83 I just use a short-ish, flat blade screwdriver. You have to line it up blind with the slot in the hold-down screw, and you want to be careful not to drop it.
     
  3. wrxmike

    wrxmike Moderator
    Moderator Owner

    Mar 20, 2004
    7,674
    Full Name:
    Mike
    I use am 8mm 1/4 drive socket, a short extension and a ratchet.
    The short extension clears the wires coming out of the cap and the socket positively locates on the bolt .( A short screwdriver works too, but for me tends to slip out of the slot too easily )
    Once the bolt is loose, I take of the ratchet and turn the extension bar by by hand.
    M
     
  4. Highmiler

    Highmiler Formula Junior

    Dec 8, 2010
    414
    Missouri
    Full Name:
    Greg
    Thanks!
    I had gotten past the box wrench and the long handled screw driver (both failures) when something Ferrari knocked a hole in the back of my hand. So I quit fooling with it and posted this thread. I'll try the next step after I heal up.
    At least the engine doesn't have to come out to get at this bolt.
    Greg
     
  5. blkprlz

    blkprlz Formula 3

    Mar 24, 2007
    2,169
    Tampa bay
    Full Name:
    Bruce
    Too funny! :D We all have done or thought that at one time or another.
     
  6. jacques

    jacques Formula Junior

    May 23, 2006
    877
    Los Angeles/Florida
    That very area is a huge repository of my DNA, also. Those sharp metal edges are murderous..My solution..is to cut the finger-tips off some Mechanics' gloves (not the nitrile ones). I just hate fingerless gloves, but you need to feel in this area with your fingers, or you will never get it done. Next time I go into that area, I'm also going to duct tape and foam those metal edges. Jq.
     
  7. blkprlz

    blkprlz Formula 3

    Mar 24, 2007
    2,169
    Tampa bay
    Full Name:
    Bruce
    I'm thinkin' the next time the engine is pulled, grinding those areas down is job #1 :D
     
  8. SouthJersey400i

    SouthJersey400i Formula 3

    Mar 14, 2007
    1,679
    Romulus, NY (Finger Lakes)
    Full Name:
    Ken Battle
    next time the engine is pulled!!!

    Other than Brett I don't imagine anyone has done it more than once on this forumbut I may be wrong.
    Ken
     
  9. dstacy

    dstacy F1 World Champ
    Owner Rossa Subscribed

    Jan 23, 2006
    11,998
    GMT -5 & GMT +1
    Full Name:
    Dave
    Obviously you haven't actually ever worked on your 400. Look in your service manual. The first step in any procedure says, "Place car on jackstands" and step number 2 always says, "Remove engine, complete drivetrain, and all other parts not welded to the frame." :D
     
  10. Highmiler

    Highmiler Formula Junior

    Dec 8, 2010
    414
    Missouri
    Full Name:
    Greg
    Actually, my manual does not include that statement.
     
  11. jacques

    jacques Formula Junior

    May 23, 2006
    877
    Los Angeles/Florida
    In reference to the slotted screws that secure the dist. cap..on mine... these are round headed staight slot machine screws, and not hex-head, which makes removing the last screw on the backside murderously difficult (for me) to remove.. Is is possible that there are some hex-head or phillips head ones available? Thank you. Jacques.
     
  12. Highmiler

    Highmiler Formula Junior

    Dec 8, 2010
    414
    Missouri
    Full Name:
    Greg
    Somewhere in FerrariChat I spotted a link to a Jag place wherein the shutting down of the passenger side bank of cylenders is discussed. This was the genisis of my wanting the cap off.

    Today I recieved one of "The Last of the Mohecans" Marelli distributer roters. This little jewel is common to the 400i and 512BB and similar in design to the V-12 Jags having the Marelli ignition system.

    Now I can report that there is .290 inches (maximum) of rotor plastic between the coil contact and the distributer shaft. Since there seems to be a bolt through the roter to keep it secure on the shaft with rapid RPM increases, it seems reasonable that cracks would develop.

    Such cracks would ground the rotor before the spark gets to the lower contact thereby shutting down a whole bank.

    I'll report back in a few months if this cures my intermiitent and heat related problem with the passenger side bank shutting down.

    In the meantime, can any of you materials or electrical engineer guys comment?

    Greg
     
  13. blkprlz

    blkprlz Formula 3

    Mar 24, 2007
    2,169
    Tampa bay
    Full Name:
    Bruce
    Hey, I like to inject humor whenever I can :D

    :D LOL :D Good one Dave! Even for simple things like rebuilding H2O pumps :D
     
  14. blkprlz

    blkprlz Formula 3

    Mar 24, 2007
    2,169
    Tampa bay
    Full Name:
    Bruce
    I'm sure you can find metric machine screws in whatever head config. you need.
     
  15. blkprlz

    blkprlz Formula 3

    Mar 24, 2007
    2,169
    Tampa bay
    Full Name:
    Bruce
    Wow, good information! :)
     

Share This Page