Wanted: US spec 6 lobe distributer cam | FerrariChat

Wanted: US spec 6 lobe distributer cam

Discussion in '206/246' started by tx246, Jun 2, 2008.

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

  1. tx246

    tx246 F1 Veteran
    Owner Rossa Subscribed

    Nov 4, 2003
    6,670
    Texas
    Full Name:
    Shawn
    does anyone have one of these or know where i can dig one up at?
     
  2. dm_n_stuff

    dm_n_stuff Four Time F1 World Champ
    Lifetime Rossa Owner

    Dec 10, 2003
    43,757
    26.806311,-81.755805
    Full Name:
    Dave M.
    Shawn, why would you want to use that?

    The euro distributor is better, and easier to deal with, and from the outside, is identical in appearance to the US spec.

    What sort of project are you working on?

    Oh, and dollars to donuts, Dennis McCann has one. I had one, sold it to another Fchatter about a year ago. About $1000 as I recall, may have been a little less.

    Dave
     
  3. tx246

    tx246 F1 Veteran
    Owner Rossa Subscribed

    Nov 4, 2003
    6,670
    Texas
    Full Name:
    Shawn
    the euro and us distributers are slightly different. we are rebuilding the distributer and the lobe has a little more wear at the bushings than i would like considering it is being rebuilt. the distributor hasn't given out, if it wasn't off the car already, i would have left it alone. i have found several distributors that are complete units, but everything else on the distributor is good, other than the lobe.

    as for the 6 vs 3, if it wasn't for the fact that the distributor was good, i would definitely switch. seeing as it isn't, i am just looking to replace the one "gut" that needs it
     
  4. John Corbani

    John Corbani Formula 3
    Honorary Owner

    May 5, 2005
    1,153
    Santa Barbara, CA
    Full Name:
    John Corbani
    #4 John Corbani, Jun 2, 2008
    Last edited: Jun 2, 2008
    I rebuilt my distributor after both the innner shaft and the cam bushings had been destroyed by no lube. Prior owner had never touched distributor at 51,000 miles. If the inner shaft is OK then life is easier. Any decent machine shop with a toolmaker's lathe can pull the old Oilite bushings and replace them. Between English and Metric stock you can do any size on either ID or OD. Center is easy to find. Make sure the shop has sized bushings before. ID must not be crushed or smeared. Bore the ID to a slip fit.
    If shaft is worn, it can be ground. Take off as little as possible. Centers are good. Don't try to turn the surface no matter how new or fine the cutter. Use a toolmaker's lathe. Make the bushings to fit.
    Chances are the cam lobes are fine. Don't touch them. Lube bearings and cam wiper with instrument oil, advance mechanism and cup with teflon loaded grease. Re lube every 10,000 miles. My bearings have lasted 140,000 miles and still fine. Have mentioned distributor things in a number of Sagas. Look in the index.
    John
     
  5. a4redude123

    a4redude123 Karting

    May 1, 2005
    77
    Los Angeles
    Full Name:
    Alex A.
    I have a complete brand new one. Paid $1600.00 for it about 5 years ago. Would be interested to trade for L Dino stuff.
     
  6. ferrari dino

    ferrari dino Karting

    Feb 16, 2006
    180
    Southern California
    Full Name:
    John Kennedy
    I can get a NOS for USA with original cap & rotor for $1,900.00.
     
  7. John Corbani

    John Corbani Formula 3
    Honorary Owner

    May 5, 2005
    1,153
    Santa Barbara, CA
    Full Name:
    John Corbani
    Should be able to get bearings replaced for less than $500. Just have to find a machine shop that has done and will do precision work.
    John
     
  8. tx246

    tx246 F1 Veteran
    Owner Rossa Subscribed

    Nov 4, 2003
    6,670
    Texas
    Full Name:
    Shawn
    with the distributor being off the car for a rebuild of the engine, we took it apart to see what it looked like (it had worked fine before the engine came out).

    i have found a new cam and will be replacing it. fortunately, we found the condition of the lobe before it created a distributor issue.
     
  9. jselevan

    jselevan Formula 3

    Nov 2, 2003
    1,873
    W.S. - have you considered switching over to a Crane optical pickup system... Does away with the need for lobes, reduces the load on the bearing, and ends the task of changing points and setting dwell.

    Just a thought. Easy to do. Much less expensive than what you are considering. And easily reversed in the future if originality is your thing.

    Jim S.
     
  10. tx246

    tx246 F1 Veteran
    Owner Rossa Subscribed

    Nov 4, 2003
    6,670
    Texas
    Full Name:
    Shawn
    utlimately, i might not even end up using the current system. we are rebuilding the car. it is far from perfect. i am sure we will end up with modern upgrades shortly. before we put the bits back together, i would rather use good parts than bad
     
  11. ferrari dino

    ferrari dino Karting

    Feb 16, 2006
    180
    Southern California
    Full Name:
    John Kennedy
    How does the lack of tension, from two sets of points dragging on the cam lobe, effect the centrifugal advance weights? I heard with optical pickups the advance happens sooner.
     
  12. John Corbani

    John Corbani Formula 3
    Honorary Owner

    May 5, 2005
    1,153
    Santa Barbara, CA
    Full Name:
    John Corbani
    Drag of moving points changes the advance curve slightly but advance curve and static setting are designed to compensate. You can go + or - a degree on the 6 deg static advance and see what happens. Any modification of the curve itself involves changing springs or shims inside the advance weights. You need a distributor machine and a lot of patience to set this. Advance curve itself stays the same whether points or electronic sensing is used. Curve is set inside the weights. Main shaft must be straight and true. Breaker cam lobes should be clean and the bushings inside the shaft must be line bored, a close push fit and always lubricated. You want the two shafts to turn freely but have only a 2-3 thou clearance.
    John
     
  13. TonyL

    TonyL F1 Rookie

    Sep 27, 2007
    4,202
    Norfolk - UK
    Full Name:
    Tony

Share This Page