Back to Zeniths

Discussion in 'E9 Projects and Restorations' started by NewSixCoupe, Jan 3, 2019.

  1. NewSixCoupe

    NewSixCoupe Active Member Site Donor

    Messages:
    961
    Likes Received:
    25
    Trophy Points:
    28
    Location:
    Northeast
    Not sure why, but can't upload a 112kb file!
     
  2. Stevehose

    Stevehose Well-Known Member Site Donor $

    View My Showcase
    Messages:
    8,794
    Likes Received:
    1,185
    Trophy Points:
    113
    Location:
    New Orleans, LA
  3. deQuincey

    deQuincey Well-Known Member

    View My Showcase
    Messages:
    5,822
    Likes Received:
    525
    Trophy Points:
    113
    Location:
    bilbao
  4. Ohmess

    Ohmess I wanna DRIVE! Site Donor

    Messages:
    2,473
    Likes Received:
    437
    Trophy Points:
    83
    Location:
    Vienna, VA
    If you have not already done so, change to the smaller and much more efficient fixed magnet starter. Search SR441x. No better time than when the intake manifolds are off.

    And just for good measure, I would replace the main power cable from the battery to the starter too. Sooo much better starting.
     
  5. NewSixCoupe

    NewSixCoupe Active Member Site Donor

    Messages:
    961
    Likes Received:
    25
    Trophy Points:
    28
    Location:
    Northeast
    Great! Thanks. I see that's a Bosch starter... Is the main cable a BMW part?
     
  6. NewSixCoupe

    NewSixCoupe Active Member Site Donor

    Messages:
    961
    Likes Received:
    25
    Trophy Points:
    28
    Location:
    Northeast
    Although, shows up on Amazon as remanufactured, and doesn't match a '74 CS...
     
  7. NewSixCoupe

    NewSixCoupe Active Member Site Donor

    Messages:
    961
    Likes Received:
    25
    Trophy Points:
    28
    Location:
    Northeast
    Looks like they're all remanufactured...for about $170...
     
  8. HB Chris

    HB Chris Well-Known Member Site Donor $$

    View My Showcase
    Messages:
    10,834
    Likes Received:
    1,307
    Trophy Points:
    113
    Location:
    Huntington Beach, CA
    SR71x, SR440x, SR441x, they all work, be sure they have the small case and permanent magnet. And don’t hook up the always live wire from starter to ballast resistor was on the 440/441.
     
  9. NewSixCoupe

    NewSixCoupe Active Member Site Donor

    Messages:
    961
    Likes Received:
    25
    Trophy Points:
    28
    Location:
    Northeast
    Thanks Chris!
     
  10. NewSixCoupe

    NewSixCoupe Active Member Site Donor

    Messages:
    961
    Likes Received:
    25
    Trophy Points:
    28
    Location:
    Northeast
    Here are those images... IMG_3210.JPG IMG_3209.JPG
     
  11. Ohmess

    Ohmess I wanna DRIVE! Site Donor

    Messages:
    2,473
    Likes Received:
    437
    Trophy Points:
    83
    Location:
    Vienna, VA
    Right -- so Chris has the starter covered. As to the wire, I used the original BMW part. They were available last fall and relatively inexpensive.
     
  12. Ohmess

    Ohmess I wanna DRIVE! Site Donor

    Messages:
    2,473
    Likes Received:
    437
    Trophy Points:
    83
    Location:
    Vienna, VA
    I don't have Zeniths, but all four of the items on the right side of your picture are part of the bellcrank assembly. One nylon sleeve goes on the post sticking out from the engine with the flange toward the engine, the spring goes over that (with one end in the hole in the plate and the other on the side of the bellcrank, and other sleeve slides into the spring with the flange at the top. The bellcrank goes no next, and that black square clip fits into a groove on the post, holding the bellcrank in place.
     
  13. HB Chris

    HB Chris Well-Known Member Site Donor $$

    View My Showcase
    Messages:
    10,834
    Likes Received:
    1,307
    Trophy Points:
    113
    Location:
    Huntington Beach, CA
    The battery cable to starter has small terminals on the battery end to power the condenser fan, relays and others. Think I used e21 or e24, it was a tiny bit longer but it.
     
  14. NewSixCoupe

    NewSixCoupe Active Member Site Donor

    Messages:
    961
    Likes Received:
    25
    Trophy Points:
    28
    Location:
    Northeast
    Thanks! BMW part #s for the plastic bushings and spring? And the battery cable too? The linkage rods will have to be disassembled and refinished.
     
  15. Stevehose

    Stevehose Well-Known Member Site Donor $

    View My Showcase
    Messages:
    8,794
    Likes Received:
    1,185
    Trophy Points:
    113
    Location:
    New Orleans, LA
    13 Bushing D=10MM 2 12/1968 11/1975 35411100674 $0.80 (need 2)

    14 Spring 1 04/1971 11/1975 35411106271 $8.04 ENDED

    I think the spring is NLA
     
  16. NewSixCoupe

    NewSixCoupe Active Member Site Donor

    Messages:
    961
    Likes Received:
    25
    Trophy Points:
    28
    Location:
    Northeast
    Thanks Steve, and everyone! I think Carl told me the spring was available, or maybe he had one... Here's a progress image from this AM with manifolds removed. So my to do list includes:

    1. Order coolant hoses and clamps
    2. Decide whether to replace starter and/or battery cable
    3. Replace sensor at rear of block coming from starter?
    4. Replace sensor under front manifold?
    5. Read up on cabin coolant bypass and determine whether it was done correctly by my first vintage BMW mechanic (now retired) when I first bought the car back in 2005, and decide whether to do this again?
    6. Deal with slight seepage coming from base of dip stick tube
    7. Vapor blast manifolds and refinish yellow cad linkage components
    8. Check/replace vacuum and fuel lines

    Going to be a busy Spring/Summer...

    Also, there's always the slippery slope of "when do I stop" before this starts to reimagine itself as a "restoration"! IMG_3213.JPG
     
  17. Ohmess

    Ohmess I wanna DRIVE! Site Donor

    Messages:
    2,473
    Likes Received:
    437
    Trophy Points:
    83
    Location:
    Vienna, VA
    Dude -- replace the starter. It is a nightmare with the manifolds in place, and simple without.
     
  18. NewSixCoupe

    NewSixCoupe Active Member Site Donor

    Messages:
    961
    Likes Received:
    25
    Trophy Points:
    28
    Location:
    Northeast
    I know, not much to think about, other than which one to use.

    Here's the yellow cad inventory: IMG_3222.JPG
     
  19. Stevehose

    Stevehose Well-Known Member Site Donor $

    View My Showcase
    Messages:
    8,794
    Likes Received:
    1,185
    Trophy Points:
    113
    Location:
    New Orleans, LA
    This! And if you don't, Murphy's Law states your old starter will fail right after everything is back together.

     
  20. Markos

    Markos Well-Known Rust Staff Member Site Donor $$

    View My Showcase
    Messages:
    8,052
    Likes Received:
    2,129
    Trophy Points:
    113
    Location:
    Seattle, WA
    I bought the spring from Carl a few years ago.

     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice