GO FISHING, use SLABSAUCE Fishing Attractant
Page 1 of 3 123 LastLast
Results 1 to 10 of 27

Thread: Banjo bolt lying in the valve train

  1. #1
    Join Date
    Jan 2007
    Location
    Dayton Ohio
    Posts
    1,483

    Default Banjo bolt lying in the valve train

    Decided to adjust the valves in the sons 735i, M30 engine. Took the valve cover off and discovered one of the banjo bolts had worked itself out. Found it lying on the top of the head. Only found one of the aluminum washers. I am guessing the other one had fallen down one of the oil ports. Hopefully this will not cause any damage. The engine was making some valve clattering, I guess this may have been caused by the missing banjo bolt and improper oiling of the rocker arms and cam. Will need to order new banjo bolts and washers. Need to get the bolts that can be wire tied in place. Only two of the valves needed adjustment and both of these were just a little tight.

    Decided to polish the valve covers with the Caswell aluminum kit


    Before



    After: Started with 220 grit then 600 wet sanding along the way. Must keep your water clean.


    Last edited by Kibokojoe; 02-14-2009 at 06:40 PM.

  2. #2
    Join Date
    May 2004
    Location
    Japan
    Posts
    9,249

    Default

    How can I send you my head covers for the super polish

    Think about a colating with something, otherwise they get darker again.
    Maybe you try Alodine
    http://www.aircraftspruce.com/catalo...lodine1201.php
    http://www.eaa1000.av.org/technicl/c...on/alodine.htm
    http://www.auf.asn.au/scratchbuilder/alodine1201.pdf
    If you do not use up the bottles, send them to me
    I will share the cost, cannot get the stuff here.
    http://www.eng-tips.com/viewthread.c...=168093&page=3

    and now to the banjo bolts:
    Gale's solution http://www.nmia.com/~dgnrg/banjo.htm

    here is a new business for you
    Make these, someone from the German E31 8 series forum is making them for the German community. Looks nice.
    http://www.7-forum.com/forum/5/nocke...ng-108140.html
    Attached Images Attached Images     
    Last edited by shogun; 02-14-2009 at 08:45 PM.

  3. #3
    Join Date
    Jan 2007
    Location
    Dayton Ohio
    Posts
    1,483

    Default

    If I make these locking washers can I reuse the banjo bolts? The washers look like copper? or are they aluminum?
    Last edited by Kibokojoe; 02-14-2009 at 09:36 PM.

  4. #4
    Join Date
    Jan 2007
    Location
    Dayton Ohio
    Posts
    1,483

    Default

    What temperatures can Alodine handle?

  5. #5
    Join Date
    May 2004
    Location
    Japan
    Posts
    9,249

    Default

    http://www.henkelna.com/us/content_d...iccoatings.pdf
    http://www.henkelaero.com/Images/Dat...odine1200s.pdf
    I guess the washers are made of copper, like the copper washers on banjo bolts on the powr steering pump.

    Alodine is used by some people already, here some more info
    http://www.aircraftspruce.com/catalo...umprepaint.php
    you need aluprep also
    http://www.wicksaircraft.com/catalog...h=YWxvZGluZQ==
    Alodine (Conversion Coating)


    Chromate Conversion (aka Alodine® or Iridite®) is a chemical treatment process for aluminum used to provide corrosion protection and surface preparation for paint and adhesives.
    Chromate is an excellent treatment method for paint or adhesives since it greatly enhances the product's ability to form a bond with the aluminum. It is frequently used on electrical and electronic equipment because it provides increased corrosion resistance while remaining electrically conductive.
    The oxide films produced by this process vary in color, depending on the aluminum alloy being treated, surface conditions, and the type of chromate.

    Key Benefits

    1. Alodine resists corrosion.
    Our test results on 6061 aluminum indicated that the Alodine treated surface withstood corrosion in a five percent salt spray test for 168 hours. Results do vary depending on the alloy of the material and the surface finish. We recommend that you submit a sample of the alloy and a description of the finish you intend to use. It will be processed and returned to you for evaluation.

    2. Alodine is an excellent paint base.
    Since the coating is not applied electrically and can be applied quickly, Alodine is one of the most cost effective ways to provide a suitable primer base prior to applying Paint.

    3. Alodine is decorative.
    Alodine has a light gold to dark gold appearance depending on your individual preferences.

    http://www.poly-metal.com/alodine.shtml

  6. #6
    Join Date
    Dec 2003
    Location
    Eastern Tennessee USi
    Posts
    14,839

    Default

    locking washers will leak oil pressure.

    Quote Originally Posted by Kibokojoe View Post
    If I make these locking washers can I reuse the banjo bolts? The washers look like copper? or are they aluminum?
    95 E34 530I V2.37
    ===========
    Those who make peaceful revolution impossible will make violent revolution inevitable.

    John F. Kennedy

  7. #7
    Join Date
    Jan 2007
    Location
    Dayton Ohio
    Posts
    1,483

    Default

    Look at these locking washer. I am not talking about a split ring

    http://www.7-forum.com/forum/5/nocke...ng-108140.html

  8. #8
    Join Date
    May 2004
    Location
    Japan
    Posts
    9,249

    Default

    Quote Originally Posted by 632 Regal View Post
    locking washers will leak oil pressure.
    No , Sir, they are standard
    http://bmwfans.info/original/E32/Lim...1/ill-11_1188/
    see item 8
    07 Hollow bolt 2 3,00 € 11 42 1 738 621
    08 Gasket ring A8X11,5 4 0,11 € 11 42 1 252 343

  9. #9
    Join Date
    Apr 2006
    Location
    Chicago, Il. U.S.A.
    Posts
    4,243

    Default

    BMW sells a replacement bolt that doesn't fall out. The heads have different markings, someone will no doubt chime in with the specifics about identifying them.
    This should help http://www.bimmernut.com/forum/showt...ght=banjo+bolt
    Last edited by Ross; 02-15-2009 at 08:09 AM.
    "The gas pedal wouldn't go to the floor if it weren't meant to be there"

  10. #10
    Join Date
    Jan 2004
    Posts
    4,150

    Default

    Quote Originally Posted by Kibokojoe View Post
    Look at these locking washer. I am not talking about a split ring

    http://www.7-forum.com/forum/5/nocke...ng-108140.html

    Must be just me but it won't let me look at the images unless i register...
    At any rate the new style bolts with the factory encapsulated loctite type coating on them work fine as well as Don Gale's safety wire solution for a very good price... If your bolt has been backed out for awhile and it was the front 2 valves that were loose and tapping you better look at the cam lobes to see if they have gone flat or worn considerably. I've seen it on a number of m30's over the years.


Page 1 of 3 123 LastLast

Similar Threads

  1. Valve train.
    By TheEndIsNear in forum 5 Series BMW
    Replies: 4
    Last Post: 07-15-2006, 09:28 AM
  2. M70 engine-banjo bolt loose
    By shogun in forum 7 Series BMW
    Replies: 0
    Last Post: 08-22-2005, 12:11 AM
  3. Valve Cover/Banjo Bolt Spring Project Pics.....
    By George M in forum 5 Series BMW
    Replies: 18
    Last Post: 01-10-2005, 07:40 PM
  4. Replies: 15
    Last Post: 07-02-2004, 11:29 AM
  5. Banjo Bolt question....
    By George M in forum 5 Series BMW
    Replies: 4
    Last Post: 05-10-2004, 01:55 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •