1. After 20+ years it's time to pass the torch. If you are interested in acquiring this forum please contact support@cv-performance.com for details. Any spam will be reported and blocked.
  2. Welcome to Bike Talk, a forum for all bikers and motorcycle enthusiasts. If you are new to Bike Talk, be sure to register for free and join the conversation.

    There's always someone around willing to help out with questions or give a friendly wave back. All Harley and metric riders are welcome.
Bike Talk Motorcycle Forum is For Sale Welcome to Bike Talk

Fork seal spec

Discussion in 'Motorcycle Tech Talk' started by NeilP, Mar 3, 2010.

  1. NeilP

    NeilP Active Member

    Joined:
    Nov 17, 2009
    Messages:
    345
    Likes Received:
    4
    Location:
    Jersey, Channel Islands
    2004 883 Sportster

    Got some new fork seals, but was wondering what the size spec of them is.
    Are they a metric size of imperial?

    I have put digital callipers across the fork legs, but cant figure a nice number in either metric or imperial.

    I have got the new HD seals NOK BR2722E 39-60.

    Cant seem to find any refs on Google for these seals.

    Reason I am asking, I have used some seals in the past:
    Motohaus Powersports Limited Leak Proof Fork Seals

    and found them very good.
    The site only shows metric seals but they do say they have other sizes...but no hint to wether they supply imperial or not...I have sent them an e-mail so will have to wait and see.


    Neil

    Edit:
    Have just found various other sites selling the same brand of seals for old British bikes, so I think I can assume that they do make imperial seals
    NeilP, Mar 3, 2010
    #1
  3. chucktx

    chucktx Moderator Staff Member

    Joined:
    Jul 5, 2005
    Messages:
    12,545
    Likes Received:
    10
    i believe the fork seal are metric as the front ends are mfg. by showa........
    chucktx, Mar 3, 2010
    #2
  4. sarge7

    sarge7 New Member

    Joined:
    Jan 12, 2009
    Messages:
    1,738
    Likes Received:
    0
    Location:
    NE Indiana
    38 mm on the sporty and 44 mm on the big V-twins is what I got from the book.
    So the inter specs should be 38mm for the sporty. Let us know what you come up with.
    sarge7, Mar 3, 2010
    #3
  5. NeilP

    NeilP Active Member

    Joined:
    Nov 17, 2009
    Messages:
    345
    Likes Received:
    4
    Location:
    Jersey, Channel Islands
    Metric...oh..really surprised...did not thing an all American product would have any metric on it...but thinking about it...all those bloody Torx fitting are going to be metric too.


    Well then , the numbers make sense the seal is marked 39-60 so seal dimensions 39mm ID 60 MM OD.

    If I had just engaged brain and thought metric then it would have told me itself


    Thanks
    Last edited: Mar 4, 2010
    NeilP, Mar 4, 2010
    #4
  6. wvak47

    wvak47 Active Member

    Joined:
    Aug 29, 2007
    Messages:
    745
    Likes Received:
    2
    Location:
    Chas WV
    You're all over it Neil, Sporty 04-06 (and probably above) have 39mm tubes.
    wvak47, Mar 4, 2010
    #5
  7. NeilP

    NeilP Active Member

    Joined:
    Nov 17, 2009
    Messages:
    345
    Likes Received:
    4
    Location:
    Jersey, Channel Islands
    I should slap myself for not thinking about it first!
    NeilP, Mar 4, 2010
    #6
  8. chucktx

    chucktx Moderator Staff Member

    Joined:
    Jul 5, 2005
    Messages:
    12,545
    Likes Received:
    10
    no worries!!!!!!!!! we all get brain farts!!!!!!!!!!! lol lol
    chucktx, Mar 4, 2010
    #7
  9. hotroadking

    hotroadking Super Moderator Staff Member

    Joined:
    Jun 16, 2004
    Messages:
    13,682
    Likes Received:
    584
    Location:
    Mouseville USA
    yep there are some metric parts on HD's have been for years

    Showa forks are some of the best and that's what you find on all HD's

    FYI the battery bolts are 10MM and the brake caliper bolts are Metric as well as they should be, they are on Showa forks.
    hotroadking, Mar 4, 2010
    #8
  10. NeilP

    NeilP Active Member

    Joined:
    Nov 17, 2009
    Messages:
    345
    Likes Received:
    4
    Location:
    Jersey, Channel Islands
    Carb as well, that seems to be metric.

    Put the vernier across the legs just now, 38.85mm so yep 39 seems to be it. Tried many points around the leg and it seems constant at that figure. So maybe my verniers are out or the leg IS a fraction under
    NeilP, Mar 4, 2010
    #9

Share This Page

XenPorta © Jason Axelrod from 8WAYRUN.COM