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Camshaft Noise

Discussion in 'Norton Commando Motorcycles (Classic)' started by swooshdave, Jun 9, 2019.

  1. swooshdave

    swooshdave

    Joined:
    Apr 15, 2009
    2S = cam stamped SS?

    What was the SS cam stamped with?
     
  2. L.A.B.

    L.A.B. Moderator VIP MEMBER

    Joined:
    Nov 20, 2004

    https://www.norvilmotorcycle.co.uk/engrange.htm

    "The camshaft on a combat is stamped with SS, this is called a 2S camshaft and not actually an SS camshaft (the SS camshaft is actually stamped X1 or X2 - this is a point of much confusion)."
     
  3. dynodave

    dynodave

    Joined:
    May 28, 2003
    Only IPL application for 06-2608 is the MKIII, where the case/ DS bush/journal is oil fed from beyond the end of the cam.
    Recently learned a 06-1084 is NOT suitable for a MKIII unless scrolling is modified to allow oiling of the DS journal.
     
  4. dynodave

    dynodave

    Joined:
    May 28, 2003
    YES single chain core


    Only hardness markings X, X2 or other...otherwise nothing
    starting around 60/61 it was the only NHT twin chain cam until the end of 20M3

    Of all the NHT factory cams( about 40?) I own, the daytona cam is the only one where I do not own a sample.
     
  5. L.A.B.

    L.A.B. Moderator VIP MEMBER

    Joined:
    Nov 20, 2004
    That's not how I understand it from what Madnorton said, previously.

    https://www.accessnorton.com/NortonCommando/camshaft-id.26551/#post-397866

    "..... the DS camshaft scroll for the 850 has the scroll break the end on 850 cams, when the 06.1084 was re-introduced the drawing was changed for the scroll to be correct for 850, this was changed in July '74 (amd 10) back to the original scroll end, so one cam fits all. The drawing has no change to the breather portion at all during all 17 amendments.

    Many owners note that the when they fit a current cam in the 850 DS case and look in the oil hole, it the drilling enters the chamber at the end of the cam not onto the cam itself, as per the early cams, some leave as is, some nick the metal away at the old timed drive chamfered slots at the cam to aid the oil to enter the scroll."
     

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