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Some build picks

Discussion in 'Norton Motorcycle Rebuilds' started by acadian, Mar 3, 2019.

  1. acadian

    acadian VIP MEMBER

    Joined:
    Mar 5, 2010
    Here are some picks of my 750 build, just swapped it into the frame a few days ago

    Dyno Dave identified these early cases as having a few carry over characteristics, there were in really good shape regardless (no play in intermediate spindle, , but I modified them for the comstock rear case breather, reinforced them, installed new cam bushes, had to openn up the cam tunnel to fit the Web312 cam, installed new superblends etc..

    [​IMG]

    New H beam rods from Don, crank was dynamically balanced to suit
    [​IMG]
    reaming out the crank for 3/8 studs
    [​IMG]
    the 3/8 nuts don't clear the flange on the 750 crank so I had to shoulder them to fit
    [​IMG]
    head work by Mr Comstock
    [​IMG]
    new rods installed, as with other's experiences, the 3/8 rod bolts contacted the cases so I had to chamfer them for clearance
    [​IMG]
    I reinforced a cradle and swingarm set I picked up for a decent price
    [​IMG]
    cam degreeing was helped by the new cam sprocket RGM is selling, it has 3 keyways on it, allowed me to get the few degrees of advance that was suggested by JC and others
    [​IMG]
    more cam degreeing
    [​IMG]
    pistons ready to install, skirts and crown coated with the thermal/slippery stuff (yes, I know the risk)
    [​IMG]
     
    nortriubuell likes this.
  2. acadian

    acadian VIP MEMBER

    Joined:
    Mar 5, 2010
    NOS barrel was sourced, it was on original bore but I went to +20 to clean things up anyway, used the TotalSeal quick set powder on this job, we'll see how it goes
    [​IMG]
    head going on with the new kibblewhite pushrods I bought
    [​IMG]
    all buttoned up, AMR sump mods were applied to this cover
    [​IMG]
     
    Jerry Doe, Northton and Time Warp like this.
  3. lcrken

    lcrken VIP MEMBER

    Joined:
    Mar 15, 2009
    Looking good.

    Ken
     
  4. gortnipper

    gortnipper VIP MEMBER

    Joined:
    Nov 11, 2013
    Nice.

    Did you dynamically balance the crank?

    I cant help but noticing the porosity of the head casting, especially compared to the FA heads. :eek: But the lightened rockers should be good. Did you have the spindles drilled as well?
     
  5. acadian

    acadian VIP MEMBER

    Joined:
    Mar 5, 2010
    Yes, crank was dynamically balanced to 54%, they sure carved a lot of meat off it! I only lightly worked the rockers, basically just took off casting marks and high spots, then polished. Didn't touch the spindles.
     
    gortnipper likes this.
  6. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    Very nice !
     
  7. cjandme

    cjandme

    Joined:
    Feb 5, 2011
    Outstanding!! Thanks for posting.
     
  8. acadian

    acadian VIP MEMBER

    Joined:
    Mar 5, 2010
    Engine installed, final assembly of bits took quite a bit longer than anticipated with some hiccups (busted primary side gearbox adjuster while aligning shafts)


    IMG_2820.JPG IMG_2821.JPG

    IMG_2822.JPG
     
    Last edited: Mar 29, 2019
  9. grandpaul

    grandpaul VIP MEMBER

    Joined:
    Jan 15, 2008
    Is it just me or do the last three photos not display?
     
  10. alan hodge

    alan hodge VIP MEMBER

    Joined:
    Oct 10, 2017
    i dont see them either
     
  11. acadian

    acadian VIP MEMBER

    Joined:
    Mar 5, 2010
    weird, they were there
     
  12. lcrken

    lcrken VIP MEMBER

    Joined:
    Mar 15, 2009
    And they are back! And very nice looking at that.

    Ken
     
  13. grandpaul

    grandpaul VIP MEMBER

    Joined:
    Jan 15, 2008
    Still can't see them. Oh well...
     
  14. olympus

    olympus

    Joined:
    Aug 5, 2017
    Can i ask where the oil gauge /piping and fittings came from??
     
  15. acadian

    acadian VIP MEMBER

    Joined:
    Mar 5, 2010
    I sourced the gauge from fleabay, liquid filled, $20... the braided hose and fittings I already had lying around. fabbed up the bracket from some 1/8" alloy sheet
     
  16. Nortoniggy

    Nortoniggy

    Joined:
    Nov 17, 2010
    Very nice but can I point a minor mistake out? The dipswitch lever on the left bar is backwards. The extended part should point towards the grip.
     
  17. grandpaul

    grandpaul VIP MEMBER

    Joined:
    Jan 15, 2008
    Keeps the tip from getting broken off that way.
     
  18. grandpaul

    grandpaul VIP MEMBER

    Joined:
    Jan 15, 2008
    Some nice looking goodies going in there.

    Where exactly are the cases reinforced?
     
  19. acadian

    acadian VIP MEMBER

    Joined:
    Mar 5, 2010
    DS main bearing flange and rear mounting lugs
     
  20. grandpaul

    grandpaul VIP MEMBER

    Joined:
    Jan 15, 2008
    Ah, so...
     

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