1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Amal Premiers

Discussion in 'Norton Commando Motorcycles (Classic)' started by Dellis, Mar 13, 2019.

  1. L.A.B.

    L.A.B. Moderator VIP MEMBER

    Joined:
    Nov 20, 2004
  2. marshg246

    marshg246 VIP MEMBER

    Joined:
    Jul 12, 2015
    Definitely worth it.
     
  3. p400

    p400 VIP MEMBER

    Joined:
    Jul 14, 2014
    Putting the list of Amal Premier parts together to ensure desired replacement for 932 R33/L34.

    Slide - hard anodized 928/060/3.5HA
    Needle - Norton 928/104
    Needle jet - 622/122/106
    Spray tube - Norton 928/107
    Jet holder - 622/128
    Main jet - 376/100-220, 240, 260
    Float chamber - (.125" inlet orfice) 622/056
    Float needle - 622/197 AL aluminum
    Float (stay up) - 622/069 W
    Pilot jet - 622/502-19
    Fuel inlet banjo - (5/16") 376/139 150deg double

    Any corrections or additions?
    extended tickler?
    #3 Slide more suitable?

    The 5/16" banjos, tees, filters and petcock seem to be much more successful when dealing with 1/4" tubing and ethanol fuel.
    At least that has been my experience for the last 20 years.

    45678.jpg
     
    Last edited: Sep 3, 2019
  4. p400

    p400 VIP MEMBER

    Joined:
    Jul 14, 2014
    Ordered a Amal Premier Norton set today from John Healy.
    Ships today, might be in on Thursday, i am close.
     
  5. seattle##gs

    seattle##gs

    Joined:
    Oct 28, 2014
    I just installed a new set of 32 Premiers and ran into a few problems. Burlen has apparently NOT settled the pilot problem yet. I ordered a pair of #19 pilots for an additional $40. Then the ticklers refused to flood the carbs. The right side took about 30 seconds to fill and the left not at all. I tried a few things and discovered the problem was in the floats. Straight out of the box they were adjusted (or not adjusted) so that there was almost no movement of the float needle. This happened a couple of months ago with another set of premiers but not so bad. I swapped the float bowls from his old carbs onto the new ones and all is well.
    So the lesson is...accept the fact that Burlen does not provide the carbs with correct fuel levels and the floats MUST be checked every time.
     
  6. marshg246

    marshg246 VIP MEMBER

    Joined:
    Jul 12, 2015
    Did you buy directly from Amal or from a dealer? What "PACK" number? Does the label on the side of the box say they have #17 or #19? Amal settled around 18 months ago that carbs for 850s get #19. Carbs destined for 750s (30 or 32mm) still get #17. I've bought lots for both and have never had them be wrong but I buy directly from Amal. Amal provided me #19, no charge, to replace the #17 on carbs I bought before they made the change.
     
  7. p400

    p400 VIP MEMBER

    Joined:
    Jul 14, 2014
    How did you resolve the issue of float needle movement?
     
  8. seattle##gs

    seattle##gs

    Joined:
    Oct 28, 2014
    I still have the box they came in, will check later this aft.
    while the #17 works on the 750 I needed to turn the air mix screw in to 1 turn for easy starting. Have much further to go. I have discovered that the #19 is best on a BSA Victor and a 750 Triumph also, so I believe #19 would be best in most cases.
    To cure the float problem I simply took the entire float bowl from the old carb and put it on the new one. They had the usual white float and a brass needle. I had already spent much time on setting the float level so I had a matched pair ready to go.
    I use the method of drilling the drain plug, fitting a spigot with JB weld and running a small tube along side carb to see fuel level...it works very well.
     
  9. marshg246

    marshg246 VIP MEMBER

    Joined:
    Jul 12, 2015
    I can't say for anyone else, but if you order direct from Amal, you can tell them which jets you want and they will supply carbs with the jets you want. Same from me although it may take longer because I don't stock every combination.

    A BSA B50 also likes #19 but Triumph 500 and 650 with dual carbs and Trident like #17. Don't know about Triumph single carb 500 and 650.

    If lots of people stated what they know, I would be happy to bug Amal with the results.

    BTW, I would not call 1 turn bad. I generally end up at about 1-1/4 turn to get good response when you blip the throttle at idle. If it starts good, idles good, and doesn't hesitate just off idle, you're golden in my book.
     
  10. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    My 650 Triumph didn’t like #17s at all and is now on #19s.
     
  11. p400

    p400 VIP MEMBER

    Joined:
    Jul 14, 2014
    what level do you use on a Commando Amal when looking at a small tube along side carb.??

    These Commando Amals appear tilted to me, so where on the carb do you take this reading?

    With white plastic floats, you are knocking the brass seat in the float bowl to the proper position?
     
  12. marshg246

    marshg246 VIP MEMBER

    Joined:
    Jul 12, 2015
    Interesting. Anything special about it? What year? Dual or Single carb? What fuel? I ask because I've done a 70 and a 71 Bonneville and a 68 Daytona all with #17 and they worked great - all three were stock and all jets were as original except of course the pilot jets. All fuel here is 10% ethanol.
     
  13. seattle##gs

    seattle##gs

    Joined:
    Oct 28, 2014
    I measure the float level towards the engine side of the carburetor, usually right in front of the air screw. The tube would cover the air screw.
    I keep the fuel level in the tube even with the bottom of the float bowl flange.
    I really have had no problem with the brass needles or white floats. I tried the stay ups and the alu needle with inconclusive results. I will happily trade some alu needles for good brass ones. Anybody need some #17 pilots? I've got 6 sitting in a box with no plans. I could use some white floats.
     
    p400 likes this.
  14. seattle##gs

    seattle##gs

    Joined:
    Oct 28, 2014
     
  15. seattle##gs

    seattle##gs

    Joined:
    Oct 28, 2014
    these were shipped for a 750. PACK 112 n jet 106 pilot #17 throttle #3
     
  16. marshg246

    marshg246 VIP MEMBER

    Joined:
    Jul 12, 2015
    Ya, as far as Amal is concerned that's correct for a 73 750, including the #17 pilot jet. They are meant to replace 932/26 & 930/27.
     
  17. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    ‘68 T120, twin 30mm Premiers, stock engine, unknown silencer internals but they look stock. I always use high octane unleaded, which means 97 or 99 RON and max 5% ethanol over ‘ere.

    Trident Sam put me on to this issue, it’s common for the triple boys to swap out the #17s for #19s too.
     
    Last edited: Sep 5, 2019
  18. Onder

    Onder

    Joined:
    May 11, 2010
    74 850 Premiers with 19's . It starts first kick if its in a good mood. If anything it
    runs a bit lean, plugs as clean as Ive ever had a brit bike to run. I run four of them
    so I do have some comparisons.
     
  19. marshg246

    marshg246 VIP MEMBER

    Joined:
    Jul 12, 2015
    Again interesting. I wonder if the other 5% ethanol has something to do with it. I use high octane unleaded as well but the only choice is 10% ethanol. I have three triples, two never restored, all original except Tri-Spark and Premier carbs and they are fine on #17.

    Can you describe the symptoms you were having that caused you to change?

    BTW, I asked Amal a year ago why not use #19 instead of #17 and mentioned that originally most would have had a 20 pilot (before they went to the internal bush). Never got a reasonable answer. I'm keeping track of what people here say and will ask again when I can give some numbers.
     

Share This Page