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Timing with a pamco.

Discussion in 'The Garage' started by ninskrillz, Aug 12, 2015.

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  1. stanleyipkis

    stanleyipkis XS650 Enthusiast XS650.com Supporter

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    Your earlier problem lead me to believe that the wire for your PMA could be compromised, you may want to check there. Sounds like it is running only off the battery.
    Take a gander behind the rotor, this wire should be tucked behind the rotor mount.
    Your symptoms of only being able to get to 3000 RPM lead me to believe it is a connection or ground wire to your charging system.

    upload_2021-1-4_18-58-58.png
     
    Paul Sutton, Jim and gggGary like this.
  2. mike in idaho

    mike in idaho XS650 Enthusiast

    Last edited: Jan 5, 2021
  3. bosco659

    bosco659 XS650 Junkie XS650.com Supporter

    4490C2DE-4E92-4952-83D8-89EB719DD425.jpeg

    I will have a closer look a bit later this month, but do these timing markings make sense on my ‘76? It’s a photo from the po. I can look up close when I remove the side cover to replace the clutch rod.
     
  4. gggGary

    gggGary When a whole one is just too much. XS650.com Supporter Top Contributor

    Don't trust any timing marks, verify. MANY have installed PMA rotors using no key,, so the possibility always exists that the rotor has moved (spun a bit) on the crank taper.

    timing2.JPG timing rules.jpg
    Timingmark.jpg
     
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  5. bosco659

    bosco659 XS650 Junkie XS650.com Supporter

    Gary in my pic, does it appear the po removed the portion of the casing that had the timing marks on it?
     
    gggGary likes this.
  6. gggGary

    gggGary When a whole one is just too much. XS650.com Supporter Top Contributor

    Those marks were on the original stator not the cover.
     

    Attached Files:

    Paul Sutton likes this.
  7. bosco659

    bosco659 XS650 Junkie XS650.com Supporter

    Ok thx.
     
    gggGary likes this.
  8. 5twins

    5twins XS650 Guru Top Contributor

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    Bosco, the mark on your rotor labeled "TDC" shouldn't be marked at all. It's just an "indicator" or alignment mark that you line up with the labeled ones below it on your cover. To check them, put the motor at TDC and see if the rotor mark aligns with the TDC case mark. I'm not sure how the P.O. determined where to put the "F" mark, so it may or may not be correct. What I don't see is a full advance mark. That's an important one so you can make sure you're not running the timing too advanced. Hugh's Handbuilt has a nice little timing sticker that shows all 3 marks. I think he sells them for next to nothing, or he may even give them away. You might want to contact him .....

    [​IMG]

    It will most likely require you to make a new mark on your rotor, but that's no big deal. Just accurately find TDC and make the new mark.
     
    gggGary likes this.
  9. bosco659

    bosco659 XS650 Junkie XS650.com Supporter

    K thx 5twins. I’ll see if I can get that sticker. When shooting this with the timing light, which mark on the rotor? The one incorrectly marked as TDC on my engine? Looks like a small raised line below the scribed mark.
     
  10. 5twins

    5twins XS650 Guru Top Contributor

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    As it sits now, yes, you would use that scribed line marked "TDC" on your rotor as your "pointer". At idle, it should align with the "F" mark on your case. But, you don't know for sure if that "F" mark is correct, in the exact right spot. It's supposed to be made at 15° BTDC, the idle timing spec. It's easy enough to find and make the TDC mark accurately but for that "F" mark, you need a degree wheel. Or, assume Hugh did all that when he made his sticker and accept it's markings as correct.
     
  11. bosco659

    bosco659 XS650 Junkie XS650.com Supporter

    Ok I think I get it. Already sent a request to buy a stickers from Hugh’s. If that fails I’ll use a degree wheel to validate the timing marks. Always something to do with the bike. Thx for your input.
     
    gggGary likes this.
  12. gggGary and Jim, here are pics of the cam and it appears I have the advance rod as well as bronze bushing in there.

    I also double checked the cable as per stanleyipkis and it looks ok to me ... I did notice however the way the cable is routed is pretty darn close to the chain ... normal?
    ls cam.jpg rs cam.jpg cable.jpg rs cam.jpg ls cam.jpg close chain up.jpg close chain low.jpg cable.jpg
     
    gggGary likes this.
  13. gggGary

    gggGary When a whole one is just too much. XS650.com Supporter Top Contributor

    OK that looks like a genuine Pamco e advance all in one
    pamco e advance all in one.jpg
    so you do not have a mechanical advance under the RH cover.
    mechanical advance.jpg
    You would need to add one to get a Tyronics set up to to work or you could consider one of the other ignitions that have electronic advance like the Boyer mentioned above.
    Your Pamco board looks like it got hot on the RH side. Not sure what might have caused that or if it's related to it dying.
    I think it will be a good idea to do a basic system check up on your charging, make sure everything is functioning as it should.
     
  14. gggGary

    gggGary When a whole one is just too much. XS650.com Supporter Top Contributor

    Your charging wire bundle routing looks about right.
     
    Jim likes this.
  15. I spoke with Gina from Boyer, and she suggested the KIT00303 which comes with the mini dual output coil

    I am still going to try to ride the bike a bit more once riding season is back here in a few more monthes, but keep this idea on the back burner

    thank you all again for your help!
     
    gggGary likes this.

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