cam timing

  1. billy icon

    the xs1 valve springs, vs the xs650 valve springs cam specs also (maybe)

    hello, I am new to this site, altho I have built a few xs motors, mostly stock.. this build Im doing now has come to me via Europe, its gonna get wild here so be ready for the debating lol, its going to have a xs1 cyleder bored out to 80mm (750cc) the clynder came to me this way and it came...
  2. S

    PMA Rotor Timing Marks

    Hi all, I've presently got an RD350 PMA fitted to my bike but never got around to making timing marks on the flywheel. Can someone confirm that the only mark on the flywheel is for TDC? I'll also need to add timing marks to the engine cover. Please could someone confirm how many degrees...
  3. J

    valve ticking noise at reassembly, and after valve adjustment not running

    Hi Guys So I rebuild my bike recently, (first time) I got hoos racing cam shell 1, and 700cc JE pistons, got it all done, put together I adjusted the values, but tunning it was making a load ticking sound from the valves, but it ran decently well. Then I realized that when I...
  4. Signal

    Cam Lobe Centre Adjustment

    I have been trying to think this through and end up chasing my own tail. To bias the peak torque lower in the rev range the lobe centre is advanced from the manufactures advertised specification. If a cams inlet lobe centre is advertised as 100.5 deg. ATDC then to advance it 1 deg. what is...
  5. Metal

    looks like cam timing is out?? with photos.

    Hi guys, So I just put in a new stock 256 can and I'm also running a PMA. I got my self a piston TDC stop, a degree wheel and a dial indicator. Went about finding TDC and remarking it on my PMA. Set the valves to .012 and the went to see when the inlet valve would open. 47 degrees is what...
  6. S

    cam timing 180 out of sync.

    O.K. I just replaced both pistons, had cylinders bored, new rings, reground valves, new cam chain. I think I may have put the cam chain on so the cam is 180 out of proper timing. Does this matter with a basically stock xs 650 engine? It seems like it wouldn't matter with both cylinders firing at...
Back
Top