krogar104
XS650 Member
1979 xs650
mikesxs pma and reg/rec
19$ junkyard electronic ignition (was actually like 70$)
http://xs650temp.proboards.com/thread/7899
this is a long tale I'll try to be quick sorry, 4 years ago i purchased this awesome bike, the bike ran well for a bit. solid state gave out replaced with pma. Again ran great left cylinder blew out, replaced all rings and honed both cylinders, best I can get on compression is weak but looks right, after kicking three times both cylinders reach 94psi, messed up bad and used cheap Chinese gasket set. After having everything back together, points were completely off had it running but not well at all. the right point contact was at tdc, while left was 90 degrees after tdc the closest i could get it. I pulled the top end apart again double checked cam was placed right. Went with the 19$ junkyard 180 ignition, still seems like left cylinder is off, I have rotated the engine by hand visual watching the valves countless times. and I'm using the basic chopper wiring diagram for head light, tail light trying both cap which it ran fine on and micro battery.
the bike doesn't want to run at all if the head light is switched off,
and has even more power if i step on the brake switch, confusing me on electrical pull, considering it doesn't seem to have enough power to feed the dual coil for both cylinders, i have tried the gm coil and a couple of scrapyard ninjas i can start the bike but it plays eerie games with me, after i kick start and get it to fire i can stand there it will run, but as soon as i lean over or walk around to test anything it dies, if i give it any throttle it chokes out, i have pulled the carbs and cleaned them multiple times, all passages are clear jets are clean floats are set, diaphragms look good watching them just above idle they both have the same chatter, there seems to be no heat off the left cylinder,
if I lined up the wrong mark on the cam wouldn't i have bent my valves at least?
mikesxs pma and reg/rec
19$ junkyard electronic ignition (was actually like 70$)
http://xs650temp.proboards.com/thread/7899
this is a long tale I'll try to be quick sorry, 4 years ago i purchased this awesome bike, the bike ran well for a bit. solid state gave out replaced with pma. Again ran great left cylinder blew out, replaced all rings and honed both cylinders, best I can get on compression is weak but looks right, after kicking three times both cylinders reach 94psi, messed up bad and used cheap Chinese gasket set. After having everything back together, points were completely off had it running but not well at all. the right point contact was at tdc, while left was 90 degrees after tdc the closest i could get it. I pulled the top end apart again double checked cam was placed right. Went with the 19$ junkyard 180 ignition, still seems like left cylinder is off, I have rotated the engine by hand visual watching the valves countless times. and I'm using the basic chopper wiring diagram for head light, tail light trying both cap which it ran fine on and micro battery.
the bike doesn't want to run at all if the head light is switched off,
and has even more power if i step on the brake switch, confusing me on electrical pull, considering it doesn't seem to have enough power to feed the dual coil for both cylinders, i have tried the gm coil and a couple of scrapyard ninjas i can start the bike but it plays eerie games with me, after i kick start and get it to fire i can stand there it will run, but as soon as i lean over or walk around to test anything it dies, if i give it any throttle it chokes out, i have pulled the carbs and cleaned them multiple times, all passages are clear jets are clean floats are set, diaphragms look good watching them just above idle they both have the same chatter, there seems to be no heat off the left cylinder,
if I lined up the wrong mark on the cam wouldn't i have bent my valves at least?