-
Enjoy XS650.com? Consider making a donation to help support the site.
XS650.com receives a small share of sales from some links on this page, but direct donations have a much greater impact on keeping this site going.
CDNTX650
XS650 Guru
If your rotor is on f, yes.
Posted via Mobile
Posted via Mobile
CDNTX650
XS650 Guru
Sorry, T mark.
Posted via Mobile
Posted via Mobile
mjamusic
XS650 Addict
Does it absolutely have to be aligned or can I adjust for it with my PMA/Pamco? Thanks
deadchef
xsbobblehead
that is certainly off and no you cannot adjust it with your pamco.
here is what your bike will sound like if you ran as-is.
here is what your bike will sound like if you ran as-is.
CDNTX650
XS650 Guru
As said, nope. Run like crap. 2 teeth off prob means bent valves.
Posted via Mobile
Posted via Mobile
mjamusic
XS650 Addict
Thanks gentlemen! Best way to fix without breaking the chain?
deadchef
xsbobblehead
just take off the cam bearings and remove the cam chain tensioner. you then have enough play to make the adjustment.
mjamusic
XS650 Addict
Got the bearings off and got er lined up! Thanks a ton
xs650dreamer
XS650 Junkie
if it was advanced instead of retarded by that many degrees, say what like 5? it wouldn't neccerally be bad would it ?
Over a ??0,000 mile life usage, the camchain can wear/stretch enough to retard as much as 20°...
xs650dreamer
XS650 Junkie
two many what i was asking was his cam timing is retarded there right ?
my question was, cant you get better performance by advancing cam timng ?
my question was, cant you get better performance by advancing cam timng ?
Yeah, in the original pic, the cam is retarded. Pre-advancing the cam a few degrees is a debatable practice. Usually gives good low-rpm performance, then over time the cam timing is in spec, hi-rpm performance starts improving. A fair long-term street commuter strategy, not good for racing...
xs650dreamer
XS650 Junkie
ok just wondering, my friend was telling me to advance my cam timing instead my ignition timing it would somehow give me higher compression ? i didnt believe him.
does the same go for ignition timing, if advanced can give you better low-rpm performance ?
does the same go for ignition timing, if advanced can give you better low-rpm performance ?
No, not really. Ideally, ignition timing will give best performance when adjusted to match a plethora of conditions, like fuel type, altitude, temperature, rpm, manifold vacuum, ...etc. In days long gone, some bikes had a twist-grip spark advance, and you would simultaneously retard the ignition while applying throttle to get best acceleration, then reduce throttle and advance timing to get cooler running and best mileage. Good carbs, like Holley, had a 'timed port' located near the low throttle position of the butterfly plate, and its vacuum signal would control the vacuum advance of the distributor. Poorly- informed fellows would connect the distributor's vacuum line to the intake manifold, get the wrong vacuum signal, and get strange performance problems. Modern systems use a batch of sensors and a factory designed lookup table to determine spark advance. This info could fill a book, in fact, it does...
xs650dreamer
XS650 Junkie
thanks two many, when i install my 256 cam ill just install it normally that should give me enough performane. looks like i have to sale my megacycle adjustable sprocket now
doctavee
XS650 enthiusiest
buy a clymers book, best investment you'll ever make
