Screaming Meemie
XS650 Enthusiast
Hey guys, jetting/elevation question here. Bought the bike in MN (elev.950ft) all stock, ran great (which I later couldn't believe due to the rotten air filters, oil filters, sparkies...etc). I hit 102 speedo-indicated mph with stock gearing. Didn't check the tach at that time, but I'm sure it was high. Brought it to MT (elev.5000), didn't re-jet, switched to UNI pods, cut out the rear exhaust baffles and it runs great, with one caveat... I went to 18/30 gearing and am only able to get to about 85-87mph in top gear. And, even in 4th, she doesn't like to rev above 6k rpms. Aaaand I plan on bringing the bike back to MN in 3 days.
My question(s) to the all-knowing collective that is XS650.com:
1. Jetting suggestions for going back down 4000 feet? I'll start with stock of course, but it'd be nice to have a vague idea for direction when I inevitably need to tune.
2. Is the hesitancy to rev up high due to my high gearing, high elevation or both? It really runs sweet from low idle right up through 5k.. but has a tough time gaining them after about 5700rpm. It gains & looses revs real nice and idles like a peach. 1 kick starter. Plugs look like god breathed on em.. great color.
Im hoping to re-join the century club if possible... But mostly just want to hit the redline for a sec if I see fit. haha.
Thanks as always!
My question(s) to the all-knowing collective that is XS650.com:
1. Jetting suggestions for going back down 4000 feet? I'll start with stock of course, but it'd be nice to have a vague idea for direction when I inevitably need to tune.
2. Is the hesitancy to rev up high due to my high gearing, high elevation or both? It really runs sweet from low idle right up through 5k.. but has a tough time gaining them after about 5700rpm. It gains & looses revs real nice and idles like a peach. 1 kick starter. Plugs look like god breathed on em.. great color.
Im hoping to re-join the century club if possible... But mostly just want to hit the redline for a sec if I see fit. haha.
Thanks as always!