maxton207mph
XS650 Enthusiast
Does any one know the degree specs for a Shell #1 cam ?
Thanks
Thanks
This is good stuff!Yep, those were the numbers on Shell's timing cards, but they were usually not the numbers that his grinder produced; with the exhaust valves dialed in at 45/25, you'll usually see the intakes opening at ~20 and closing at 45 as on my own cam, bought in 1998.
I tried timing to the intake events, splitting the error between intake and exhaust, and timing to 100* lobe centers, but accepting late intake opening is the setting that's felt best to me; if the Shell #1 is advanced much at all, I find myself doing a lot of short shifting.
~snip I tried timing to the intake events, splitting the error between intake and exhaust, and timing to 100* lobe centers, but accepting late intake opening is the setting that's felt best to me; if the Shell #1 is advanced much at all, I find myself doing a lot of short shifting.