plattey
XS650 Addict
The car club that I am active in went to TriStates raceway this past weekend and I ran the old xs there. I have done the following to the engine:
stock xs650 pistons and rings
mild port n polish
vm34's
torque cones made from stock xs pipes
1 3/4" wrapped street pipes from hoosracing (end just after footpegs)
0.017" copper headgasket
no basegasket
NGK iridium plugs
performance coil from mikes'
re-timed cam back to stock timing
best time vm34 jetting:
190 main jet
17.5 pilot jet
159-p6 emulsion tube
6d-p1 needle clip in middle slot
2.5 cutaway slide
17/34 gearing
shifting around 7k~7.5k rpm (still wanted to pull strong past that pt but heard nasty tinking from the valves, thinking the valves and pistons were getting too closely aquainted )
in 4th gear through the traps
the scale at the track said: 610lbs with me on it and 430lbs for just the bike
Best run of the day was:
R/T 0.414
60' 1.986
330' 5.473
1/8 8.452
mph@ 1/8=81.41
1000' 11.076
1/4 13.331 @ 99.32mph
How does this compare to a stock bike?
stock xs650 pistons and rings
mild port n polish
vm34's
torque cones made from stock xs pipes
1 3/4" wrapped street pipes from hoosracing (end just after footpegs)
0.017" copper headgasket
no basegasket
NGK iridium plugs
performance coil from mikes'
re-timed cam back to stock timing
best time vm34 jetting:
190 main jet
17.5 pilot jet
159-p6 emulsion tube
6d-p1 needle clip in middle slot
2.5 cutaway slide
17/34 gearing
shifting around 7k~7.5k rpm (still wanted to pull strong past that pt but heard nasty tinking from the valves, thinking the valves and pistons were getting too closely aquainted )
in 4th gear through the traps
the scale at the track said: 610lbs with me on it and 430lbs for just the bike
Best run of the day was:
R/T 0.414
60' 1.986
330' 5.473
1/8 8.452
mph@ 1/8=81.41
1000' 11.076
1/4 13.331 @ 99.32mph
How does this compare to a stock bike?