you cannot have this machine 180* off on the valve timing...
reason? the spark fires at both the POWER STROKE.....and the EXHAUST STROKE...
hence the term "wasted spark engine"....
the spark fires each and every time the piston reaches TDC..... therefore it can NOT be 180* off....or 360* off depending on how you look at it....
HOWEVER....on a side note... it is nearly impossible to align the timing marks and complete this process when the lobes are facing forward/down on the bumpstick.... reason being.... you are now pressing on the valve springs... which makes it EXTREMELY difficult to rotate the engine to get at a TRUE TDC....
like Mccune said....the easiest / best method is to use the flywheel 'T' mark.... (the 'F' mark is the timing advance mark)..... however, the flywheel 'can' become misaligned due to a half moon key issue...... so I tend to use the crank gear TDC mark....
to each their own.....
**06 450ER**... #3 (Dale lives on)
86TRX250R (mostly stock 66mm bore x 72mm stroke) **for sale**
86TRX250R (ESR310 72.5mm bore x 72mm stroke '298cc' fully modded) **SOLD**
88TRX250R (ESR330 77.5mm bore x 74mm stroker '345cc' fully modded)
HRC kit (all but gone)
Hot Cams stage III
Okie porting w/ATP CV4 springs (36mm Ti/31mm)
Venom/KBR N2O Porting w/KW springs (37mm/31mm)
Venom/KBR 487 100mm 14.25:1 piston
Cold Fusion Nitrous**
Venom 'QP' pipe
ESR Pro Series pipe
ESR modded intake w/RAT stack
42mm Taper-Bored FCR
Direct Drive clutch lockout, CR500 springs
GT Thunder-Link w/Durablue Lowering Link
Durablue Anti-Sway Bar
Modded shock mounts
Rage Modded Tranny
Jetting/Carb: #168, #45slow, NGPR needle 3rd clip, #55 Leakjet, Pilot 2 turns out.
Jetting/N2O: 22N/21F (22hp)
*STU Comp Cut 21x12x8 (6) paddle 'Padla Brats' on Douglas Blue label 8x8.....
Thanx to: Venom/KBR (Mixxer/Kam), Rage ATV (Dee), Sredum (Chris), and many ORG members