Alky timing

[djackbanshee]

Stock stroke ftz ignition  ! What would be the max safe advance timing for alky ?  Total timing from tdc in inches ?

[trickedcarbine]

FTZ ignition..... That their sticker on a PVL or the MSD unit they used to push?

[djackbanshee]

Msd

[J-Madd]

 

Piston Travel vs. Crank Rotation

 

 

 

 

 

 

 

d = ((S/2) + L) - (S/2 cos X) - L sin[cos-1 (S/2L sin X)]

 

 

 

S = Stroke (mm)

 

L = Connecting Rod Length (mm)

 

X = Crank Angle Before or After TDC (deg)

 

 

 

 

 

I think 30 degrees BTDC is pretty common. If someone wants to  solve that equation for d, then convert from mm to inches that should give the answer. X = 30.

 

 

 

I've honestly forgotten how to use some of those functions on a calcutor.

 

[djackbanshee]

.176 thank you