W9 Magneto

[waldok1]

Does anyone know if the mag off of a M will work on a W9.
 

[Bob M]

Unfortunately no. An M magneto rotates the opposite direction from a W9.
 

[sflem849]

[rustred]

you bet it will, same mag.
the diesel engines mag turns opposite direction due to an idler in the timing gears thats the only diff., so dont get the 2 mixed up.
 

[Wardner]

Rustred is correct. Diesel and gas ignition have the same rotation in the 9 series. They are opposite in the 6 series. This also applies to distributer pump selection.
 

[Bob M]

Yes. All the diesels and the W9 gas mags rotate opposite the other IHC magnetos.
 

[El Toro]

Here's the rotation on mags and distributors. Hal

 

[rustred]

oh oh, the original answer is NO not yes as i said. w9 is opposite an m rotation, same thing and diff all at same time.
 

[n9lhm]

Note that the advance is different on the CCW mags between the gas and diesel 9 series applications -- the gassers take a 35 degree advance impulse coupling and the diesels take a 15 degree advance.
 

[sflem849]

[rustred]

basically yes the diesel m mag will work on his w9 but have less advance, as noted.
 

[sflem849]

[Wardner]

.Deleted
 

[n9lhm]

Mark"s Magneto Service will exchange the 15 degree impulse cup for a 35 degree one for a nominal price. I did that with a W9 gas mag that I had so I would have a complete spare mag for my MD.