OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions on Other Engines Replica Honda engines, Scott Bonner & Pope.

Mark, if you had to fit the other chonda's ignition module, it sounds as if one of them was a different sized engine from the other.

Honda used two different ignition modules on the small vertical engines. This one was used on the GXV120:


This one was used on the GXV140:


Note the offset mounting holes on the GXV140 module, which Honda described as Capacitive Discharge. You can see that the GXV140 had mounting holes for both modules:


The GXV120 module (called N type) used yellow and red holes, the GXV140 module (the CDI one, called A type) used yellow and green. I haven't heard of an N type module being fitted to a GXV140 engine. You have to put spacers under the CDI module, to bring it to the correct height to match the flywheel - it has a thinner laminated core.

The GXV160 cylinder casting also has the bosses for all three holes, and may be fitted with either N type or A type module. It requires 3.2 mm spacers for N type, and 6.2 mm spacers for A type modules.
Flywheels have different heights to suit the spacers: no spacers for GXV120, short spacers for GXV140 with A type, short spacers for GXV160 with N type, and tall spacers for GXV160 with A type.

Note that The GXV120 only has two mounting pads for the module on the cylinder casting, and only the N type module can be fitted.

I think you'll find that chondas use exactly the same system as Honda for all that.