[Diy_efi] small engine spark timing

[Steve Ravet]

> 
> If this Kohler is like mine (16hp K34(?) in a 310 Bobcat) the 
> timing is set by the point gap and the adjustment is very 
> touchy, must be done with the engine running as opposed to a 
> feeler gauge. A little reduction in timing can result in a 
> noticeably large loss of power also.

Mine is a 14 HP, not sure of the engine model.

> 
> These engines are usually used in a constant speed/load 
> situation like a tractor and so can run fixed timing for this 
> load. The Kohler also has a builtin compression release to 
> ease starting.

Makes sense...

> 
> If you get this to work well, I would be interested in 
> hearing what you did, mine gives continual point problems.

I ordered the "Ultimate Ignition system" from
http://www.kirkengines.com/.  The points are kept to trigger a
transistorized coil switch, the condensor is discarded.  This kit also
includes a Bosch coil.  There's an LED on the box that is used when
setting timing.

While searching around tractor sites I've seen David Kirk in several
places.  He seems to be an engine designer by profession and has written
quite a bit about modding Kohler engines.  I'll let you now how the kit
works out,

--steve