TOPIC:

Since my GEREX CDI finally died after 27 years on my '73 Z1-900, I got a Dyna 2000, Dyna 2.2 ohm coils, and Dyna Spark Plug wires. I was told to use 0.024"-0.028" for a spark plug gap.

For those of you who have used this setup over the years, can the Dyna 2000/Dyna 2.2 ohm coils handle larger gaps? If so, how large?

You see, the old GEREX CDI permitted use of 0.060"+ spark plug gaps. In fact, there was a time years ago when I failed to check the plugs on this bike. And I only checked my spark plugs one day because the engine felt a little hesitant but only in the mornings. Well, I had let spark plug gap grow to 0.110"!

Point is, I've been out of the 'new ignition' marketplace for some time and I found a spark plug gap recommendation of "0.024"-0.028" somewhat tiny.

Post edited by: BohicaBob, at: 2007/07/06 17:55

Post edited by: BohicaBob, at: 2007/07/06 17:55

I would run the gap as recomended in the kaw book, dont have it front of me right this moment

Bohicabob,

I think you are forgetting a '0' in your measurements...
A sparkpluggap of 1,5 centimeters (huray for the metric system) is really really big...

I recently saw a link to this site:
www.aperaceparts.com/COPE.HTML

This is what they say:

Spark Plugs
Racing motors usually require a heat range one colder than stock. We recommend NGK plugs. For a Suzuki GS1100-1150 use a D9EA. For a Kawasaki KZ 900-1000 use a B9ES. With a Dyna-S ignition and aftermarket coils run a gap of .028. If your vehicle has a MSD box or Dyna 4000 ignition run a plug gap of .018 - .020.

Maybe it is of some help to you...

Over here we have the metric system AND quarter pounders... The best of both worlds...

Post edited by: Paling1, at: 2007/07/02 05:00

Paling1: You are correct! Sorry about that.

Think I'll experiment with various gaps in the 0.024"-0.028" range and see how the engine behaves.

I was wondering the same thing bob.let use know what u find out.