Pulse jet ignition widgets.

[Morrisman]

These things pop up every year or two in various places, in relation to BMW boxer motorcycle engines. They make great claims, seem to be a professional operation, but I’ve yet to see a dyno sheet proving them in a direct comparison with a standard plug equipped engine.

The one dyno sheet they did post, somewhere, a few years ago, was a very blurry pic with over laid lines, but no statistics or numbers.

Their web page waffles on rather vaguely, sounds more like AI work.

www.pulse-jetignition.co.uk

 

[Erie Fred]

Looks much like a glorified "Anti Fouler" that used to be sold behind the counter at every auto parts store
when you had a car that the valve stem seals leaked enough to foul the plugs.

Adding the angled holes to look like a diesel injector makes it look "cool"....

Might work, but aren't these lowering the compression ratio ?

 

[Morrisman]

Looks much like a glorified "Anti Fouler" that used to be sold behind the counter at every auto parts store
when you had a car that the valve stem seals leaked enough to foul the plugs.

Adding the angled holes to look like a diesel injector makes it look "cool"....

Might work, but aren't these lowering the compression ratio ?

I’d think they increase the compression ratio, marginally, if they’re taking up more space in the squish band than a stock plug.

 

[Pete.]

If they were that good major manufacturers would be using them.

 

[Morrisman]

Now they’ve posted a dyno sheet, predictably blurry. Red line is stock plugs, the others are with their widgets installed, I’m guessing it is a Harley twin cam motor.
25% more power, for a £120 investment? These guys would be retired and living the dream if what they claim is true.

 

[cheb]

Are they compatible with a Hilltop remap?