Spark plugs
Outstanding HDF Member
Joined: Apr 2008
Posts: 3,140
Likes: 17
From: Wisconsin
Road Captain
Joined: Apr 2010
Posts: 692
Likes: 34
From: Texas
Got to be a habit during my early days getting my shovel to run. Yep, I know probably a waste for the Ultra. Heck I just reread the H-D maintenance and they show replacing them every 10K.
Road Master
Joined: Jun 2010
Posts: 1,221
Likes: 4
From: Annemasse (border of Geneva-Switzerland) facing Mt-Blanc.
Is there a reason why you chose a cooler plug? I thought the dcpr7e was the equivalent to the standard 6R12. Most likely the additional heat generated by the lean mixture will help to ignite a cooler plug in the low revs.
Road Warrior
Joined: Sep 2008
Posts: 1,465
Likes: 16
From: Nor Cal
+1 on the Autolites. I've run stock Champions and the Autolites it seems the Autolites are better, no scientific research to back it up. I was running Autolites back in my small block chevy performance days and I tried just about every plug back then and I always went back to good 'ol cheap Autolites. I can't offer a opinion on the iridium plugs never used them.
Road Master
Joined: Jun 2010
Posts: 1,221
Likes: 4
From: Annemasse (border of Geneva-Switzerland) facing Mt-Blanc.
It's a residual ionization sensing device, so all it needs is equivalent resistance of both the plug and wire (in each cylinder) to measure voltage/intensity through the plug.
Tourer
Joined: Mar 2008
Posts: 413
Likes: 7
From: Oklahoma
And a hotter plug disapates its heat slower.
check out my website http://www.pulstar-incognitoproducts.com
PulstarŽ "Power Sports Series": Released November 2010 Expected lifespan: 75,000-100,000 miles
For 100 years, ignition technology has been dominated by spark plugs . Pulse plugs are a radical departure from spark plugs. Their physical dimensions are the same as spark plugs because they have to interface with the engine and ignition system just like spark plugs. But this is where the similarity ends.
Pulse plugs incorporate a pulse circuit, which stores incoming electrical energy from the ignition system and releases the stored energy in a powerful pulse of power. Instead of 50 watts of peak power typical of all spark plugs, pulse plugs deliver up to 1 million watts of peak power. So where does the pulse plug get its incredible power?
When the ignition signal is sent to a traditional spark plug, it begins to ionize the spark gap. This means the voltage builds in the gap until a spark can be formed. During this ionization phase, which lasts about 5 millionths of a second, the incoming voltage (which has nowhere to go) heats up ignition components including the spark plug. This is wasted energy. When the ignition voltage overcomes the
resistance in the spark gap, the spark is created with an initial discharge of approximately 50 watts. Once created, the spark resides between the electrodes at very low power for over a period of 30 millionths of a second.
What’s different about a PulstarŽ Pulse Plug is instead of heating ignition parts during the ionization phase, this energy is stored in the integral circuit inside the pulse plug. When the ignition power overcomes the resistance in the spark gap, the pulse circuit discharges all of its accumulated power – 1 million watts – in 2 billionths of a second!
A simple way to think about pulse plugs is they are similar to a camera flash, whereas spark plugs are more like a flashlight. A camera flash is exponentially brighter than a flashlight even though they both may use the same battery.
With increased cylinder pressure, the pistons are pushed down with more force, which, in turn, generates more torque in the crankshaft, more liveliness to the throttle and more power to the wheels.
Of course, if you don’t use this torque to go faster, the engine does its work with less effort resulting in better fuel economy.
Another way PulstarŽ improves efficiency is by reducing cycle-to-cycle variation. Cycle-to-cycle variation occurs in every engine to some degree and is caused by the dynamics of combustion, load, fuel quality, mixture of air to fuel and many other combustion variables. These variables can cause the spark plug to generate a weak spark and in the worst case, a misfire. This variability in ignition timing robs all spark ignited, internal combustion engines of up to 10% of their efficiency.
The powerful spark of PulstarŽ ignites fuel more precisely, which can reduce cycle-to-cycle variation by up to 50%. This is an important contribution to improving fuel economy.
PulstarŽ "Power Sports Series": Released November 2010 Expected lifespan: 75,000-100,000 miles
-
- Gain up to 12% more horsepower (very cost effective)
- Gain up to 10% improved MPG (will pay for themselves in better fuel millage)
- PulstarŽ Technology burns fuel 60% quicker, than ANY Spark-plug on the market today
- 30-day money back guarantee
- 2-year Warranty
For 100 years, ignition technology has been dominated by spark plugs . Pulse plugs are a radical departure from spark plugs. Their physical dimensions are the same as spark plugs because they have to interface with the engine and ignition system just like spark plugs. But this is where the similarity ends.
Pulse plugs incorporate a pulse circuit, which stores incoming electrical energy from the ignition system and releases the stored energy in a powerful pulse of power. Instead of 50 watts of peak power typical of all spark plugs, pulse plugs deliver up to 1 million watts of peak power. So where does the pulse plug get its incredible power?
When the ignition signal is sent to a traditional spark plug, it begins to ionize the spark gap. This means the voltage builds in the gap until a spark can be formed. During this ionization phase, which lasts about 5 millionths of a second, the incoming voltage (which has nowhere to go) heats up ignition components including the spark plug. This is wasted energy. When the ignition voltage overcomes the
resistance in the spark gap, the spark is created with an initial discharge of approximately 50 watts. Once created, the spark resides between the electrodes at very low power for over a period of 30 millionths of a second.
What’s different about a PulstarŽ Pulse Plug is instead of heating ignition parts during the ionization phase, this energy is stored in the integral circuit inside the pulse plug. When the ignition power overcomes the resistance in the spark gap, the pulse circuit discharges all of its accumulated power – 1 million watts – in 2 billionths of a second!
A simple way to think about pulse plugs is they are similar to a camera flash, whereas spark plugs are more like a flashlight. A camera flash is exponentially brighter than a flashlight even though they both may use the same battery.
With increased cylinder pressure, the pistons are pushed down with more force, which, in turn, generates more torque in the crankshaft, more liveliness to the throttle and more power to the wheels.
Of course, if you don’t use this torque to go faster, the engine does its work with less effort resulting in better fuel economy.
Another way PulstarŽ improves efficiency is by reducing cycle-to-cycle variation. Cycle-to-cycle variation occurs in every engine to some degree and is caused by the dynamics of combustion, load, fuel quality, mixture of air to fuel and many other combustion variables. These variables can cause the spark plug to generate a weak spark and in the worst case, a misfire. This variability in ignition timing robs all spark ignited, internal combustion engines of up to 10% of their efficiency.
The powerful spark of PulstarŽ ignites fuel more precisely, which can reduce cycle-to-cycle variation by up to 50%. This is an important contribution to improving fuel economy.
Last edited by IncognitoProducts; Sep 28, 2012 at 08:23 PM. Reason: Add photo