Which wires for '03 2500 hemi?
Alot of people are adding SHORTY wires... instead of crossing your intake they just go to the second plug in that cylinder... they look alot cleaner and from what I understand they offer better POWER...
SPEED SAFE, AIR RAM
SPEED SAFE, AIR RAM
I'd would imagine that the Dodge engineers used the alternate coils as a way of ensuring maximum power to each of the 2 plugs. By using a shorty cable from the one coil, only 1/2 the output would go to each plug. Of course, nowadays, there's so much power from the coil, there's probably plenty to drive 2 plugs. But, it makes me wonder why the engineers would go to all the trouble with that rats nest of cables if they didn't really need to--and it's cheaper using shorty wires. Also, I noticed the 2006s have a coil for each plug--16 coils. Can't understand why they would add all that cost if one coil could drive 2 plugs.
Never mind... I just realized the coil on the opposite cylinder is also firing a plug. Thus, a short wire delivers exactly the same power as the crossover wire. Again, it makes me wonder why the Dodge engineers didn't realize this and go with a much shorter wire with less clutter and less resistence. Seems like such a waste unless there's a coil reliability issue--if one coil misses, the other will fire the 2nd plug. And, why did they go to 1 coil per plug in 2006...
Roger...
Never mind... I just realized the coil on the opposite cylinder is also firing a plug. Thus, a short wire delivers exactly the same power as the crossover wire. Again, it makes me wonder why the Dodge engineers didn't realize this and go with a much shorter wire with less clutter and less resistence. Seems like such a waste unless there's a coil reliability issue--if one coil misses, the other will fire the 2nd plug. And, why did they go to 1 coil per plug in 2006...
Roger...
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I am about to install my shrty wires when I get the free time. When ever that comes along!!!!! But , Does anybody have them installed . We would like to know how they perform and is there any differance inthe trucks performancebetween the short and long ones.
ORIGINAL: reiderr
Never mind... I just realized the coil on the opposite cylinder is also firing a plug. Thus, a short wire delivers exactly the same power as the crossover wire. Again, it makes me wonder why the Dodge engineers didn't realize this and go with a much shorter wire with less clutter and less resistence. Seems like such a waste unless there's a coil reliability issue--if one coil misses, the other will fire the 2nd plug. And, why did they go to 1 coil per plug in 2006...
Roger...
Never mind... I just realized the coil on the opposite cylinder is also firing a plug. Thus, a short wire delivers exactly the same power as the crossover wire. Again, it makes me wonder why the Dodge engineers didn't realize this and go with a much shorter wire with less clutter and less resistence. Seems like such a waste unless there's a coil reliability issue--if one coil misses, the other will fire the 2nd plug. And, why did they go to 1 coil per plug in 2006...
Roger...
When one cylinder is on its compression stroke, its companion cylinder is on the exhaust stroke. The voltage required to fire the spark plug is directly related to the pressure in the cylinder. Since the waste spark cylinder is on the exhaust stroke, its pressure is low so it uses very little of the spark voltage. Almost all the voltage goes to the high pressure cylinder on the power stroke.
So, I may be missing something, butwouldn't shorty cables cut the voltage to each plug nearly in half? i.e. with shorty cables you have only one coil feeding 2 plugs which are bothin high pressure instead of 2 coils feeding 2 plugs in high pressure.
I just put them in my Ram. Seatofthepants-o-meter tells me it feels smoother and seems to have a bit more punch down low. Find out tomorrow about mileage and higher speeds. Fairly painless after the air box was out of the way.



