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Shortys or Full length spark plug wires for hemi???

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  #1  
Old 03-16-2008, 06:37 PM
kris2000 kris2000 is offline
 
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Default Shortys or Full length spark plug wires for hemi???

Im having a hard time figuring out if I need shorty or full length spark plug wires because shortys will fire both spark plugs at the same time but the full length fire them one at a time and the second spark is "wasted" on the exhaust stroke, from what ive read. But also, ive read that full length wires provide greater electric current thus providing more power/efficiency so i totally dont know crap.

What do you all use for your hemis'. I have to order some soon
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Old 03-16-2008, 07:13 PM
kenihemi kenihemi is offline
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Default RE: Shortys or Full length spark plug wires for hemi???

IMHO;

Shorties are for looks, nothing more. Some will say they feel better, etc., but nobody has ever proven it with solid numbers.

Depending where you live, if you live an emission wacky state, the waste plug handles that part of the emissions for you.

Having both plugs fire on the compression stroke does not provide any increas in power, refer to the first sentence.
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Old 03-16-2008, 07:30 PM
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Default RE: Shortys or Full length spark plug wires for hemi???

Quote:
ORIGINAL: kris2000

Im having a hard time figuring out if I need shorty or full length spark plug wires because shortys will fire both spark plugs at the same time but the full length fire them one at a time and the second spark is "wasted" on the exhaust stroke, from what ive read. But also, ive read that full length wires provide greater electric current thus providing more power/efficiency so i totally dont know crap.

What do you all use for your hemis'. I have to order some soon
No, longer wires have more resistance which will give you less spark...that's why people put high performance (low ohm's) wires on. With really short wires like shorties high performance wires aren't needed...short wires have low ohm's anyway.

The coils fire both plugs at the same time (or within milliseconds)soshorties should be fine. A plug won't fire during the exhaust stroke because you can get major damage if any unburned fuel ignites as the piston is on the exhaust stroke...it would have the same effect as detonation.

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Old 03-16-2008, 08:14 PM
kenihemi kenihemi is offline
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Default RE: Shortys or Full length spark plug wires for hemi???

Uh, that doesn't make any sense at all.

A spark on the downstroke is good for burning unburnt fuel, not anything like detonation. Detonation is also called pre-ignition. That means, before the top of the combustion stroke.

Our engines are designed to have the waste plug spark.

Second;

Read this about different spark plug wires, then tell us again about the resistance and all and make sure you have your solid numbers to prove what you say. Thanks.

http://www.magnecor.com/magnecor1/truth.htm
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Old 03-16-2008, 08:52 PM
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Default RE: Shortys or Full length spark plug wires for hemi???

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ORIGINAL: kenihemi

Uh, that doesn't make any sense at all.

A spark on the downstroke is good for burning unburnt fuel, not anything like detonation. Detonation is also called pre-ignition. That means, before the top of the combustion stroke.

Our engines are designed to have the waste plug spark.

Second;

Read this about different spark plug wires, then tell us again about the resistance and all and make sure you have your solid numbers to prove what you say. Thanks.

http://www.magnecor.com/magnecor1/truth.htm
It doesn't make sense to you becauseI said exhaust stroke...which is an upstrokethat pushes the exhaust out the exhaust valve. The OP said the second plug fired on the exhaust stroke and I said it doesn't....not sure what doesn't make sense. And yes if fuel ignitied on the exhaust stroke it would be like detonation...the explosion resulting from the plug firing would try to push the piston down as it's coming up. You could easily snap a connecting rod if the explosion is strong enough..

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Old 03-17-2008, 06:32 PM
kenihemi kenihemi is offline
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Default RE: Shortys or Full length spark plug wires for hemi???

Ok know it all.

I said downstroke, my bad, I meant exhaust stroke. But you are still wrong.

You said;

"No, longer wires have more resistance which will give you less spark...that's why people put high performance (low ohm's) wires on. With really short wires like shorties high performance wires aren't needed...short wires have low ohm's anyway.

The coils fire both plugs at the same time (or within milliseconds)soshorties should be fine. A plug won't fire during the exhaust stroke because you can get major damage if any unburned fuel ignites as the piston is on the exhaust stroke...it would have the same effect as detonation"

Guess you didn't read the link about wires or you heard different from your friends, oh well.

Within milliseconds? Electricity travels at the speed of light, do have a way a measure the delay in a one foot wire that we are not aware of?

Since you say the 12-15" longer plug wire makes more resistance, can you help us with how much more, also, at the high voltage that our coils produce, can you determine the amount of drop in the spark due to all that added resistance??

You say that "people" use low resistant plugs..... What people?

One more thing. Can you help us with how much positive or negative timing our engines have during normal ignition running and explain how it works? For instance, does our spark plugs fire on the combustion stroke before, during or after the top dead center piston relation to the cylinder. Thanks. I think that will help a lot of folks here.

Go back and read the link. It will help you, honest.

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Old 03-17-2008, 06:51 PM
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Default RE: Shortys or Full length spark plug wires for hemi???

It's all basic knowledge man, no need to get butt hurt from being corrected...especially when you tried correcting me first. I didn't get all pissy about it all i did was correct you...so grow the hell up. If you spent less time being defensive and more time learning you might actually know something.
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Old 03-17-2008, 07:01 PM
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Default RE: Shortys or Full length spark plug wires for hemi???

BTW I glanced at your article...I didn't see anything in there that disproves what I said about the length of wire contributing to the overall resistance of that wire. Low resistance wires are great for the traditional distributor setup because the wires are so long.
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Old 03-18-2008, 08:37 AM
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Default RE: Shortys or Full length spark plug wires for hemi???

the longer wires
delay the second sparkplug firing
and supposedly improve torque
in the low rpm range 1200-2200
where extra turbulence from two sparks at different times
is beneficial

at high rpms where the piston speed creates more turbulence
shorty wires make as much max hp
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Old 02-06-2010, 05:06 AM
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Interesting
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Old 02-06-2010, 06:22 AM
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Well with all the bitching that was done a the start. Still no one has just plain said the short wires, The long wires which ones for everyday driving.
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Old 02-06-2010, 09:17 AM
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Well, not to get in a pissin match with anyone but when I was lookin to replace my plug wires I did a lot of research on which would be better. I found all the answer I needed on BionicDodge. Go to the site and do a search on shorty wires, you'll find your answers. To just "plain say" the shortys are fine for everyday driving. It has been proven the you loose some hp with the shortys but from what I have read you would have to put it on a dyno to tell the difference it is so slight. For high performance apps the long wires have proven better. The guys who really "souped up" their engines always had to go back to the long wires to get enough spark.
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Old 02-06-2010, 02:22 PM
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from what i have learned about resistance and wiring from school it doesn't mater how long it is up to a point like 3-4 feet the loss is negligible it all about the type of wire and the way its packed in the casing so it wont lose energy
thats my $0.02
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Old 02-06-2010, 02:34 PM
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I have the 10ohm shorties on mine, cant tell any difference in both normal day-to-day driving and racing at the track.
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Old 02-06-2010, 05:34 PM
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Beastro, The shorty wires are going to do the same as what the 2006 and newer coils are doing "One coil per cilinder that is connected to both plugs without the sparkplug wire". The only reason I have the shorty wires is because they don't void any type of warranty "Like I still have one" and it just cleans up the top of the motor!
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Old 02-06-2010, 05:53 PM
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A waste spark system is when in the spark plugs fire in pairs, on both the exhaust and compression strokes. The extra spark on the exhaust stroke has little effect and is thus "wasted". Actually a "wasted spark" is not wasted. This method of firing multiple spark plugs was implemented by many manufacturers as a way to reduce exhaust gas emissions and production costs. It reduces production costs by requiring less coil packs. For example: a V-6 engine would only need three coil packs instead of six, this is because an idividual coil fires two spark plugs at one time, one spark plug on a compression stroke (which is where the power comes from) and one spark plug in another cylender on an exhaust stroke, simultaniously. This method of "double firing" also reduces exhaust gas emissions because the spark plug that is fired during the exhaust stroke burns (or cleans up) remaining fuel left over from the previous combustion stroke before it has a chance to exit the engine through the tail pipe.
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Old 02-06-2010, 06:15 PM
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v6 only needs 3 coils? Dont know if thats right, because if that were so the Hemi would only need 4 in your forinstance! The new hemis dont have the waist spark I'm guessing because it didn't really help all that much. As for cleaning up the exaust isn't that what the catalitic converter is for?

Last edited by Skywalker; 02-06-2010 at 06:18 PM..
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Old 02-06-2010, 07:36 PM
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Quote:
Originally Posted by Skywalker View Post
v6 only needs 3 coils? Dont know if thats right, because if that were so the Hemi would only need 4 in your forinstance! The new hemis dont have the waist spark I'm guessing because it didn't really help all that much. As for cleaning up the exaust isn't that what the catalitic converter is for?
If the hemi only used 8 spark plugs, that would be the situation, it would have 4 coils. Each coil would operate the plug its on, and one on the opposing side. But, being that a Hemi used 16 plugs, and only 8 coils, it is a type of wastespark system.

I stand corrected(although no one caught it), so I'll just state this. Not only does it fire on the top of the compression stroke, but it fires again on the downstroke, or power stroke.

The second ignition allows additional power in the down stroke while lowering the need for restrictive catalyst plates in the converter. As you may recall, in the 1980s Japanese manufacturers reduced unburned hydrocarbons by placing spark plugs either in the exhaust pipe (which fired with every piston ignition) or in the exhaust manifold (which fired each time their corresponding cylinder fired). Chrysler morphed this idea to include dual fired plugs on each cylinder, which allows the firing to take place closer to top dead center, and then again when the piston is on the back side of the power stroke.

Last edited by Fathead_03; 02-06-2010 at 07:39 PM.. Reason: corrected misspellings
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Old 02-06-2010, 08:46 PM
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Even more interesting.
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Old 02-06-2010, 10:31 PM
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Does it really matter? This wacked out setup lasted a whopping 3 years before the FACTORY got rid of it and went to a single coil over 2 plug setup. In short: long wire retains wasted spark setup; short wire gets you as close to the later single coil setup as you can get without converting over. Pick one.
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Old 02-06-2010, 10:31 PM
 
 
 
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dodge, forum, hemi, ignition, length, magnum, msd, plug, plugs, ram, short, shorty, spark, wire, wires

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