low resistance spark plug wires

The issue is that most primary wiring now has many thousands of ohms resistance for modern highly computerized cars and .that is the point I am making. That is the lowest resistance of any helically wound wire. Keep in mind that all of this happens in a few milli-seconds. A damaged boot can impede proper spark plug wire seating and performance. Not all copper wires will cause failures. The failure is NOT in the wires, it is in the Pertronix itself. Simply attach or hold a meter probe on each end of the cable and read the total resistance on the meter. I then stripped the shiny and brightly coloured (Yes they did indeed LOOK like they belong on a race car) silicon outer layer to reveal the conductor core of the plug lead (the bit that sends the electrical spark to the plug). 100 ohms is a very very very small resistanceit will be there. Whats y'all take--04 rubi stock. cap is probably about 5000 ohms. My understanding from one of the usuals some while back is that the Champion spark plug screw-in terminals are not compatible with carbon core or spiral-wound plug wire - they are designed to be used with solid core plug wire only. Ok How about replacment plugs for the coil pack ignition systems that a lot of us have, for a hotter spark, better fuel burn, better MPG, more power, easyer start-up. Be sure to first check spark plug wires for visual damage.

I would probably disregard use by dates but my wife doesnt stand for such recklessness. High voltage output transistors are expensive, they dont put one in their output circuit thats more expensive than absolutely necessary. Its very important to verify that your spark plug wires are compatible with the ignition system, or any on-board electronics in general. ARE "LOW RESISTANCE" SPARK PLUG LEADS ALL THE SAME? Do Not Sell My Personal Information -, By logging into your account, you agree to our. So I was checking voltage and currents at the coil with a meter. Nick, Turns out, solid core wires were indeed installed, so I purchased a set of Flame-Thrower low resistance wires from Pertronix I carefully removed the old solid core wires and disconnected (unscrewed) the Champion spark plug ends , I cut them to length and stripped about 3/8 to 1/2" of the insulation to leave the carbon core exposed. If you have lower resistance wires then you will have higher current flow through the wires. Then after you do each connection. ng Demon coil and low resistance spark plug wires. Higher resistance in series means less current for a given voltage magnitude - ohms law, so Bradlybob is correct. Consult a tune-up manual for exact specifications.. I stood my ground went somewhere else and purchased a set of MSD 8.5mm Super Conductor Leads and fitted them to the engine. Ahhhthanks for the link. I spoke with a tech (Frank) at Pertronix, who informed me that the Pertronix ignitor is not compatible with solid core spark plug wires. Anybody that knows me will understand my absolute passion to get to the bottom of something and I just had to know what was wrong with this questionable lead (And the other three leads that were are causing the my spark plugs to foul up with carbon. But in reality, it does not matter. My English teacher Miss Handley would point out that you can, but you may not. A quick change of the front four spark plugs (Cylinders 1-4) saw the engine come to back life and BOOM, our race truck engine was again the fire-breathing beast we all saw on the engine Dyno. That said, I have driven tens of thousands of miles with an in-distributor electronic ignition and copper core wires. type ignition as in three coil fireing the six plugs.He said it is a coil on plug type setup so in theroy there should be 6 coils in that rail. Tom Das others have noted there is plenty of resistance in the combination of parts, including oft installed supressors, so that zero resistance is of course not a possibility in the entire ignition system, and close to zero for the wires is a goal for points distributors: the wire will have some small resistance, but without doubt, no more resistance is needed to be added in the primary wires. Same with the coil I suppose. After a restless nights sleep (ask my wife) tossing and turning thinking I have solved one of the worlds greatest mysteries, at the crack of dawn I jumped in the car and headed straight to the nearest speed shop to grab a set of MSD Spark Plug Leads to confirm my findings and get the engine to idle without fouling plugs once and for all. Tom, Powered by Discourse, best viewed with JavaScript enabled, mallory_instructions_unilite_distributor_37_38_45_47.pdf, Fact/Fiction, secondary circuit - E-Type - Jag-lovers Forums. A suppression style or spiral wound spark plug wire MUST be used. As it unravelled it revealed a stiff inner core that felt very different to the rubber feeling core that I found in my questionable plug lead. It should help with figuring out the spark plug wire being used on your engine. (Dont you hate it when one of your mates pops around and solves your 3-month problem in a few seconds)? You want the LEAST resistance possibleso you can have more electric spark energy. Suppression style or spiral wound spark plug wires must be used. http://www.pertronix.com.au/ignitor3.html. Mallory has a pretty clear warning for their Unilite products: To prevent false triggering and possible premature ignition failure, you must use suppression type (carbon core, spiral core, or radio suppression core) spark plug wire. The issue in the post was a narrow one - why did his ignition fail? Terry, follow the secondary circuit after it goes through the spark plug and to the engine ground. I suppose I got into the copper core preference from using them on my Triumphs as the distributor cap connections are the pointy-screw variety and do not work well the the silicone/carbon variety of wires. Proper wires solved the problem there too. To say a little more on that, I find that both of those numbers that you gave are considered relatively low. But one customer started to have repeated failures. We checked the ECU parameters, Air Fuel Ratio, Computer Settings, we changed coils, checked our ignition wiring, checked our fuel pressures, checked compression we checked everything and found nothing. Repro Champion ends have also created a huge number of problems for many people over the years. Solid Core Wires: You cannot run Solid Core Spark Plug Wires with an MSD Ignition Control. It obviously is physically possible and it is also possible to disobey instructions. This EMI can create confusion with electronics and ultimately damage them. ULTRA NARROW DIFFERENTIALS - TECHNICAL VIDEO, Reverse Drive Quick Change Transfer Case with Under Drive for 4WD Trophy Trucks, COAST TO COAST - RUNNING DIFFS BACKWARDS OR UPSIDE DOWN. Privacy Statement - 14 volts does not typically cause a spark. Show me why that is so if it is. After many months of annoying black spark plugs, Proformance Motorsport recently changed our Spark Plug Leads to the Awesome MSD 8.5mm Super Conductor Leads. Not changing the gap is fine if they are consistent however I found that perhaps due to shipping that the gaps were all over the place. better, high or low ohms for speark plug wires???? Plug Wires, Taylor,accel,magnecor,and Msd Wires. That low of a resistance wire will also cause distributor and coil problems. I believe should not is the right expression. Heres a articular written by our friends at Hot Rod Network showing pictures of the different wires. My first thought was the primary circuit was for some reason drawing too much current. Click here to search for Mopar cars and parts for sale. I have a Pertronix in my car so I have its install instructions (somewhere!) To accomplish this, we use a copper alloy conductor due to its great voltage carrying capabilities. Heres a guide for installing new wires if its time for replacements.. I have the needed resistance in the spark plug ends.

By the way some high resistance wire will NOT send the small tester 1.5 V battery current along a several foot length, so you get no continuity light. Turns but no fire! We encourage you to consult with a certified technician or mechanic if you have specific questions or concerns relating to any of the topics covered herein.Under no circumstances will we be liable for any loss or damage caused by your reliance on any content. (We are all told at school that rubber is after all an insulator right?). When the resistance is in the spark plug end, all cylinders have the same resistance. Repeatedly. Imagine the electrical system you would need to have to if you were using more current and less voltage to generate a spark. Like Geo Ive run many miles with a Pertronix ignition and copper wires. Pertronix says no solid core wire, but they dont tell you why. Our Digital Dash quickly pointed out the problem - the front four engine cylinders were burning at lower temps than the rear cylinders. Go back to the suppliers website and look at the spec of wires you purchased. Spark plug ends, rotors, distributor caps and yes buttons, etc. Scott Bryce - Owner Proformance Motorsport. Now onto the high tension wires RFI is inportant to me due to the fast that I compete in DBdrag racing and in usac(SQ). Therefore I suggest to take the spark plug lead from the coil, leave it connected to the coil, unplug it from the distributor cap, put the end about 1/4 inch from a ground, like against the cam cover, and crank engine. After screwing the first Champion spark plug end into the wire . Use tab to navigate through the menu items. This has been more than adequately proven by the failures on this forum alone, let alone countless others. Zero. Moparchat - Home of MOPAR enthusiasts worldwide! spark plugs you get better MPG and more power. Are you on the proper meter scale? Differences in resistance wire-to-wire do not matter one bit. I purchased a set of Flame-Thrower low resistance wires from Pertronix. My favourite is the sign at the foot of the escalators on the London Underground:- Dogs must be carried. She was the most likeable pedant I ever met. This choke, or suppression capability, keeps the EMI inside the wire where it cannot interfere with other electronics on your vehicle. Even with the fouled plugs, the engine ran fine. Check the fuel system and/or stark timing. If no spark, problem is low tension circuit and either 12 Volt wiring to Pertronix is not provding 12 Volts or failure of Pertronix, or Pertronix gap changed because screw holding Pertronix to plate loose and Pertronix gap to magnet changed (unlikely). DO NOT USE SOLID CORE WRES WITH ELECTRONIC IGNITION!! I also have copper wires on my S1 with Pertronix for years. An aerial is often made from a length of wire. The resistance should ALWAYS be measurable, so there is definitely a problem somewhere in the new wires, Champion ends, or the distributor-side wire ends. Turns out, solid core wires were indeed installed, so I purchased a set of Flame-Thrower low resistance wires from Pertronix. Here I was sitting at my bench with a super duper brand XXX Plug lead with nothing inside it but what appeared to be a black rubber band and an old MSD lead with multiple layers of insulation, heat proof fibreglass, large conductor core and some sort of tiny copper wire wound tightly around the core. The VAST majority of electronic ignitions will be damaged by use of solid core, non-resistance wires. ULTIMATE IFS WHEEL TRAVEL - THE SEARCH IS OVER, SOME THREAD LOCKERS CAN AFFECT BOLT TORQUE - BE CAREFUL. The ignition coil builds voltage until the gap is ionized (jumped across). I then concluded that whilst the leads I had purchased previously were indeed low resistance (I even tested them with a multimeter), the inner core that provided the low resistance on paper, looked like rubber, felt like rubber and performed like crap at sending a 40,000 Volt spark to my plugs. If you lower the resistance too low(IE: battery cable) you will transfer more amperage which will, melt plugs among other things. With the engine running, move the test light along the length of each spark plug wire. Whilst I appreciate that Kevin is a very smart business person, a race engine builder he is NOT, so I initially shrugged off his Silly idea suggesting to Kevin that all four front cylinders are playing up and the chances of me having Four Dead leads in a single batch were pretty low because the plug leads were brand new only 3 months ago. A good friend of mine Kevin happened to be visiting our race shop whilst I was again busy changing my spark plugs (for the 6th time in a few short months) and asked me if the problem could be a spark plug lead. The hot plasma of the spark ignites the compressed fuel/air mixture that is just waiting for any excuse to explode. As to your copper wires. I changed the plugs one more time and when we took the truck for another test session. I also noticed that the MSD silicon insulator was manufactured from a few different layers/colours of silicon AND some sort of white fibreglass looking heatproof material between each of the silicon layers. Attach a spark tester to the wire and to an engine ground. Quality of the wires should a prime consideration. JavaScript is disabled. Being an electronics engineer, I understand that a low resistance lead will result in greater spark at the plug, but I thought how the hell is electricity ever supposed to travel down this black rubber stuff? All rights reserved. Resistor wires will work just fine, and will also NOT create radio interference around your car. I understand Pertronix wants resistance in the wires. A forum community dedicated to Jeep Wrangler Rubicon owners and enthusiasts. Typically measuring 5000 ohms when new many quickly deteriorate to infinity, but surprisingly they often continue to work. We also used to sell tons of Pertronix modules. I would have NEVER believed that a set of plug leads could have caused so much frustration and so many headaches to my team.

(hotter spark, better burn ) would this affect cb's- radios-ect.) Vibration damage Constant wear and tear caused by engine vibration can loosen the electrical connection at the spark plug. Solid core wires do not suppress electro magnetic interference (EMT) which will interfere with electronics in your vehicle. Note the failures were not immediate. But my guess is the same as @EtypeLvr the range on the ohmmeter needs to be adjusted. Do what you want with your Pertronixdont mess with my points distributor. When we had the engine on the Dyno, because of the longer lead lengths needed to fit the engine and computer harness onto the Dyno, our team had used some old leads from one of our big block Hummer Engines. More current, more heat and induced noise in the rest of the electrical system. When driven at slow speeds, or when running at idle for a few minutes, the motor would start to backfire and run badly (Very Badly). If the car ran for a season, then I speculate the failure is not your high tension wiring to each cylinder. We took the Truck out Testing and the engine screamed at high revs, ran for hours of testing and everyone was again happy. Privacy Policy | Terms & Conditions | Anti-Human Trafficking | Warranty The meter said no continuity. and can tell you what the gap to rotor magnet should be. I know that Spark Plug Lead manufacturers advertise graphite core, carbon core, low resistance leads etc, but come on, whilst the material that this core did indeed have a low resistance (As stated by the manufacturer), the inner core was clearly manufactured from was flexible like rubber substance and was OBVIOUSLY the cause of my poor spark, my engine problems and my frustration. It would be an idea to check resistance before you assemble wires to the distributor. Needless to say, I was very impressed with the MSD Lead, when compared to the rubbish lead that I was holding in my other hand. An example, some years ago, we had a customer running Mitsubishi engines with Nippon Denso ignition modules (I believe that was the brand.) You cannot use solid core (typically copper) spark plug wires with this product. But I also noticed when I got the meter lead near the primary coil wire, I noticed a small spark jumping.

Run low resistance:get close and side by side to that brand new BMWand blow all its electronics!! Solid metal (copper, tin-plated copper and/or stainless steel) conductor wires are still used in racing on carbureted engines, but can cause all sorts of running problems if used on vehicles with electronic ignition, fuel injection and engine management systems, particularly if vehicle is driven on the street and damage to some original equipment and aftermarket electronic ignition and engine management systems can occur. The reason for the high resistance plug wires and plugs is to keep current to a minimum. Common signs of failing spark plug wires include a decrease in power, acceleration, and fuel efficiency. Every time we put in a new set of plugs, the engine was FINE when driven hard, but when driven at low speeds, moving the truck back and forth to car shows and events, and around our property, the front four spark plugs would simply foul up after 10-20 minutes of low speed driving. Problem with nonshielded type wires and low resistance plugs is they create higher EMF `s(electromagnetic fields) and while modern ignition systems are mildly shielded they can cause havoc with the computers reading millivolt and milliamp signals and can produce "dirty" power throughout the electrics. Its important to keep an eye on your spark plug wires to avoid subsequent engine issues. Typical wire resistance is ~1K, ,and the Champion ends can be much higher. To prepare the new wires, I cut them to length and stripped about 3/8 to 1/2" of the insulation to leave the carbon core exposed. As the electromagnetic field collapses in the coil the voltage at the plug gap rapidly increases to the point where a spark will jump across the gap, sort of like getting the crap shocked out of you after walking across the carpet and touching the door knob (high voltage, low current). Those who know about ohmsplease share your th. It all sounds kewl, but no.

But I can only imagine they would cause lots of rf interference. As others have stated, including you, there are sources of resistance in the secondary system. its not likely caused by his choice of solid wire. Best advise about them is not to use them, and particularly if you are not entering JCNA concours with the car. When in the wire, it varies with the length. Even with the fouled spark plug, the dead cylinder that was fitted with the MSD Lead fitted came back to life and the exhaust temp of that cylinder came back tonormal. Is this a good combination that listers have had success with? This winding procedure, combined with a Ferro-magnetic impregnated centre core, produces an extremely effective Electro Magnetic Interference (EMI) "choke". There should be a regular spark as you crank. This causes an increase in the voltage required to fire the spark plug, which could damage the ignition coil as well as the spark plug wires. Ignition Wiring - Rod & Custom Magazine. We immediately noticed a dramatic increase in throttle response, much more low-end power & torque and the engine absolutely screamed at high revs.

The next two spark plugs (2 and 3) were removed and found to be black with carbon, (not quite as bad as 1 and 2) and the rear most plugs (5-8) were a nice Tan colour as we saw on the Dyno. Do the Pertronix wires have some kind of connector already attached to the distributor end of the wire? Very reliable products. And why would they, as the Pertronix Ignitor is not connected to the ignition wires, it just triggers the coil to work. Fact/Fiction, secondary circuit - E-Type - Jag-lovers Forums I believe Robert gives a description, and there is a poorly drawn diagram. The following errors occurred with your submission. Resistance is not the most important detail to be concerned with when choosing spark plug wires. The content contained in this article is for entertainment and informational purposes only and should not be used in lieu of seeking professional advice from a certified technician or mechanic. Pertronix Ignitor is not connected to the ignition wires, it just triggers the coil to work. If you are running original type points distrubutor you want as close to zero resistance as possible. If problem is low tension circuit, I would suggest to put the points back and see if there is spark. The wire resistance would be something like 20,000 ohms (or 2k ohms) total - or per foot. If a spark jumps from a plug wire to the test light at any point, this is an indication that the insulation has broken down, and the spark plug wire should be replaced. Keep in mind PerTronix ignitions need carbon-suppression, or spiral-wound wire: The Society of Automotive Engineers suggests the maximum resistance should be 12,000 ohms-per-foot. Ohm specs for MSD and Taylor wires. Manuf. Well if it is a true DIS then the best/longest lasting plug would be a dual tip platinum.Because the arc jumps both ways and DIS fire twice as often.A true dual tip Iridium would be even better as it is a more durable metal and has a lower resistance than Platinum but it would be pretty expensive if they ever made such a beast.I`m pretty sure AC and Autolite make a reasonably priced dual tip with the extended electrode design that the 4.0l likes.Dr is right the computer is looking for missfires so if thats a problem it should show up.I honestly doubt you would see a substantial improvement in performance you just wouldnt have to change them as often.Kind of like extended service synthetic oil,though you might see some increases due to the decrease in frictional losses.The MSD 6AL I feel would help the ignition system burn every drop of fuel more completly if it can be used in the Ruby.I have done emission testing on non catted vehicels and they have always read less HC/CO/NOX with the MSD`s, More resistance = More amps or at least it should. The suppression wires do an excellent job of controlling the EMI with no degradation to the ignition performance. Later on, we had the same failure on other engines that had point systems converted to Pertronix. Weak sparks are orange or red and may be hard to see in daylight. At the distributor end of the high tension wire, the stripped core goes through the little copper washer (no soldering) and when you tighten the screw on connector, the brass washer crimps the wire core against the brass piece in the cap. Advertising - My question is, is that right? In a single 12 inch length of Super Conductor Wire there is only 40 - 50 ohms of resistance! Many modern wire sets are for modern cars that require tons and tons, like 50,000 ohms of resistance. I removed the Champion end and tested for continuity from the screw to the spark plug connection and did not get a reading there either. The instructions for mine - admittedly its older, dont say anything about the wires. Once this happens, voltage can jump to ground instead of reaching the spark plug. In summary, dont get fooled by Brand XXX race lead with Super Low ohms per foot or silly comparison charts showing how great one lead is compared to the other. 's p#'s. For a better experience, please enable JavaScript in your browser before proceeding. Given that you did have a failure, I suggest you check the distributor cap contacts for continuity (ie from inside of cap to outside with ohm meter. I measured the leads and the resistance was low as suggested by both manufacturers. So if the only "problem" your spark plug wires have is being OEM, it ain't gonna help to replace them. Will low resistance spark plug wires and a high output coil make, F54 :: Clubman Stock Problems/Issues (2015+). Further investigation showed that the front two front spark plugs (Cylinders 1 and 3) were completely fouled with thick black carbon, resulting in absolutely No Spark.

Solid Core wires do not suppress any Electro Magnetic Interference (EMI) which will interfere with electronics or rev limiters on your vehicle. After loading the truck up on the trailer and moving it around the workshop (dozens of times) to make way for other vehicles, our crew began to notice the bad idle and backfiring had returned!

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'03 Rubi with a few mods and under the knife again Well if it is a true DIS then the best/longest lasting plug would be a dual tip platinum.Because the arc jumps both ways and DIS fire twice as often.A true dual tip Iridium would be even better as it is a more durable metal and has a lower resistance than Platinum but it would be pretty expensive if they ever made such a beast.

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low resistance spark plug wires