The 6v coil is 2 ohms and draws 3 amps on 6 volts. Shop ... Classic Car Ignition Coil 16 Ohm Ballast Resistor, 134176A, GT6, GT7, TR6, Stag. It isn't, however, just that simple. A Pertronix II or III is a different story. Interesting, a 71 car should have no ballast resistor and use a 3 ohm coil. Output 29.1 kV @ 100Hz. Requires 9 V supply, with ballast resistor of 1.8 ohms. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. Shop with confidence. Multi-meter Ohm Setting. A ballast resistor is a resistor inserted into a circuit to compensate for different changes. It can either be a ballast resistor or a resistor wire. A “standard” coil will have an internal resistance close to 3 ohms on its primary windings. As Rob says, surprising an unballasted 1.5ohm coil hasn't cooked but maybe you haven't been on any long journeys. If you use the coil with the external resistor just make sure you have an external resistor. From United Kingdom; 4. Thing is someone says I need a ballast resistor or I may blow up my tacho?? External Resisted Ignition Coils have an internal resistance of 1.5 Ohms and when combined with the Ballast Resistor you get a total resistance of 3.0 Ohms which is necessary for 12 Volt ignitions systems. First, the ballast resistor is the long, white ceramic thing attached to the left side of the coil assembly. You should be getting 9 … By the formula I found (Ohms x 2= volt drop) a 1.25 Ohm resistor would work. I believe single should read 1.8 ohms and dual should read 1.8 and 5 ohms. In order to maximize the coil's output during starting, ballasted ignitions have a ballast bypass which sends 12 volts directly to the coil during startup. To test your ballast resistor you need an ohm meter or multimeter set to ohms as previously suggested but you really need to remove the connectors from both sides of the resistor. This is a resistor inside the coil on the primary side that reduces the current flow partly so the points don't burn up. Total about 3 ohm total If I keep the ballast resistor then I think I buy a 1.5 ohm. I fitted a small relay from the junk box with its coil in parallel with the starter relay coil. Why? That's my $.02 Basic function: the ballast resistor is a resistor contained in the primary ignition circuit wiring that lowers voltage after the engine is started to reduce wear on ignition components. Secondary resistance - 8 - 10,000 ohms. Order Ballast Resistor for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. Product Line : Balkamp. The external resistor coil most likely has 1.5 ohms resistance, so you need a 1.5 ohm external resistor to have 3.0 ohms. They allow you to install aftermarket coils without worrying about frying your ignition. The ballast resistor. The external ballast resistor (or resistor wire) will provide an additional 1.5 ohms of resistance. The coil is a Pertronix Flamethrower 1.5 ohm coil, same ohm value as the factory original coil. Ballast Resistor. I have a factory tach that I still wanted to work so I kept the 1.5 ohm pink wire in place. So you should go with OEM voltage delivery. In my research I have read on here some of Bubba's threads and posts recommending 3 ohms resistance in the 12 volt+ feed to the coil. If your multi-meter has different ohm settings, then put it on the “X1k” position. The Flame Thrower 40,000V coils have internal resistance rated at 1.5 or 3.0 ohms. Two commonly available 3 ohm coils are the Napa IC14 and the Pertronix High Voltage 40511. Iput 4000 miles on the clock in the last year. And as mentioned, a 1.5 Ohm coil without a ballast resistor will be pulling 14.5/1.5 = 9.7 Amps. A ballast is a kind of resistor who resist the current in the electrical circuit. The ballast resistor, supplies the needed voltage during the start up, and then immediately after the arc is established, it reduces the voltage in addition to regulating the current flow. The resistor wire between the ignition circuit and the coil fried so I am replacin it with a ballast resitor to drop the voltage fro 12V to 9V so I don't burn up the coil. Find great deals on eBay for ballast resistor and lucas ballast resistor. The 5.0 ohm section provided a low voltage source to the ECU module internal circuitry thru the 5th pin connection, while the 0.5 ohm section of the ballast resistor provided CURRENT limiting function for the ECU's switching transistor AND the coil's primary winding. According to the paperwork that I have for my Lumenition kit, the power module is suitable for coils or coil/ballast combinations of not less than 3 ohms. A set of points would die in about a day with that much current. It say's OEM replaceent, it also shows a 1.76 ohm resistance built in primarily. For what it's worth, I have been using a ballast resistor on my CD175 for a few years now with no problems at all. But check and double-check. Peak current 3.7 A. Secondary turns - 24500. Unsure how to tell if your Classic British Car has a ballast resistor or not? The 1.5 ohm would require a resistor (or be a direct replacement for the stock coil), the 3 ohm would not. Tech Question Erik Bakko, Brooklyn, NY, 72 Dodge Swinger 318ciDear Mr. Mopar Guru,My ballast resistors have an expected life span of 3 months in my Dart. Ballast Resistors, Marine Coil Resistors, 1.50 ohms Resistance, Each. Others might give a different answer to the question “what is a ballast resistor” like this: A resistor that has the property of increasing in resistance as current flowing through it increases, and decreasing in resistance as current decreases. EUR 9.98 + EUR 4.74 postage; 9 Watching. The coil is from an early 50s Ford 2 ton it tested at 1.8 to 2 Ohms, the high tension wires are used, the ballast resistor was used on this engine, prior to its being parked for 6 years. About the Product. Pickup in Store not currently available. You can detect the presence of the resistor by measuring the ohms of primary side of the coil (terminal 15 vs. terminal 1). If the voltage measures more than +14.2 volts, you'll need to replace the voltage regulator, install a coil with 3 Ohms or more internal primary resistance or install a 1.4 Ohm external ballast resistor between the ignition switch and the coil's + terminal. Ballast Resistor For Use With A 1.5 Ohms Ballast Coil X9E8 W2E 5 out of 5 stars (1) 1 product ratings - Ballast Resistor For Use With A 1.5 Ohms Ballast Coil X9E8 W2E Find Summit Racing SUM-G5218 Summit Racing® Ballast Resistors and get Free Shipping on Orders Over $99 at Summit Racing! But for a Pertronix I using a 1.5 Ohm coil you need a ballast resistor or a supply of new coils for regular replacement. If the tractor is equipped with a magneto, the basic ignition system itself will be unaffected by the change from 6 to 12 volts. If it's powered through a ballast resistor or resistor wire in it's stock form, then continue to use such ballast. it depends on which coil is used. Our Ballast Resistor is designed to be used in conjunction with our available External Resisted Ignitions Coils. What I am wondering is if the 1.6 ohm coil will have sufficient output for normal running with reduced voltage supplied to the primary due to the 3 ohm resistor? The alt wire is only 12 gauge, will change this to 8 or 10 gauge for permanent use. Another approach is to eliminate the ballast resistor altogether by using a replacement coil with 3.0 ohms of resistance. Check here for special coupons and promotions. I've blown up two of these, one from not having a matched coil and ballast resistor (the total series resistance from the input of the ballast resistor to coil terminal 1 MUST NOT BE LESS THAN 3 OHMS OR IT IS LIKELY TO COOK THE PERTRONIX), and second one from just being a dope. ARCELI 1460 Pieces Resistor Kit 73 Values 1%, 1 Ohm 1 M Ohm 1/4 W Metal Film Resistors Assortment for DIY and Experiments $13.99 Only 13 left in stock - order soon. My ballast resistor is 2.0 ohms and I have a .9 ohm coil. These Summit® ballast resistors are perfect for protecting your points-style ignition system. This Video explains how the Ballast Resistor Works.For additional How-to Tutorials Visit our Website: http://www.howstuffinmycarworks.com Our Ballast Resistor is designed to be used in conjunction with our available External Resisted Ignitions Coils.External Resisted Ignition Coils have an internal resistance of 1.5 Ohms and when combined with the Ballast Resistor you get a total resistance of 3.0 Ohms which is necessary for 12 Volt ignitions systems. Without a ballast, ... 3. Ballast Resistor in Fluorescent Lamp I have a 1986 Glastron with a 3.0 Mercruiser. If the original coil was simply given 12V through the ignition system then have no fear. The figure below shows a florescent light tube connected with a ballast resistor and a starting switch. That's with a 1.5 ohm ballast resistor and a 1.5 ohm coil. The solution to this problem was the ballast which reduces the voltage down to the 6-9 volts the 1.5 ohm coil prefers. Part # : BK S43243. The resistor being internal or external does not matter. I am in the process of installing a points distributor system in my model T (SBC). IF you are using the Mopar electronic conversion ignition system ("Orange box") the ballast resistor is 0.8 ohms. The ballast resistor has a resistance of 1.6 ohm. When I changed to 12v I kept the old coil and fitted a 2 ohm resistor in series. 2.9 total. Can I remove the ballast resistor and run a 3 ohm coil? I'm not sure what this littlegem does exactl Skip to main content. When voltage is tested, coil negative connected to gound and key turned to on, there is … Check the multi-meter ohm setting. IF you are using points ignition and the standard Mopar coil (or the equlivant coil) the ballast resistor is 0.5 ohms. We apologize that this item is not available for pickup in … The coil for a ballast ignition system will have a primary winding resistance between 1 and 2 ohms. 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