720kingkab Posted January 7, 2022 Author Report Share Posted January 7, 2022 i think stock distrib has slightly different design and stock distrib is needed for both coils to fire correctly, but i lack knowledge of facts thank you so much for helping me Quote Link to comment
datzenmike Posted January 7, 2022 Report Share Posted January 7, 2022 Correct, the 8 plug wire distributor has a 3 wire ignition module. (plus one wire for the shut off) One power wire 12v One wire to the negative side of the intake coil One wire to the negative side of the exhaust coil Quote Link to comment
datzenmike Posted January 7, 2022 Report Share Posted January 7, 2022 Uh that coil is wrong. Says to use with external resistor. Without it it will over heat. That is a points coil. PUT THE ORIGINAL ONE BACK ON. Quote Link to comment
720kingkab Posted January 8, 2022 Author Report Share Posted January 8, 2022 dont have original coil have not had original coils for years the other coil in use (that works ) is exact same model as this one seen here Quote Link to comment
datzenmike Posted January 8, 2022 Report Share Posted January 8, 2022 Those are points coils designed to work with a ballast resister and are not the correct ones for the 720. They will not only run hotter than they need to be but give less spark. If those are for a Datsun they would be for a '77 or anything older. Starting in '78 a high voltage EI ignition system is used with special low impedance coils. Not saying those won't work they are just not maximizing your ignition system's power. Like putting wagon wheels on a Corvette. Quote Link to comment
720kingkab Posted January 11, 2022 Author Report Share Posted January 11, 2022 my truck is 1981 i already have these coils in and dont have old ones . for years now where do i go from here ? can you give me link to where to buy two coils that are correct for 1981 z22 720 gas can i jump the wires from the coil that works over to other coil ? why was site down ? Quote Link to comment
datzenmike Posted January 11, 2022 Report Share Posted January 11, 2022 Oh they will work just run a little hot. Their output will be less than if you have the correct ones. Any auto parts store like NAPA or Rock Auto will have them. Ask for your year of truck. They must be for 12v use without ballast and have a 0.75 to 1.0 ohm primary winding resistance. You could jumper the good side to the other but that would put a strain on the one side. May burn it out or damage it. Check the wiring to the module... Quote Link to comment
720kingkab Posted January 11, 2022 Author Report Share Posted January 11, 2022 orielly says the coils i have are a direct replacement do you have another part number for a better coil ? thank you Quote Link to comment
datzenmike Posted January 11, 2022 Report Share Posted January 11, 2022 Your coils say "use with external resistor. No Datsun after '77 uses external resistors.... unless it says 'do not' on the hidden side. Better check. There is no better coil than the original. Nissan number 22433-N8711. Maybe they can cross reference it for another supplier. Quote Link to comment
720kingkab Posted January 11, 2022 Author Report Share Posted January 11, 2022 if i have choice of ohm which is better ? .75 or 1 ohm ? i am looking here https://www.summitracing.com/search/part-type/ignition-coils?N=filter-options%3Ain-stock%2Bprimary-resistance%3A0-700-ohms_0-760-ohms_0-800-ohms_0-820-ohms_0-900-ohms_1-000-ohms&PageSize=25&SortBy=DisplayPrice&SortOrder=Ascending Quote Link to comment
datzenmike Posted January 11, 2022 Report Share Posted January 11, 2022 That's just the range to expect on the stock coil. Not above 1.0 ohms. Quote Link to comment
720kingkab Posted January 11, 2022 Author Report Share Posted January 11, 2022 can you pick one from that summit list that will be best for me and i will order them please Quote Link to comment
datzenmike Posted January 11, 2022 Report Share Posted January 11, 2022 As long as 12v and do not require a ballast. I checked the 0.7, 0.8, 0.9 and 1.0 ohms and all use the same part number. So order which ever you like they are all the same. Summit Racing SUM-G5215 - Summit Racing™ High Output Ignition Coils Ignition Coil, Street Coil, Canister, Oil Filled, Chrome, 40,000 V, Each Part Number: SUM-G5215 ( 7 ) In Stock (more than 10 available) Estimated USA Ship Date: TodayEstimated International Ship Date: Today $29.99 Compare Wish List Quote Link to comment
720kingkab Posted January 11, 2022 Author Report Share Posted January 11, 2022 thank you so much for helping me Quote Link to comment
720kingkab Posted January 12, 2022 Author Report Share Posted January 12, 2022 i ordered two of the coils it was 78$ for two from summit with tax and s/h just 1 of the wrong coils from oreilley was 53$ Quote Link to comment
datzenmike Posted January 12, 2022 Report Share Posted January 12, 2022 What does the writing say on the coils you have? Before buying them, better make sure the old ones say 'must use ballast' with them. That would confirm that they are a points coil. Quote Link to comment
720kingkab Posted January 12, 2022 Author Report Share Posted January 12, 2022 i will get a photo of it posted later Quote Link to comment
720kingkab Posted January 13, 2022 Author Report Share Posted January 13, 2022 it says use with external resistor right on canister body of coil Quote Link to comment
datzenmike Posted January 13, 2022 Report Share Posted January 13, 2022 Good!! Then those are definitely the wrong ones. The lower resistance coils will produce a hotter spark. Quote Link to comment
720kingkab Posted January 13, 2022 Author Report Share Posted January 13, 2022 coils just arrived, i get them installed and post pix. Quote Link to comment
datzenmike Posted January 13, 2022 Report Share Posted January 13, 2022 You should have hotter spark now. This may improve cold starting. Quote Link to comment
720kingkab Posted January 13, 2022 Author Report Share Posted January 13, 2022 can anyone verify on their coil wiring that i have colors on correct polarity ? brown on positive blue on negative Quote Link to comment
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