Coil differences throughout the years
- Thread starter ThatGuy01
- Start date
This doesn't make any sense. If you look up the OEM part numbers, its
88-96
97
98-06
Here's all I know, from my experience, 88 is different than 05. 88 has a bullet connector on the end of a wire. 05 has a spade terminal built right into the coil. I seem to remember that the primary resistance value is different between them. It would make sense that the 88-02 would be different than 03-06 because of the electrical differences, but Yamaha shows 98-06 all the same. Strange.
88-96
97
98-06
Here's all I know, from my experience, 88 is different than 05. 88 has a bullet connector on the end of a wire. 05 has a spade terminal built right into the coil. I seem to remember that the primary resistance value is different between them. It would make sense that the 88-02 would be different than 03-06 because of the electrical differences, but Yamaha shows 98-06 all the same. Strange.
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There is no coil ohm difference throughout the years 88-06. Only difference was some coils used a female spade connector for the + side and some used a female bullet style connector.
This is incorrect. I checked mine. My 88 measures 1.7 ohms. My 05 measures .2 ohms. I looked in the Yamaha factory service manual and they list spec at 1.44-1.76 ohms. In the 03-06 Yamaha supplement they list spec at .18-.28 ohms.
Go look at any year 88-06 generator/stator on oem microfiche site and you will clearly see the charge coil is all the same part number from 88-06. If the stator's charge coil doesn't change the ignition coil doesn't change.
Bluesman, you mentioned a difference in resistance values for the primary coil, is there a difference between the resistance values in the secondary coil?
Well, that's some jacked up logic. Have you dissected both styles of CDI boxes and analyzed the circuitry? If not, you don't know what kind of internal resistances are built into the CDI. Your logic is like saying that you put gas in a Yugo and you put gas in a Corvette and both cars will take you down the freeway. Therefore, a Yugo and a Corvette are the same. I guarantee that if you take a CDI circuit that is expecting to send voltage to a 1.7 ohm load, and substitute a .2 ohm load, all the smoke is going to escape from the CDI.
Yes, 5.28-7.92K ohms for the early coil. 6.32-9.49K ohms for the 03-06. (Measured with the plug cap removed) but what year the changeover actually occurs seems to be a mystery. BTW, there are a few different part numbers for CDI boxes in the 88-02 year range also.
I just looked up the part numbers for the charge coil. 88-97 is 37A-85520-M1-00 and 98-06 is 14L-85520-M0-00.
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Now hold on there Bluesman, no need to attack DUALSTROKE, the guy knows his sh*t. Anyway, it's obvious that there are some differences in coils, you've proven that. However, it's beyond me whether or not it would actually cause problems.
FYI, when I rebuilt my blaster i ordered a new ignition coil and the description said '88-'06 (no typos). And as soon as I got it I checked the resistances (cause I trust no one) and they were all in spec to what the '88-'02 manual said. And my blaster is a '96 so all green lights for me. 
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I'm not attacking anybody. Just trying to keep somebody from smoking their CDI because of obviously wrong information. If you don't believe me, go wire your toaster into your dryer outlet and see what happens. If someone is holding an apple in one hand and an orange in the other, and insisting that they're the same, are you going to believe them?
i have no clue at all but look at this....first link is for a 88.....second link for 05 above the blue sticker it says the year or search it again....again just to look at not personal
http://www.motosport.com/atv/oem-parts/YAMAHA/1988/BLASTER/GENERATOR/COIL,-CHARGE/37A-85520-M1-00
http://www.motosport.com/atv/oem-parts/YAMAHA/2005/BLASTER/GENERATOR/COIL,-CHARGE/37A-85520-M1-00
....first link is for a 88.....second link for 05 above the blue sticker it says the year or search it again....again just to look at not personalhttp://www.motosport.com/atv/oem-parts/YAMAHA/1988/BLASTER/GENERATOR/COIL,-CHARGE/37A-85520-M1-00
http://www.motosport.com/atv/oem-parts/YAMAHA/2005/BLASTER/GENERATOR/COIL,-CHARGE/37A-85520-M1-00
First off, ditch comments about the toaster and the apples and oranges. You insult my intelligence sir and I do not appreciate it. Secondly, I AGREE WITH YOU. There is a potential for smoking CDIs or ignition coils. So people should pay attention to what parts they buy and make sure they are compatible. Good job on finding this out, btw.
ut oh just found this.....
http://www.rockymountainatvmc.com/oem-schematic/2#
select generator this site is not allowing me to open the pg directly
37A-85520-M1-00
(replaces part #
14L-85520-M0-00)
COIL, CHARGE
http://www.rockymountainatvmc.com/oem-schematic/2#
select generator this site is not allowing me to open the pg directly
37A-85520-M1-00
(replaces part #
14L-85520-M0-00)
COIL, CHARGE
ut oh just found this.....
http://www.rockymountainatvmc.com/oem-schematic/2#
select generator this site is not allowing me to open the pg directly
37A-85520-M1-00
(replaces part #
14L-85520-M0-00)
COIL, CHARGE
From searching and searching on google I was under the impression that the early model original coils had a with that connected to orange as a bullet style connect, and the updated new style coil has the spade... My 95 harness has the bullet style connection but a spade adapter... I'll find some pictures if I can
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