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E12-80 distributor conversion

Old 12-30-2005, 03:25 PM
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E12-80 distributor conversion

Im going to do the 280 ZX distributor into a 240 Z conversion. According to everything Ive read, any of the distributors from 1979 - 1981 with the E12-80 ignition module will work. Along with the matching coil. I have two questions about this conversion that I couldnt find an answer to. I have searched.

1) Between 1979 & 1981 Nissan put ten types of distributor in the ZXs. The D6K8-22, D6K8-26, D6K8-02, D6K8-03, D6K8-05, D6K8-06, D6K8-07, D6K9-09, D6K9-10 & D6K80-03 in the non-turbo L28e engines. The question is, is any one of these distributors better or more suitable for the 240 Z conversion? I mean, why were there so many types, if there wasnt something wrong with the design or construction of some of them?

2) After the conversion is done, which spark plug should be used? The NGK recomended for the 240 Z, or the one recomended for the year ZX the distributor came out of? I would assume that the plugs should be the ones that are recomended for the year ZX the distributor came out of. But I can find no information or write up about this.

Thank in advance for any information that is forthcoming.
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Old 01-03-2006, 10:49 AM
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Not sure about those distrib types, as to which might be best. In any case, you'll benefit from getting away from the old points-style distrib. But, for the plugs, the proper plug depends much more on the head/block/piston combo and conditions than on the distrib. I'd stick with the NGK 240Z plug. Hopefully someone else on here might have some more info about those different production model distribs.
good luck,
Dave
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Old 01-08-2006, 10:36 PM
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Sparkplug choice has more to do with the conditions of driving. ie daily, hill climb, circuit and ambient temp, humidity also the displacement and firing position.

<o =""></o>All of the distributors will all still deliver the same size spark it only changes the timing. Timing varies depending on the vacuum from the manifold. It is how the distributor uses this information that improves the timing (and performance) from another distributor.

<o =""></o>By the way, Spark temperature is determined by the coil type. size and the type of sparkplug and lead used.
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