Thanks to the help of several people across the country (via the web), I've finally tracked down the cause of the backfiring (afterfiring) as well as the immense raw-fuel smell that lingers around the car. It came down to the stupid little vacuum advance controller on the side of the distributor. Unfortunately Nissan no longer manufactures the part and I'm having a hard time tracking one down. Currently I'm looking into used distributors with 'ok' vacuum advances and talking to old Nissan dealers who may have a couple parts laying around. As a last ditch effort, I did find the source of some Datsun 510 vacuum advances which I may be able to modify to properly fit (and function) with the 240z. More to come!
17-Sept update:
I found a source in Mexico for similar vacuum advance controllers, specifically for the Datsun 510 pickup truck.. I may need to change the spring, but it should work as the dimensions and fittings appear to be the same.
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| Vacuum advance for Datsun 510 truck (22301 A3502) |
In addition, I found a lightly used distributor from European Z's that was imported into the States by Bob Sharp Racing. Apparently has a much quicker advance curve, and since I can't get rebuild distributors I figured it was worth the $40 to have spare parts. Between these two, I should be able to get the timing correct, then its onto rebuilding the carb's.
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| Lightly used full distributor, D612-53 (22100 E3101) |
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