kully 560 Posted April 22, 2017 Share #1 Posted April 22, 2017 I ordered the wrong distributor cap! the one I have now is for a 1977 280z and the distributor cap needed is for a 1980 280zx distributor. the 280z fits fine tight no wobble and ignition timing has not changed . does anybody know the difference between the 2 cap as they have different part #s. was ordering plugs for the 1977 and did not change the year for the distributor cap and rotor. Link to comment Share on other sites More sharing options...
Reptoid Overlords Posted April 22, 2017 Share #2 Posted April 22, 2017 Link to comment Share on other sites More sharing options...
siteunseen Posted April 22, 2017 Share #3 Posted April 22, 2017 (edited) The ZX cap is bigger than a Z's. Also the spark plug gap is wider too. Edited April 22, 2017 by siteunseen Link to comment Share on other sites More sharing options...
Reptoid Overlords Posted April 22, 2017 Share #4 Posted April 22, 2017 What I meant to post before my phone nuked itself was the question of the built in resistor plugs optional for ZX's. Not sure if the S30 runs them and if there's any differences with the cap because of it. Link to comment Share on other sites More sharing options...
siteunseen Posted April 22, 2017 Share #5 Posted April 22, 2017 I personally run the ngk bp6es copper plugs like the originals, just widen the gap. Its something like .38 to .44 for the ZX. They're not stocking them anymore and reccomend a hotter bp5es I think. I read it's a result of the new blend of gasoline & ethanol. Don't know for sure though, read on the www.com. Ngk has a neat plug finder on there web page, try that. Link to comment Share on other sites More sharing options...
Zed Head Posted April 22, 2017 Share #6 Posted April 22, 2017 How does the inside of the cap look? If it's clean and the electrodes aren't corroded it's probably fine for a few more miles. Just realized that I've been running resistor plugs with resistor wires. Not sure what the effects are, I haven't noticed any. Research needed. But it's a reason to mess around a little more. The plugs are new, but the wires old. But I don't think you can get non-resistor wires any more. Dilemma. Link to comment Share on other sites More sharing options...
kully 560 Posted April 22, 2017 Author Share #7 Posted April 22, 2017 (edited) I made the mistake and ordered the 1977 280z cap and rotor instead of the 1980 zx cap and rotor from rock auto. the cap and rotor fits tight no play seems to fit like it belongs there and car runs great just seems fine. I would just do not know what the difference is being beck arnley has a different part # for the 1980 zx dissy Edited April 22, 2017 by kully 560 Link to comment Share on other sites More sharing options...
Zed Head Posted April 22, 2017 Share #8 Posted April 22, 2017 Did you post this same question on Hybridz? Are you sure the distributors are different? You're posting years but not mentioning the matchbox ignition module. Does one have the E12-80 and one not? 1 Link to comment Share on other sites More sharing options...
siteunseen Posted April 22, 2017 Share #9 Posted April 22, 2017 My '77 cap is way smaller than my zx cap. Are you sure you have a zx distributor? Link to comment Share on other sites More sharing options...
rcb280z Posted April 22, 2017 Share #10 Posted April 22, 2017 (edited) The zx cap is taller. IIRC Edited April 22, 2017 by rcb280z 1 Link to comment Share on other sites More sharing options...
kully 560 Posted April 22, 2017 Author Share #11 Posted April 22, 2017 yes it is a zx distributor #d6k8-22 has very high vacuum advance that's why I run it with vacuum advance plugged up and have my timing advanced to 36 degrees all in! Link to comment Share on other sites More sharing options...
siteunseen Posted April 22, 2017 Share #12 Posted April 22, 2017 Not trying to be d*** but my '77 cap will not fit my ZX distributor. It's a good bit shorter and I'm unable to to clip the side hold downs on. But if you have the '77 cap and rotor I guess they will work together, if your car runs, I can't argue with that. I apologize for doubting you. Cliff The ZX has the blue plug wires attached in these photos Link to comment Share on other sites More sharing options...
zKars
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