240fox Posted March 7, 2012 Share Posted March 7, 2012 Hi all. im swapping an 77" l28e into my 73" and have everything but an igntion relay, andi can't find one anywhere. Is there a way to wire this up without using an ignition relay or do i even need it. Is there be existing support already in my 240z that i can wire to and bypass this relay. anyone who has experience with this swap or who has some good advice would be greatly appreciated. Thanks. Quote Link to comment Share on other sites More sharing options...
Zark Posted March 7, 2012 Share Posted March 7, 2012 I have a 72 240z that I recently replace the original dizzy with a dizzy from a 83 280zx that I got at a u-pick yard yard for $60. I took it all apart and cleaned it up, it was in great shape except for one thing. I had to make a new bearing for the breaker plate assembly, the plastic cage that holds the three ball bearings is commonly busted. I used the 4-pin HEI ignition control module. I got two modules from the local auto parts store, a Standard for $22 and a Pertronix D2000 for $46. So far I am not sure if there is much difference in performance between the two, I need to make a series of timed runs with each. It is very simple to change them out. Overall I am very happy with the 280zx dizzy/HEI combination. It makes a great difference in acceleration and the engine runs smoothly up to 6,000 rpm. That is as far as I have taken it so far. Attached is a drawing with notes. Be sure you replace the coil with one that has a low resistance. I am using a Pertronix Flamethrower III coil. I did a lot of research before making this change and some of the best info I found was on Chevy hot rod sites that discussed replacing points with an HEI distributor. I also have a 1970 Toyota FJ55 Land Cruiser which has an engine that is a metric version of the Chevy 250 straight six. It makes a very big difference putting in the HEI distributor. Distributor conversion drawin....pdf Quote Link to comment Share on other sites More sharing options...
240fox Posted March 8, 2012 Author Share Posted March 8, 2012 the guy i got my 240z from installed an electronic pertronix ignition system with no points on the l24 that was in the car. I plan on leaving that in there and wiring it up to the l28e. Quote Link to comment Share on other sites More sharing options...
240fox Posted March 8, 2012 Author Share Posted March 8, 2012 I got everything i need form cygnus except an ignition relay. thanks Quote Link to comment Share on other sites More sharing options...
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