luseboy Posted February 10, 2014 Share Posted February 10, 2014 (edited) I've been restoring my '73 Z for the past 2 1/2 years, and have finally gotten to the point where I am close to being ready to fire it up for the first time. The engine is a f54 block with a P79 head that I partially disassembled, cleaned up, and replaced the gaskets on. The engine came with what I gather is either a euro or pre-emissions 240z dizzy with a pertronix kit already installed. I've replaced the cap and rotor, and (after 3 tries) gotten the distributor/oil pump shaft timed properly. I am currently about halfway done with re-wiring the car with an Ez-Wire kit and have started to think about what I really want to accomplish with the ignition on this car. I was originally planning on just using the pertronix with the recommended flame thrower coil and no ballast resistor (car had no engine harness when I bought it anyways), but have recently started thinking that an MSD or mallory ignition box might be a good idea, since I haven't done wiring yet anyways. I was wondering if anyone has used an MSD box or similar with pertronix, and if so, what they did about the ignition coil. I know you're supposed to have resistance going into the pertronix (hence why the flamethrower coil has built in resistance) but was wondering how important that really is. My plan was to use the Mallory Hy-fire 6A with an MSD Blaster SS coil (https://www.msdignition.com/Products/Coils/Street/Strip/8207_-_MSD_Blaster_SS_Coil.aspx) but wasn't sure if I would fry the pertronix with this set up. I have heard of people using two ignition coils with the MSD unit but have never found any concrete explanations on why this is necessary or how to wire it up, but maybe this would be the answer for me? In any case, if this will work I was also hoping I could get some advice on which plugs to use with this set up. I've already decided on magnecor wires (not that it really matters for the sake of figuring out the best set up) because after researching they seem to be the "best" out there. Hopefully that didn't sound too convoluted but I'm hoping someone has some advice for how to make this work properly, or if the ignition box is even worthwhile (though the general consensus is that it is very worthwhile, from what I have found). Thanks! -Austin Edited February 10, 2014 by luseboy Quote Link to comment Share on other sites More sharing options...
Nigel Posted February 11, 2014 Share Posted February 11, 2014 When used with an ignition box like the MSD 6AL or Mallory 6A, the Pertronix only serves as a trigger and is not responsible for handling any of the current used to drive the coil. So, don't worry about frying the Pertronix. The MSD and Pertronix is a good combination and work well together. I'm sure the Mallory is no different. Don't worry about double coils. No need for it. Magnecore wires are excellent. Standard NGK plugs will be fine. BPR6ES11's will do the trick, IIRC, but double check that part number. Nigel Quote Link to comment Share on other sites More sharing options...
luseboy Posted February 11, 2014 Author Share Posted February 11, 2014 When used with an ignition box like the MSD 6AL or Mallory 6A, the Pertronix only serves as a trigger and is not responsible for handling any of the current used to drive the coil. So, don't worry about frying the Pertronix. The MSD and Pertronix is a good combination and work well together. I'm sure the Mallory is no different. Don't worry about double coils. No need for it. Magnecore wires are excellent. Standard NGK plugs will be fine. BPR6ES11's will do the trick, IIRC, but double check that part number. Nigel Thats what I had thought but wasn't sure. Thanks very much for the reply. I was reading on pertronix's website and they show that you should use the flamethrower coil with the pertronix if using an msd box, but based off what you're saying, it really shouldn't matter which coil I use as long as it can handle the msd box, right? So the blaster SS coil should work fine, as long as I'm not missing something vital here? I know most people use the blaster 2 coil but I like the look of the blaster ss and it's basically the same thing internally. The other one I was thinking of using was the crane LX-91, not sure what the best bet between these 2 would be though. Thanks again for your help. Quote Link to comment Share on other sites More sharing options...
Nigel Posted February 11, 2014 Share Posted February 11, 2014 Don't over think which coil to get. Pertronix wants you to buy their coil, so they're not going to show a competitors product. The LX-91 is twice the price of the MSD coils, but I think it's safe to say you'll never notice any performance difference. You might as well go with whatever you like the look of at a price you're content with. Quote Link to comment Share on other sites More sharing options...
luseboy Posted February 12, 2014 Author Share Posted February 12, 2014 Don't over think which coil to get. Pertronix wants you to buy their coil, so they're not going to show a competitors product. The LX-91 is twice the price of the MSD coils, but I think it's safe to say you'll never notice any performance difference. You might as well go with whatever you like the look of at a price you're content with. Sounds like I'll go with the blaster ss then. Thanks very much for your input! Quote Link to comment Share on other sites More sharing options...
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