2nd gen coils in 1st gen
10-21-06, 08:56 AM
#2
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it can but you must either convert your leading coils to gsl-se addict's "Transistor Trick" ignition conversion kit and use the second gen leading coil OR MSD to leading coil. Currently there is no way to use the trailing coils UNLESS you convert you're whole wiring harness/fuel system to 2nd gen or use aftermarket engine management system. In any case, it makes a big difference.
10-21-06, 10:21 AM
#3
Yeah, leave the stock trailing and get a 2nd Gen leading coil. You *can* run it without the "Transistor Trick" box, but it doesn't work nearly as well. Remember though, once you change from capacitive discharge to direct fire, you'll have to change spark plugs in the leading. Some of the second gen guys have had good luck with NGK BR8EIX, even though they're not specifically made for our cars (they're Iridium plugs made for a certain kind of motorbike IIRC). Other than that, just use stock 2nd gen leading plugs.
Jon
Jon
10-21-06, 11:35 AM
#4
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It's possible. Not sure exactly what else is needed from the 2nd gen to make it happen thou. The car I recently bought is an 88 with a 12A. Having troubles keeping it running thou. It dies out after a minute. Apparenlty it ran fine in the past, just need to find the problem.
10-21-06, 11:52 AM
#6
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Nope you heard right. I believe the last owner cooked the engine and had to settle for a 12A due to not being able to find any good 13Bs at the time for a reasonable price. It's got the 12A carb, choke and fuel pump.
10-21-06, 12:06 PM
#7
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Originally Posted by vipernicus42
Yeah, leave the stock trailing and get a 2nd Gen leading coil. You *can* run it without the "Transistor Trick" box, but it doesn't work nearly as well. Remember though, once you change from capacitive discharge to direct fire, you'll have to change spark plugs in the leading. Some of the second gen guys have had good luck with NGK BR8EIX, even though they're not specifically made for our cars (they're Iridium plugs made for a certain kind of motorbike IIRC). Other than that, just use stock 2nd gen leading plugs.
Jon
Jon
Last edited by StealthGXL; 10-21-06 at 12:10 PM.
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10-21-06, 12:36 PM
#8
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So far I've had better results using the 1st gen Nippon Denso plugs than the 2nd gen plugs. However once I get it to stay running for longer than a minute it may be a different story.
10-21-06, 12:36 PM
#9
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Using the 2nd gen coil without the TT is still an upgrade over stock. This is what I am currently running until we get the heating issues with the TT sorted out. Use the leading coil pack, but leave all of the ignitor wiring intact (just unbolt the wires from the terminals on the coil). Take the + and - wires from the stock leading coil and move them over to the new coil. Install the plug wires directly from the coil pack to the spark plugs. Works great. You can do this with the stock spark plugs, but the plugs from the 2nd gen will work a little better with this system. Try it, you'll like it! 
10-22-06, 10:26 AM
#14
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No, the transistor trick is a system designed by GSL-SE Addict (very large thread always floating around on the top two pages or so of this forum). This basically translates the signal between the 1st gen ignitor and the 2nd gen ignitor. Being able to utilize the 2nd gen ignitor makes for a tremendous improvement in ignition performance. Unfortunately, there are still a couple of bugs to be worked out, but I believe that he is just about ready to release the new and improved version. Until then, just use the 2nd gen coil without the ignitor. If you just disconnect the wiring between the 2nd gen coil/ignitor, then when you upgrade to the TT unit then you will be able to use what you already have. Just don't cut any wires on it when you do the install.
10-22-06, 11:41 AM
#17
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Originally Posted by aussiesmg
I also did the 2GCDFIS upgrade best $10 I ever spent, 5 mpg improvement, better smoother running and easy to install, just search under 2GCDFIS.....
10-22-06, 01:21 PM
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Originally Posted by aussiesmg
I also did the 2GCDFIS upgrade best $10 I ever spent, 5 mpg improvement, better smoother running and easy to install, just search under 2GCDFIS.....
10-22-06, 03:21 PM
#19
We are still working on the TT. There was a delay getting the 2nd gen coil from France to here and I didn't have time to test. I just rebuilt my engine, so my car has been down. My 7 will be picked up in a couple days to ship from Oregon to Virginia. It will take 2 weeks to get there. I can test at that time. I sent my 2nd gen coil to Paul in Australia since he needed one and I wouldn't be able to drive my 7 for awhile. I am going to be picking up another coil pack and trying some different ballast resistor once I get to VA.
10-22-06, 03:31 PM
#20
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Originally Posted by MtotheIKEo
I just did it yesterday and it does seem to run smoother. Did you use different plug wires when you did it? It seems like my stock wires wont stay all the way plugged into the 2nd gen coil.
10-23-06, 12:57 AM
#23
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DO the FC coils use a different end on the plug wire than the FB distributor cap? Because my wires dont seem like they are on good, and even bordering on falling off.
Edit: Didnt realize I just posted this a little bit up the page.
Edit: Didnt realize I just posted this a little bit up the page.
Last edited by MtotheIKEo; 10-23-06 at 01:00 AM.
10-23-06, 02:32 AM
#24
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lol, did you read my response a little bit up the page too? Try to push the covers up further on the wire so that the end will extend down into the coil all the way.
Try to push the covers up further on the wire so that the end will extend down into the coil all the way.
10-23-06, 08:36 AM
#25
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Just for everyones info, I have setup a small site with the information on the TransistorTrick modification. http://rx7.pw.cx/transistor_trick/index.htm
Note that there are heating issues as Kent pointed out, we are working to resolve these Kentetsu had a good suggestion on the first page of just using the coil part of the 2nd gen coilpack and wiring into the stock setup. I would go for that until the TT has matured to the next level (although I continue to run the TT :P)
Note that there are heating issues as Kent pointed out, we are working to resolve these
Kentetsu had a good suggestion on the first page of just using the coil part of the 2nd gen coilpack and wiring into the stock setup. I would go for that until the TT has matured to the next level (although I continue to run the TT :P)