2nd Generation Specific 1986-1992 Discussion

Tach Signal On Stock Gauge

Old 05-15-2004, 05:15 PM
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Direct 12v setup from the trailing size? Anyone know?



I might be running a 12A dizzy and coil, so I am curious if I can set up the tach signal the same way as the FB.. But I'm not sure if it's 12v or like 5v or something.



Thanks!
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Old 05-15-2004, 06:47 PM
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the 12a is like any car with a dizzy, its just a wire on the coil (i dont know if its positive or negative side). should work with the fc just fine
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Old 05-15-2004, 06:50 PM
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I figured as much but I wasn't sure.. Thanks..



Since I would be going from the stock FC coil setup to the dizzy, should I do a mod like this (from Jeff20B's site)?:

http://www.geocities.com/cd23c/dlidfis.html



I don't want to come out of this with a weaker spark, and I know the FC ignition system is pretty strong from the production line..
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Old 05-15-2004, 06:52 PM
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This wasn't something I had anticipated but it's going to get my car running for Rotorfest, so I'll do it. I don't know what I will end up setting up on the car but for now I don't want to worry about making the MS fuel controller work with factory spark. Turned out it's a little bit more complicated than I had originally anticipated.



The guy who talked me into running the fuel setup also talked me into running the dizzy for a little while until I get something else in order.
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Old 05-15-2004, 07:31 PM
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yeah dizzy is fine. jeffs mod is good too!
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Old 05-15-2004, 11:02 PM
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How much stronger is the FC factory ECU controlled ingnition over a stock dizzy setup?



I don't know if my dizzy is from a 12A or 13B anymore. I saw this video and I don't know if the GSL-SEs had a dizzy or a few early FC3S? This just threw me a huge curve ball. Just watch the shot of the engine bay.



http://www.sleepy-fish.com/sleepy/Top_Gear...vs_924_1985.avi



I am just curious if I convert to a stock FB style ingition system if I will have to worry about weak spark or anything in comparison to the factory system. This isn't a permanent setup, but if possibly I want to drop the ignition in as-is, to run it for a bit (likely to rotorfest). I don't know if I have the time to get Jeff's mod in order..
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Old 05-15-2004, 11:08 PM
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told ya
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Old 05-16-2004, 10:48 AM
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Oh yeah and should I use vacuum advance or not?
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Old 05-16-2004, 10:55 AM
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Yes, use the vacuum advance
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Old 05-16-2004, 11:05 AM
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>>How much stronger is the FC factory ECU controlled ingnition over a stock dizzy setup?



A lot (~2 times or so)
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