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!

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

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..

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.

yeah dizzy is fine. jeffs mod is good too!

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.. https://www.nopistons.com/forums/pub...1047683561.gif

told ya https://www.nopistons.com/forums/pub...1047683473.gif

Oh yeah and should I use vacuum advance or not?

Yes, use the vacuum advance

>>How much stronger is the FC factory ECU controlled ingnition over a stock dizzy setup?



A lot (~2 times or so)