1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

no distributer???

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Old Jun 20, 2002 | 06:21 PM
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rx-7 crazy's Avatar
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From: newport news, VA
no distributer???

i was looking under the hood of a fc and it had no distributer...i've already grabbed two leading coils from a fc for a home made direct fire and i was wondering would it be a good idea to grab the trailing coil also or just use the leading side of my distributer and keep the distributer attached???
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Old Jun 20, 2002 | 08:22 PM
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I am not reading you. FCs have ONE leading coil (couble ended) and TWO trailing coils (single ended). The leading plugs fire in waste-spark, which is hwy they have a single double-ended coil, and the trailing plugs fire independently, which is why they have two individual single-ended coils.
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Old Jun 20, 2002 | 09:14 PM
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From: newport news, VA
Originally posted by peejay
I am not reading you. FCs have ONE leading coil (couble ended) and TWO trailing coils (single ended). The leading plugs fire in waste-spark, which is hwy they have a single double-ended coil, and the trailing plugs fire independently, which is why they have two individual single-ended coils.
ok i got a semi custom setup... the two leading coils were a suggestion so that the spark would burn hotter at each plug( 1 coil sending out to 1 plug instead of two). each of the leading sparks would get the full 6 volts from its own coil, where as if they shared a coil (stock setup) they'd get 3 volts each....it helps at higher rpm's. as for the trailing your right they each have there own coil (but they are mounted together) which is why i refered to it as "trailing coil" sorry bout that
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Old Jun 21, 2002 | 05:57 AM
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The thing is, if you want to use those trailing coils on the trailing plugs, you need to figure out a way to alternate the signal coming from the distributor

The FC only uses the crank angle sensor to know where the E-shaft is... the computer controls when the coils fire. (As opposed to the dizzy setup, where the pickus control when the coils fire)
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Old Jun 21, 2002 | 11:07 AM
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From: newport news, VA
i got an electrican and a mazda breakdown manual lets see what i can do.
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Old Jun 21, 2002 | 02:46 PM
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The problem with doing FC coil and cas in a FB is the fact that the CAS tells the ECU when to fire the coils, you will need an ECU to relate the signals to the coil packs, its not a simple run wire to the coil packs type of thing. I asked mazdatrix once and he said dont try it, you will spend your remaining days in a padded cell. Besides why not just do a direct fire setup with a dizzy its cheaper and easier, or do a MSD box
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Old Jun 21, 2002 | 02:51 PM
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too much trouble for what its worht to try and do a fc ignition setup, a msd 6al and some blasters will make it fire hotter than the fc coils.
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Old Jun 22, 2002 | 06:53 AM
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From: newport news, VA
the dizzy it is
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Old Jun 22, 2002 | 12:36 PM
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From: Mobile,AL
Originally posted by MIKE-P-28
The problem with doing FC coil and cas in a FB is the fact that the CAS tells the ECU when to fire the coils, you will need an ECU to relate the signals to the coil packs, its not a simple run wire to the coil packs type of thing. I asked mazdatrix once and he said dont try it, you will spend your remaining days in a padded cell. Besides why not just do a direct fire setup with a dizzy its cheaper and easier, or do a MSD box
My buddy (puaka on here) is useing FC coil packs on his 1st gen. He has it wired up with an MSD using it for direct fire just like on YAWS website.

Mike
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Old Jun 22, 2002 | 02:22 PM
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From: CA
Originally posted by MIKE-P-28
The problem with doing FC coil and cas in a FB is the fact that the CAS tells the ECU when to fire the coils, you will need an ECU to relate the signals to the coil packs, its not a simple run wire to the coil packs type of thing. I asked mazdatrix once and he said dont try it, you will spend your remaining days in a padded cell. Besides why not just do a direct fire setup with a dizzy its cheaper and easier, or do a MSD box

whats the adress for that site that explains how to set that up?
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Old Jun 22, 2002 | 02:41 PM
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From: 3OH5
Originally posted by Pedestrian X



whats the adress for that site that explains how to set that up?
YAW POWER
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Old Jun 24, 2002 | 09:22 AM
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Yeah, I'm using the FC leading coil which was actually recommended over the blaster coils by Paul Yaw. I think he did some testing and said that the FC coil was just as hot or hotter than two blaster coils. Plus it's cheaper. Anyway, I'm using it with the MSD 6A and it rules! Especially with the side fire plugs that are also recommended on paul's site. I hope it works out. If you can't find the info directly on paul's site, put "/ignition.html" (without the quotes) after the original URL. Have fun!

Last edited by puaka; Jun 24, 2002 at 09:40 AM.
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