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RX7 V8 conversion ignition and starter questions (Help out a Newb lol)
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Posted by: rx7 punk

First off ill introduce myself, I junked the rotary motor from my first car, an 88 rx7 and swapped in a 89 trans am 305/ t5 now all thats left is the wiring of the start and the ignition so far heres where im at, I tapped into my ON and my START keyed hot wires in the steering colum but their .6 volts is to ussy for my starter and ignition how could I up the power without doing damage. Im going to take the easy way out and rig up a push button from a 12v to the starter. What About the ignition? could I up the juice going to the ignition switch without overloading my acc. and frying the switch? I guess lastly I need to know how many volts im looking for at my coil, I had .6 from the mazda system would that me enough?

Thanks

My Parts
-680cfm quadrajet
-Flow tech after burner headers
-v-belt conversion lol
-MSD ignition system
-remote oil filter
-Holley fuel regulators and such
-Eaton M90 supercharger/ intercooler
-Lastly trimmed hood support ribs so the hood closes and looks stock!

Posted by: skeezix

I'd run a "switched" 12-volt source from the fuse box to power the ignition. There should be a tab on the driver's side of the distributor marked "IGN", connect your 12 volt "switched" wire there.

"switched" = 12 volts when key is on.

Good luck!

Posted by: rx7 punk

im just worried if I add the 12v to the ignition switch ill kill the accessories going from 2volts to 12volts what do you think? could I just clip the 2 volts into the switch and solder on a 12v constant?

Posted by: MikeT

Sounds like a hell of a great project! BTW how you got the m90 mounted?

Posted by: rx7 punk

I mounted it on the passanger side of the motor above the valve cover welded to a plate which mounted to the block via the stock smog crap mounting bolts, its close but the hood closes and the Blow off vavle is sexy as hell

Posted by: MikeT

ya know its kinda funny but... I had imagined basically the same thing with a first gen rx-7 running a TPI 305.

Let us know how it goes.

Posted by: rx7 punk

its going ok, the hardest part of the entire conversion is the wiring only because im making it up as I go lol

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