[sen2two]

im looking to use four ls1 coils, you can get all four for about 50-100 bucks.

i have seen it done a few times before. but are they better than the stock FC coils?

they will be used on a renesis, but i will be using the 86-91 CAS for ignition.

anyone know how to wire these in, or if its even better?

[j9fd3s]

what ecu are you going to use?

on a rotary the ls1 coils fire twice as much as on a piston engine (once in 360 degrees, instead of once every 720) this is kinda bad

fc coils might be a better choice, just for that reason.

[sen2two]

im going to use a megasquirt...

so basically they could wear out faster, or over work themselves and give bad spark?

[j9fd3s]

at high rpm the rotary has half the time to charge the coil as a v8 does. plus its firing twice as much, so it'll be hotter than the v8

they do work, but long term the fc coils would prolly be better

[ColinRX7]

You can use FC coils with a megasquirt.

What Mike is saying is, vette coils on an FC is going to be 200% duty cycle. Obviously vette coils should be used at 100% duty cycle, not 200%. In contrast, FC coils on a vette would be 50% duty cycle. FC coils on an FC is 100% cycle. Better mod would be FC coils on the vette.

Weren't FD guys stalking FC parts for sale to get FC coils on their FD? FC coils were pretty awesome, I thought.

[sen2two]

well, since i already have an extra leading coil. i'll just pick up a trailing one and go with that...

thanks...

[RX7 13B 4 UR AZZ]

4 Trailing coils with a good + wire should give you all the spark you need. I used them in a S4 TII with the Microtech and the spark intensity was intense.