i was at a drift event a couple weeks ago and the falken rx7 was using 4 coils from an LS1. the LS1 coils have ignitors built into them and i believe produce better spark than an amplifier like an MSD box. with these coils they said they were able to raise the boost on the GT35R they are running and not get ignition breakup and gained 60HP with new tuning. just wondering if anyone has tried this? i just purchased these coils and will be trying them on my T61 hopefully sometime soon.

 

why 4 coils? i dont think you need the extra because the trailings dont require that much spark. Correct me if im wrong

 

My car has four Jacobs -C-4 coils with the newer and working AEM four channel C2 DI amp. The coils are good for 65000 volts .Better starting and idle ,no high end break up .

 

how much did that set up cost you? i need something like that

 

dont know how much they need but i'm sure it cant hurt to have too much unless it messes up the plugs faster. i dont know really but after talking to the mechanic there he said he has been dealing with rotaries for 10-15 years and he said he loves these LS1 coils.

 

lurker out of his shell......intrested in this topic......looking for more answers from kuroi FD'question

 

what's the ratio of the stock coils?

you mentioned that they were able to raise the boost...what were they running before and what are they running now?

I've got the new aem box too and at 15 psi on a 35r I'm good to go. That 535v to the primary, that's where the winding question stems from. If my math is good, you're only cranking out ~45k volts with the C4 coils.

 

The Jacobs paper reads that they are good for over 12000 rpm while delivering over 65000 volts to the plugs. I guess they are dumb or liers ,So I will remove them and find something better .Thanks for the info I will be calling them and asking for my money back .They should know better than to not state the true facts .

 

kill jacobs david!!!!!! kill them all!!!!!

 

I will kill them but I must say the the spark from the other 45000 volt coils was not near as full , bright purple as the c-4 coils and the tester showes the c-4 to be hotter .All the work installing those four big coils for nothing . What a wast of time and money .

 

So that's what they can handle. To get that output with those windings, you'd need a primary voltage of ~765v. It's not that it's false advertising, it's you'd need a stronger amp.

I'm on the stock coils and 9 plugs and wasn't able to run 15 pounds without an amp. I have no idea what the ratio is of the stockers, so I have no idea what I'm outputting. Anyone know?

 

you would run 4 coils because the trailing plugs each need a seperate spark event, like stock. a seperate coil for each leading is better than the waste spark set up that is stock.