r35 Coil Draw

Helping a friend by building a designing a harness for his r32GTR with a Nexus r3 VCU using sequential ignition.

He plans to run r35 coils on his rb26 and im struggling to find any data on this coils to help design the loom to the bulkhead.

Does anyone know the current draw or coil resistance on these coils?

I know that with a 10000rpm limit (being generous) i should see about 12ms between ignition events. With a standard 14v system and a suggested dwell time of 3.2ms, im looking at about 26.66% duty cycle.

I was going to estimate high at about 20A peak draw on each coil which would give me about 5.33A of draw in which a 20awg M22759/32 is capable of handling.

Please correct me if i am wrong or help point me to where i can get information on these coils.

Since the engine likely won't be sitting near max RPM for long, 22awg is often used, but 20awg would afford you more headroom.

As always, appropriate gauge varies with operating conditions, length, voltage, wire construction/quality, and erring on the side of caution when saving weight/space isn't absolutely critical often makes sense. If you're thinking 20, stick with 20.

Would 2x 20awg in parallel for a feed be sufficient for this as well? All 6 would be spliced with the paralleled 20s and not split (1 feed per 3 coils

1 20awg per 3 coils sounds reasonable.

Hi Michael,

The information that I have for those coils shows that they have a peak current draw of just over 6amps, the dwell at 14V is closer to 2.7ms as well. The closest that I have come to having a coil pack that drew that much current was one of the genuine Mercury IGN-1A coils, and that came in at 16A at 90% of the peak saturation point. Running it out to coil saturation got it to around 17.5A, but all you are doing there is adding heat into the coil.

I really appreciate that info! i was grossly overestimating