Coil grounding - RX8Club.com

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Coil grounding

Old 11-05-2018, 12:45 PM
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Coil grounding

Hi,Iíve searched and searched but Iíve been unable to find any suggestions on where to ground the stock coils.I have a 2007 MT RX8 with 3000 miles on a reman motor.Any suggestions would be appreciated,thanks
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Old 11-05-2018, 01:16 PM
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Based on the wiring diagram (page 10, http://foxed.ca/rx7manual/manuals/RX...Electrical.pdf) the OEM coils are grounded through the wire harness. The mounting boss on the coils is not connected to coil ground.

If you want to run a new ground for the coils, you'll have to modify the wiring harness or create an adapter. If you do this, you can combine the ground wires into a ring terminal and mount it to the unused threaded hole above the spark plugs on the front housing (the same hole on the rear housing should hold the knock sensor).
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Old 11-10-2018, 06:39 PM
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Coil grounding

Thanks for the responses.I think when the weather warms up Iíll get a Bennet coil set up that has a grounding wire with it.A side note-I sanded all the grounding sites I could find and applied a grounding set from Flex Innovations in black.There is a noticeable difference in idle,startups and general drive ability.No idle dips with air conditioning cycling.2007 RX8 MT Black,Revi,Borla.
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