Lighter = Faster (N/A build thread #2)

infernosg · 06-23-2017, 07:00 AM

I think I've often complained how much I didn't like my original ignition coil mounting location (behind the driver's headlight). I'd been toying with the idea of moving the coils to the top of the engine, and even went as far as making a temporary mount out of ABS to see if it would work. I finally decided to transfer the concept over to .060" aluminum:

My intake really has made life difficult. If it weren't for this thing I'd still have a top-mounted alternator and I've have more room for the coils. They're about 1/8" from the bottom of the filters.

Add some custom Magnecor wires and that's all:

I'm nearly done with the sub-harness for the reverse lights and oxygen sensors. After that I'll mount the radiator shroud and fan. Then, it's done, I guess. My engine harness isn't ideal, but that's getting resolved later in the Summer. But really, the only thing preventing me from getting it started is my lack of knowledge/confidence to set up a base tune.

Pete_89T2 · 06-23-2017, 07:57 AM

I have the same set of coils on my FC. I managed to mount all 4 of them in the space vacated by the stock trailing coils, and even repurposed the lower stock coil mounting bracket & upper stud mount in my design. I'll post up pictures later (don't have them on my work computer).

Anyway, I fabricated up some simple AL brackets, and using a combo of long bolts, AL spacers and strategic stacking of the coils in a 2X2 configuration, and a bend on the top bracket (to line up with the top stud), it all in fits neatly there.

06-23-2017, 07:00 AM	#1
infernosg IT'S ALIVE! Join Date: Dec 2009 Location: Richmond, VA Posts: 811 Rep Power: 16	I think I've often complained how much I didn't like my original ignition coil mounting location (behind the driver's headlight). I'd been toying with the idea of moving the coils to the top of the engine, and even went as far as making a temporary mount out of ABS to see if it would work. I finally decided to transfer the concept over to .060" aluminum: My intake really has made life difficult. If it weren't for this thing I'd still have a top-mounted alternator and I've have more room for the coils. They're about 1/8" from the bottom of the filters. Add some custom Magnecor wires and that's all: I'm nearly done with the sub-harness for the reverse lights and oxygen sensors. After that I'll mount the radiator shroud and fan. Then, it's done, I guess. My engine harness isn't ideal, but that's getting resolved later in the Summer. But really, the only thing preventing me from getting it started is my lack of knowledge/confidence to set up a base tune. __________________ '86 Mazda RX-7 Base '79 Mazda RX-7 GS Last edited by infernosg; 06-29-2017 at 09:02 AM.

06-23-2017, 07:57 AM	#2
Pete_89T2 Lifetime Rotorhead Join Date: Apr 2010 Location: Elkton, MD Posts: 874 Rep Power: 16	I have the same set of coils on my FC. I managed to mount all 4 of them in the space vacated by the stock trailing coils, and even repurposed the lower stock coil mounting bracket & upper stud mount in my design. I'll post up pictures later (don't have them on my work computer). Anyway, I fabricated up some simple AL brackets, and using a combo of long bolts, AL spacers and strategic stacking of the coils in a 2X2 configuration, and a bend on the top bracket (to line up with the top stud), it all in fits neatly there.