RETed

YES.
ANYTHING ELECTRICAL.
That's why I made the comment about...you really should not be doing this unless we're talking about race car running carbs = ZERO electricals.

Otherwise, the EMI has the potential to **** with ANY electronics.
Remember, the coils / spark plug wires / spark plugs are firing on the order of 10's of 1,000's of volts.
We're talking anywhere from 10,000 to 50,000 volts.

Side note on the spark plug wires though the firewall...
You can use custom length spark plug wires - I think you will need it.
(I run MSD Super Conductors for a universal V8, and I get to custom length the wires. I already own an MSD crimper. I get two sets of spark plug wires for a 13B for about $50 per set when I buy the wires from Summit Racing for $90.)
One end is terminated, but the other is bare.
You can terminate the end once the spark plug wire is run through the firewall.
The bare end is the diameter of the spark plug wire - typically 7mm, 8mm, or 8.5mm.
So, you can get away with a smaller hole than 2".
The problem is that it is not recommend to bundle all your spark plug wires (and zip tie them).
There's a reason why spark plug wires come with spacer holds that keep the spark plug wires apart.
Having all your spark plug wires bundling together just to fit through a smaller hole is not a very smart idea.
Thus, running 4 spark plug wires through 4 separate holes is preferred, if you're serious about doing this.


-Ted

RacerXtreme7

iTrader: (2)

Perhaps mount them either under the brake master or were the battery is and relocate the batt. You could make covers for them like the old school hot rodders used to making the inner fenders look like one big piece and smooth?

~Mike.........

RacerXtreme7

iTrader: (2)

Here's pics of Blue TII's engine compartment (yeah.... nice!).

https://www.rx7club.com/attachment.p...8&d=1217783170

https://www.rx7club.com/attachment.p...9&d=1217783170

Notice the carbon fiber sheet he used to box in the inner fender near the windshield on the passenger side. You could do this to the driver side both near the windshield (may have to get creative due to master cyclinder) and in front of the inner fender near the head light. You could completely box it in though with a sheet on top (carbon or just plain sheet aluminum). You could also to further smooth the engine compartment and replicate this on the pass side near the light for a cold air box. Just ideas............

Also as Ted pointed out, you DON'T want spark plugs bundled. You run the risk of cross firing were your spark energy can jump from one plug wire to the other causing BAD missfire and or detonation (notice how far apart the factory kept the leading coils from the trailing?).

~Mike..............