[roger1]

Thanks guys!
Scarebird, thanks for that info. I did a little more reading on the issue and about how to cross them at a right angle.
I just went out to the shop and re-routed #5 and #7.
Btw, should it be a true 90 deg right angle or is just some angle good enough? Also I wonder if today's spark plug wire designs change the magnetic field in any way to reduce the chances of inductive crossfire.

[Ben M.]

Originally Posted by roger1

Thanks guys!
Btw, should it be a true 90 deg right angle or is just some angle good enough? Also I wonder if today's spark plug wire designs change the magnetic field in any way to reduce the chances of inductive crossfire.

Just get it close enough, it doesn't have to be 100%. The field decays exponentially with distance, so just moving it 1/2" or more is a considerable drop in the ability to induce. Modern spark plug wires supposedly have better shielding with a thicker dielectric, which also helps.

You can run them semi-close, just don't leave them sitting on top of each other. Quite a few people like to argue about this, but that's just my experience working with these cars plus high voltage for a living.