Best ignition Harness/plugs

[Jim Herpst]

If running with cowl bumps what harness and spark plugs with Bendix sl4n-21mags (C-85)work best? Also does one need an elbow set up or will they clear straight in with the bumps(doubtful!!) (I would think definitely an elbow .... however what harness plug combo?

[3Dreaming]

On the C-90 clip wing I did we did small bumps with a Slick harness. I also shortened the center part of the lead nut. The leads are fairly flexible. And will flex and bend in less distance that any solid elbow.

[Jim Herpst]

Thanks What plugs ....short, ?

[3Dreaming]

Thanks What plugs ....short, ?

UREM38BY, they provided the shortest height for any of the new shielded spark plugs. If your bumps are high enough you can use (U)REM40E plugs. For a while Champion had spark plug resistance issues, but they may have that taken care of now. I have been using Autolite, and now Tempest since the Champion issue.

[Jim Herpst]

Autolite..heck I m still assimilating that with Ford...

[astjp2]

UREM38BY, they provided the shortest height for any of the new shielded spark plugs. If your bumps are high enough you can use (U)REM40E plugs. For a while Champion had spark plug resistance issues, but they may have that taken care of now. I have been using Autolite, and now Tempest since the Champion issue.

Its fixed, they actually took care of it about 2016...from what I read on the different discussions on the web. tim