Are you changing your ignition system from regular mags (with impulse couplers) to P-Mags? You’ll probably find that the studs installed on your engine are WAY too long—you’ll be removing the impulse coupler spacer, and that’s about an inch thick. Fortunately, E-MAG Ignitions, (maker of P-Mags) has the right (shorter) studs available. They simply need to replace the longer ones.
Removing studs that have been in the engine for a long time can be challenging. Sometimes they’re so thoroughly stuck that double-nutting won’t work, even with heat. This is when a quality stud puller is worth its weight in gold, and you can find them online for as little as $20. Here’s the step-by-step:
Step-by-step Procedure:
- Remove the mag and spacer. You’ll see these long studs in the accessory case.
- Install your stud puller onto the stud.
- More leverage is good! The stud puller will self-tighten, and the stud will come loose.
- When installing new studs, be sure to apply thread sealant (we use Permatex #3 Aviation sealant), as the holes go completely through the accessory case, potentially causing oil seepage up the stud.
- Double-nut the stud and screw it in to the correct depth—measure the thickness needed for the hold-down clamps and add a little extra.
You should now have studs of the correct length for your new electronic ignition!
A precautionary quote
Every twenty-minute job is one broken-bolt away-from becoming a three-day ordeal.” –unknown [on a sign]