MSD Fast Distributor Button Wear - Team Camaro Tech
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post #1 of 2 (permalink) Old Mar 24th, 17, 07:13 PM Thread Starter
Join Date: Mar 2017
Location: Penna
Posts: 1
MSD Fast Distributor Button Wear

Just wondering... Anyone else experience too-fast button wear w/ MSD cap/rotor..? For a LONG time, I barely got 1000 ... maybe 2K ... before there's so much carbon in the cap, it looks like a spider web in there... I know it's going (gone!) downhill when I get crossfire-backfire tendency & hard starts.

I mainly run a 6-al in my 318 Dodge. This button-wear has been going on forever... I tried all the standard solutions. And NO, it wasn't "microfine abrasion on my rotor pick-up!" My opinion has always been that MSD uses a super-soft button INTENTIONALLY to wear out. You can talk about proper resistance etc, but save it till you finish reading lol! ... (Btw -- I also think they should sell just the conductor for the rotor separately... damn! it's even MADE to be removed/replaced ... But they want $$ and lots of it for a new rotor... C'mon ... at least give me the option.)

Anyway -- in my frustration I finally tried an experiment... and it WORKED GREAT. I also run a 350 Chevy stock motor... never had any unusual/out of the ordinary button wear. So I finally bought a Chevy HEI stock replacement button for ~2$. The conductor was just a tad bigger than the MSD, but really close. As it turns out, I think I just used a 1/4" drill to ever-so-slightly enlarge the MSD button hole (copper?) and friction-snugged the GM button into place (I may have had to coping-saw the seated-end of the GM part, too, so it didn't push too hard onto the rotor pick-up...

BINGO. That hybrid set-up ran A+ for 5 times longer at a tiny tiny fraction of the MSD-only cost. It seems the GM stock part button is maybe copper-impregnated carbon, like old tool & die electrodes are cut from? Not sure, but that was my little sucess story.

Any feedback? Anyone else ever try this?
stoneskipper is offline  
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post #2 of 2 (permalink) Old Mar 25th, 17, 04:38 AM
Senior Tech
Join Date: Jan 2011
Location: east coast
Posts: 2,288
Re: MSD Fast Distributor Button Wear

I have had the same frustrating problem for years, I am going to give your fix a try.
bigblockragtop is offline  
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