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MSD Magnetic pick up distributors
I have two ERA Cobras, both with Shelby 427 aluminum blocks and MSD billet distributors with magnetic pick ups and centrifical advance. I find in both cars that virtually everything under the distributor cap rusts excessively in a very short two year period of time. On one occasion there was so much rust on the magnetic pick up that the engine started to missfire. When I replaced the magnetic pick up, distributor cap and rotor, which were also excessively coroded, the problem stopped. Advancemechanism, springs and shaft even rust. So as a matter of routine maintenance now every two years I replace the magnetic pick up, cap and rotor, clean and blow out the distributor and replace the rusted advance springs. Both cars are driven less then 500 miles a year. Needless to say I am really unhappy with MSD and wondered if anyone has a solution to this problem?
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Humidity.....moisture.....water......thats your problem.
MSD builds a quality product but moisture will ruin just about anything. water dispersant-40 (WD-40) sprayed on the inside of the cap and in on top of the dist. should help or stop the problem and also i've been told that 2 small holes drilled in the cap will help this problem........... BUT i have never tried that one........ |
my pick-up has also rusted, but there have been zero ignition problems. Now going on 8 years on the same MSD distributor & it's parts. I have changed the cap and rotor once though.
Z. Ray |
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Rodger |
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the new msd caps have a vent built in. Z. |
there you go, problem solved.
living in the rust belt of america WD-40 has become a friend of mine. |
I like to change the cap yearly as a matter of practice. A couple of weeks ago I was doing some investigation for what I thought was a carburetor problem (Webers) but the symptoms turned out to be the advance weights binding and sticking on the pivot pins (light springs). I cleaned and replaced the weights & springs and all is well. I've had the MSD Pro Billet distributor for about 10 years now and really never had given the working internals much thought previously, as I am for the most part in a dry weather climate without a lot of humidity. However, the magnet was pretty rusty (surface) but to date has not cause any reliability issues. I will probably replace the pickup and reluctor this Winter.
MSD's products are well engineered. |
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