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#1
05-30-2005, 09:20 AM
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I took the cap off my MSD distributor and this is what it looked like. Anyone ever had this before and what can I use to safely clean it out? My engine hasn't run any different. Thanks for any info.
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#2
05-30-2005, 09:20 AM
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I took the cap off my MSD distributor and this is what it looked like. Anyone ever had this before and what can I use to safely clean it out? My engine hasn't run any different. Thanks for any info.
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#3
05-30-2005, 09:23 AM
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I would replace the magnetic pick-up, I think it is part # 84661, under 20 bucks at Summit.-Jim
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#4
05-30-2005, 02:26 PM
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My MSD looked very similar. I had an ingition problem that turned out to the the coil. However, I did replace the pick up and sanded the "fins" down the best that I could. I spoke to MSD about this at O'Reily's Summer Nationals and they said this would happen over time due to the high voltage.
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GJN 1968 Firebird 400 461 3,580 LBs 3.2k Stall 3.25 1.657 - 60' 11.637 @ 115.45 http://www.youtube.com/watch?v=dEqzw...e=user&search= |
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#5
05-30-2005, 02:29 PM
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i have to park my car outside and have notice this too. I regularly have to clean it. What i did on mine that has seemed to work well, i took the distributor apart cleaned the corroded areas and masked them and painted them with zinc spray paint. The paint hasnt effected the performance that i know of. It has stopped the corrossion. Now if i could only find a way to keep the distributor cap from corroding. I have to clean the cap about every few weeks.
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72firebird 3800# 496 316cfm eheads, 11.1:1 compression, custom solid roller, victor 4500 intake port matched, 1050 dominator, continental converter flash 4400 stall. 3.73. 2 inch headers with 3.5 with x to mufflers reduced to 3 inch full exhaust. mallory 250 fuel pump, cal tracs with split monos ..Pump gas 91 octane. |
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#6
05-30-2005, 02:46 PM
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I have heard that the high voltage will create ozone (I was told that that is what causes the corrosion) inside the cap and that drill some small holes will help get rid of it. I dont know if it is true though
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#7
05-30-2005, 03:38 PM
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i had the same problem until i switched to a ford type capadapt no more corrosion issues
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#8
05-30-2005, 05:02 PM
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Mine had exactly the same problem, except mine had more of that white power which is over yours all through mine. It looked to me like the same crud you would find on the positive terminal of a battery over time.
I always disconnected my battery. After I pulled the distributor to pieces to clean. I stopped switching my battery off, left the cap as it was and the I never saw the corrosion again. I used 240grit wet and dry with a bit of WD40 to clean the reflucter & mag pickup. I was told it was mixed magnetic reaction with the trigger and the battery being switched off all the time as the negative terminal bolted to the head.
__________________
'71 Holden HQ Monaro - 3850lbs race weight, 400c/i - 11.4 @ 120 '66 Pontiac GTO - 389, 4 speed street cruiser |
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#9
05-30-2005, 07:25 PM
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Check your connectors also. Mine were covered in the white corrosion. I think the corrosion is just a nature of the beast. My pickup is a little rusty also but ohms out within tolerance. -Jim
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#10
05-30-2005, 10:12 PM
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Bret :
<<<<<< exact same here with rust ,every once in a while i have to take a sharp razor and scrape the rust of the reluctor 
__________________
 someone who thinks logically is a nice contrast to the real world.http://www.youtube.com/watch?v=3FfKVVZW1-Y |
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#11
05-30-2005, 10:36 PM
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Now _THAT_ makes me want to buy their products!
__________________
  My Daddy bought me a car but all I got was this old Pontiac.
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#12
05-30-2005, 10:45 PM
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clean it best you can then use a dremel with the polishing ends work your way in there.
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24 beer in a case. 24 Hours in a day. Coincidence? I think not. " Steve Wright" |
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#13
05-31-2005, 05:15 AM
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I agree with Diamond Jim, you should replace it. Where there was once iron, there is now rust, iron oxide, so the magnetic properties have changed. Since the magnetic trigger uses a magnetic field for triggering, you could have false triggering or no triggering.
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#14
05-31-2005, 04:35 PM
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Bret- replace the pick-up and get some CLEAR Glyptol insulation paint and paint the new one. It will not affect it and will keep it from rusting. This is the same paint that armature, stators and the likes are coated with.
__________________
65 GTO, Tiger Gold, Nostalgia Super Stock 421, 2-Carter AFB carbs, Stock Suspension, 3550lbs Full Exhaust-- 9.70's@135 66 GTO (Retired race car) 421 CID Multiple NSCA/NMCA World Champion 66 GTO 389 3x2, 4 speed, 3.90 gear, Montero Red 33K original Miles 67 GTO 2dr Post, 428, Tri Power, 3.55 Gears 80 Trans Am Black SE Y84 W72 WS6 |
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#15
05-31-2005, 05:59 PM
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My Mallory dist never looked like that.
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#16
05-31-2005, 06:14 PM
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I've had my Mallory unilite for almost 20 years never had any corrosion at all.
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#17
05-31-2005, 10:21 PM
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All it takes is a little protective paint and MSD cant do that with a 380$ product?
what am I missing here? I thought MSD was supposed to be the only quality name in ignition products. LOL My 40 yr old factory distributers look better everyday. That must be from ozone buildup? Is that right? I wonder why other distributers dont rust? Plenty of bare metal in my points and hei's. There must be something about the atmosphere in the "ready to run" that promotes that corrosion.
__________________
My Daddy bought me a car but all I got was this old Pontiac.
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#18
06-01-2005, 03:29 AM
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BVR - You're telling me. I paid a small fortune to get this distributor over here....But.... I'm now ditching my whole MSD setup and going back to HEI. I want vacuum advance.
This is what mine looked like, pretty much same as above. 
__________________
'71 Holden HQ Monaro - 3850lbs race weight, 400c/i - 11.4 @ 120 '66 Pontiac GTO - 389, 4 speed street cruiser |
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