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04-22-2014, 07:22 AM | #1 |
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New distributor (corrosion)
12 month ago, i installed a new-type-distributor
(with some grease) into my new engine . Due to some reason, i took it out in between (10 Month ago) and it looked good back than. I put (3 times) oil into the oil-fitting since than. Friday i heard some strange noises while driving and back home, i detected the distributor as "noisy" and i had some fun to get it out of the head. Never saw such an amount of rotten junk.... Bearings are gone for sure Points open barely.... What was wrong there??? Thank you for your suggestions Christoph I put in my spare distributor (80years plus) again which does fine.... |
04-22-2014, 07:35 AM | #2 |
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Re: New distributor (corrosion)
Short trips send the condensation to the coolest part of the engine, which is the rust in your picture. I would use a heavy dose of grease on the distributor shaft in the valve chamber, and use anti-seize on the part that slips into the head.
Try to make trips of 45 minutes or longer, so all parts of the engine are well heated to cook off condensation. The oil tube on the distributor should be filled every 500 miles. |
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04-22-2014, 07:42 AM | #3 |
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Re: New distributor (corrosion)
A small internal coolant leak could increase the moisture content ,and or short running time without getting the entire engine to operating temp (thermostat helps with this) long enough to evaporate condensation .
When you oil the dist do you just put in a few drops, or do you follow the owners instruction book and fill the oiler till it is full ---I interpet that to mean give the oil gun a good squirt into the fitting so the upper bushing gets lubed. Another factor is something Ford warned us about in the service bulletins --- GYP parts ---modern low cost manufacturing doesn't seem to be able to match Fords production tolerances or materials |
04-22-2014, 10:22 AM | #4 |
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Re: New distributor (corrosion)
What Tom said. Years ago I lived in a very small and isolated town in which most driving was less than five minutes so an engine never was truly brought up even close to operating temp. Sludge and condensation built up so rapidly that valve springs would rust and break and when the cover was removed the chamber was so packed with sludge that the engine parts could not be seen. Longer drives to allow the engine and the oil to attain operating temp for (just a guess) at least 30 minutes is the answer to that problem.
Chet |
04-22-2014, 10:26 AM | #5 | |
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Re: New distributor (corrosion)
Quote:
Chet |
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04-22-2014, 10:37 AM | #6 |
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Re: New distributor (corrosion)
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04-22-2014, 10:41 AM | #7 |
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Re: New distributor (corrosion)
Thermostats are our friends.
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04-22-2014, 10:45 AM | #8 |
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Re: New distributor (corrosion)
The only problem I see is the steel sleeve is rusted from condensation. Does not mean the bushings are shot. Wire wheel the sleeve and lower shaft, put some grease on it and go. You might want to also check for a head gasket leak in that area. Take off the valve cover and see what the inside looks like.
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04-22-2014, 01:34 PM | #9 | |
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Re: New distributor (corrosion)
Quote:
Chet |
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04-22-2014, 03:51 PM | #10 |
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Re: New distributor (corrosion)
Thank you so much for your suggestions !
I really appreciate that. FordBarn rules. I guess it is as Tom and Kurt said. I will use lots of grease, do longer turns and will hate low-quality-parts. I do not have water in the oil. I had the valve cover off about 3 weeks ago and i looks all good there no rust, no sludge ..... perfect Ah - ja - the bearings in the distributor are gone - im VERY SURE the points still must have opened, as the engine still was running, but i couldnt spot that anymore - which is: "A"-miracle to me. If there is corrosion, i would have thought that the lower parts of the housing should have grown solid to the head . But instead it is, that just the drive of the shaft did corrode. Thank you again Christoph btw Is it easy to change the bearings and the shaft of a distributor ? (repair-sets are available) |
04-22-2014, 04:08 PM | #11 |
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Re: New distributor (corrosion)
I have the same problem with the rust but I have a crack that ran to the dist. mounting hole that was brazed up years ago by a former owner,I suspect I still get a small leak which helps the rust build up. I never had a problem with the bearings in the dist. wearing though.
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04-22-2014, 04:23 PM | #12 |
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Re: New distributor (corrosion)
Can you wobble the shaft side to side at either the top or bottom? If not, the bushings are fine as I would expect.
The point rubbing block will wear down over time requiring readjustment periodically. The cam and rubbing block should be lightly smeared with distributor cam lube. Vasoline is a so-so substitute.
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04-22-2014, 07:23 PM | #13 |
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Re: New distributor (corrosion)
As mentioned above ... short trips, cold, and humid weather make this problem worse ... no time for vapor to evaporate.
Henry Ford was thinking about this problem 83 years ago. Engineers added a notch in the Model B distributor housing to vent the water vapor. Notice cut at top of round part of housing in the upper part of the housing to allow vapor to escape. If I remember correctly this was done in 1930 or 1931 but maybe not until 32. See attachment of a Model B distributor housing. FS Ignitions sells a stainless steel intermediate shaft which will help. I wonder if someone makes a stainless collar also? Left click photo to enlarge: Last edited by Benson; 04-24-2014 at 02:18 PM. Reason: Blue is edited |
04-22-2014, 08:12 PM | #14 | |
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Re: New distributor (corrosion)
Quote:
Chet |
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04-22-2014, 11:18 PM | #15 |
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Re: New distributor (corrosion)
A good file will do the same job, no need for a mill. It was changed in late 31.
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04-23-2014, 08:05 AM | #16 |
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Re: New distributor (corrosion)
Also to consider on subject of driving out moisture.
45 minutes of idling (causes more moisture than anything) and is not the same as 45 minutes of driving. |
04-23-2014, 04:16 PM | #17 |
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Re: New distributor (corrosion)
@Marco
the original old distributor turns smooth. This one turns rough and .... Ja- Shaft on bottom side does wobble sideways An the wobble is not equal while turning the shaft. I will have to demount that part to learn why this is so uneven... @Benson Thank you. Interesting fact. I will try to "tune" this distributor Thank you all for your suggestions and ideas I really appreceate that! |
04-24-2014, 10:36 AM | #18 |
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Re: New distributor (corrosion)
I might add, parenthetically, that when I rebuilt my distributor, I just happen to stick a drift into the oiler hole and imagine my surprise when a wad of junk popped out the other end.
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