Go Back   The Ford Barn > General Discussion > Model A (1928-31)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 04-22-2014, 07:22 AM   #1
Christoph
Senior Member
 
Christoph's Avatar
 
Join Date: Oct 2010
Location: Frankfurt am Main in Germany
Posts: 666
Default 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....
Attached Images
File Type: jpg ZV kompl.jpg (33.5 KB, 94 views)
File Type: jpg ZV Mitn.jpg (29.7 KB, 91 views)
Christoph is offline   Reply With Quote
Old 04-22-2014, 07:35 AM   #2
Tom Wesenberg
Senior Member
 
Tom Wesenberg's Avatar
 
Join Date: May 2010
Location: Mpls, MN
Posts: 27,363
Default 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.
Tom Wesenberg is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 04-22-2014, 07:42 AM   #3
Kurt in NJ
Senior Member
 
Kurt in NJ's Avatar
 
Join Date: May 2010
Location: on the Littlefield
Posts: 4,694
Default 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
Kurt in NJ is offline   Reply With Quote
Old 04-22-2014, 10:22 AM   #4
Growley bear
Senior Member
 
Join Date: Apr 2012
Posts: 777
Default 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
Growley bear is offline   Reply With Quote
Old 04-22-2014, 10:26 AM   #5
Growley bear
Senior Member
 
Join Date: Apr 2012
Posts: 777
Default Re: New distributor (corrosion)

Quote:
Originally Posted by Christoph View Post
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....
I would say that the 84 YO dist. is manufactured with a degree of quality of material and workmanship than most REPRO units. And yes, commonly referred to by Mr. Ford as GYP parts. A term that I grew up with as my father used it often in the Ford Garage.

Chet
Growley bear is offline   Reply With Quote
Old 04-22-2014, 10:37 AM   #6
Mitch//pa
BANNED
 
Join Date: May 2010
Location: Bucks County, PA
Posts: 11,454
Default Re: New distributor (corrosion)

installing a thermostat will help heat up the engine
Mitch//pa is offline   Reply With Quote
Old 04-22-2014, 10:41 AM   #7
Growley bear
Senior Member
 
Join Date: Apr 2012
Posts: 777
Default Re: New distributor (corrosion)

Thermostats are our friends.
Growley bear is offline   Reply With Quote
Old 04-22-2014, 10:45 AM   #8
redmodelt
Senior Member
 
redmodelt's Avatar
 
Join Date: May 2010
Location: Portland OR
Posts: 4,432
Default 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.
redmodelt is offline   Reply With Quote
Old 04-22-2014, 01:34 PM   #9
Growley bear
Senior Member
 
Join Date: Apr 2012
Posts: 777
Default Re: New distributor (corrosion)

Quote:
Originally Posted by redmodelt View Post
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.
I concur, all it takes in a very small amount of condensation, a leak that might be very difficult to spot especially at my age.

Chet
Growley bear is offline   Reply With Quote
Old 04-22-2014, 03:51 PM   #10
Christoph
Senior Member
 
Christoph's Avatar
 
Join Date: Oct 2010
Location: Frankfurt am Main in Germany
Posts: 666
Default 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)
Christoph is offline   Reply With Quote
Old 04-22-2014, 04:08 PM   #11
rocket1
Senior Member
 
Join Date: Mar 2014
Location: Midland Park,N.J.
Posts: 792
Default 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.
rocket1 is offline   Reply With Quote
Old 04-22-2014, 04:23 PM   #12
Marco Tahtaras
Senior Member
 
Marco Tahtaras's Avatar
 
Join Date: May 2010
Posts: 3,099
Default 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.
__________________
http://www.abarnyard.com/
Marco Tahtaras is offline   Reply With Quote
Old 04-22-2014, 07:23 PM   #13
Benson
Senior Member
 
Benson's Avatar
 
Join Date: May 2010
Location: Central Highlands, Cen~Col
Posts: 1,850
Default 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:
Attached Images
File Type: jpg tn_0001.jpg (44.1 KB, 40 views)
File Type: jpg tn_0002.jpg (47.3 KB, 39 views)

Last edited by Benson; 04-24-2014 at 02:18 PM. Reason: Blue is edited
Benson is offline   Reply With Quote
Old 04-22-2014, 08:12 PM   #14
Growley bear
Senior Member
 
Join Date: Apr 2012
Posts: 777
Default Re: New distributor (corrosion)

Quote:
Originally Posted by Benson View Post
As mentioned above ... short trips, cold, and humid weather make this problem worse ... no time for vapor to dissipate.

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.

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?
A person with good command of a Swiss Mill could modify the Model A distributor housing the same was as the Model B pictured. I have a B housing, and never gave it a second thought. Always room to learn, Thank You. I just may give that a try very soon.

Chet
Growley bear is offline   Reply With Quote
Old 04-22-2014, 11:18 PM   #15
redmodelt
Senior Member
 
redmodelt's Avatar
 
Join Date: May 2010
Location: Portland OR
Posts: 4,432
Default Re: New distributor (corrosion)

A good file will do the same job, no need for a mill. It was changed in late 31.
redmodelt is offline   Reply With Quote
Old 04-23-2014, 08:05 AM   #16
Benson
Senior Member
 
Benson's Avatar
 
Join Date: May 2010
Location: Central Highlands, Cen~Col
Posts: 1,850
Default 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.
Benson is offline   Reply With Quote
Old 04-23-2014, 04:16 PM   #17
Christoph
Senior Member
 
Christoph's Avatar
 
Join Date: Oct 2010
Location: Frankfurt am Main in Germany
Posts: 666
Default 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!
Christoph is offline   Reply With Quote
Old 04-24-2014, 10:36 AM   #18
ericr
Senior Member
 
ericr's Avatar
 
Join Date: Apr 2012
Posts: 1,269
Default 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.
ericr is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 04:36 AM.