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 05-01-2020, 12:19 PM   #1
oriondal
Junior Member
 
oriondal's Avatar
 
Join Date: Feb 2013
Posts: 28
Default Rear main leak part 4

After dropping the oil pan I removed the rear main bearing cap and this is what I found. Thereís a shredded seal behind the cap that canít be helping. Also, in the second picture the bearing cap thereís a couple of sleeves I didnít expect. Is this all normal?
Attached Images
File Type: jpeg E868AC4B-5415-4F75-A9B3-40ED233A3687.jpeg (93.2 KB, 210 views)
File Type: jpeg 7DB29251-8A8E-4ECD-B519-A302748AF605.jpeg (131.1 KB, 200 views)
oriondal is offline   Reply With Quote
Old 05-01-2020, 12:32 PM   #2
BRENT in 10-uh-C
Senior Member
 
BRENT in 10-uh-C's Avatar
 
Join Date: May 2010
Location: Eastern Tennessee
Posts: 10,191
Default Re: Rear main leak part 4

Define "normal". Someone has converted the bottom end to insert bearing shells. They have removed the slinger and are using a rubber seal in its place.
__________________
.

BRENT in 10-uh-C
.
www.model-a-ford.com
...(...Finally Updated!! )

.
BRENT in 10-uh-C is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 05-01-2020, 02:04 PM   #3
oriondal
Junior Member
 
oriondal's Avatar
 
Join Date: Feb 2013
Posts: 28
Default Re: Rear main leak part 4

Quote:
Originally Posted by BRENT in 10-uh-C View Post
Define "normal". Someone has converted the bottom end to insert bearing shells. They have removed the slinger and are using a rubber seal in its place.
Thanks Brent. Iíve never seen insert bearings, so I wasnít sure. Im guessing replacing the seal would help with the leak.
oriondal is offline   Reply With Quote
Old 05-01-2020, 02:57 PM   #4
BRENT in 10-uh-C
Senior Member
 
BRENT in 10-uh-C's Avatar
 
Join Date: May 2010
Location: Eastern Tennessee
Posts: 10,191
Default Re: Rear main leak part 4

Quote:
Originally Posted by oriondal View Post
Thanks Brent. Iíve never seen insert bearings, so I wasnít sure. Im guessing replacing the seal would help with the leak.
Dale, yes replacing the seal will likely help stop your leak however you need to determine what caused the seal deterioration. Was the engine stored for a long time and then started with the seal rubber dry?

I cannot tell if that is a Terry Burtz one-piece seal, but if so you will need access to the entire rear flange of the crankshaft. Also, I would want to see how they are controlling the thrust of the crankshaft. That might have been a contributing factor for the seal failure. I do know that the craftsmanship on that engine seems very rough just judging by the reliefs that were "carved" in with a cut-off grinder for the insert shell tangs.


I will close by suggesting that you be cautious of the advice you are getting over on social media. You have everything from a former lawnmower mechanic to folks who don't even own a Model-A (-much less worked on one) giving you advice.
__________________
.

BRENT in 10-uh-C
.
www.model-a-ford.com
...(...Finally Updated!! )

.
BRENT in 10-uh-C is offline   Reply With Quote
Old 05-02-2020, 11:25 AM   #5
Jim Brierley
Senior Member
 
Join Date: Jun 2010
Location: Temecula, CA
Posts: 3,564
Default Re: Rear main leak part 4

Looks to me that the old, torn, seal is a rope seal as used in most engines starting in the late 30's, it is just graphite impregnated rope. I've used it many times, it works good but doesn't last like the Burtz seal.
Jim Brierley is offline   Reply With Quote
Old 05-02-2020, 05:38 PM   #6
CWPASADENA
Senior Member
 
CWPASADENA's Avatar
 
Join Date: May 2010
Location: PASADENA, CA
Posts: 1,693
Default Re: Rear main leak part 4

Sponsored Links (Register now to hide all advertisements)
Brent,

Is this one of the inserted engines that uses the center main for thrust?

I believe H&H used the center main for thrust control with their insert conversion.

What I am seeing, I do not like the looks of.

It appears the rear seal was a molded seal of some sort and not just generic rope seal. This would definitely account for a big oil leak.

Chris W.

Last edited by CWPASADENA; 05-02-2020 at 05:40 PM. Reason: TYPO
CWPASADENA is offline   Reply With Quote
Old 05-02-2020, 06:48 PM   #7
1930artdeco
Senior Member
 
1930artdeco's Avatar
 
Join Date: May 2010
Location: Oakland, CA
Posts: 2,943
Default Re: Rear main leak part 4

I have rebuilt a grand total one one engine-mine and I don't like what they did there. The main cap has two 'half shells' that are not even letting oil get to the whole bearing surface. Maybe you can't I don't know. Just from pics I have seen of rear main bearings the inserts are one piece and not two.


My 2 cents.


Mike
__________________
1930 TownSedan (Briggs)
Still learning after all these years....
1930artdeco is offline   Reply With Quote
Old 05-03-2020, 10:03 AM   #8
dansluck
Senior Member
 
Join Date: Dec 2014
Location: Nevada
Posts: 127
Send a message via AIM to dansluck Send a message via Yahoo to dansluck
Default Re: Rear main leak part 4

From the first picture , are the flywheel bolts a little long?
Good Luck Dan
dansluck 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 02:31 PM.