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Old 03-17-2012, 01:20 PM   #1
Harylufa
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Default Crankcase Solution wanted!!!

Dear Freinds!
As my engine is in grinding shop and I want you help me with some tips to take into account. I attach some pictures
1) I noticed that in return oil hole is "blocked" am I right? The crankcase picture I mean
2)I found some picture from "Project Flathead" I want to know if where the rear main bearing oil seal can be replaced with another thing instead of packing?

I want to avoid oil leaking from crankcase Is this possible? Please I will appreciate your suggestion.

Harylufa
Attached Images
File Type: jpg P3170001.jpg (99.9 KB, 105 views)
File Type: jpg P3170002.jpg (44.9 KB, 106 views)
File Type: jpg P3170003.jpg (63.3 KB, 110 views)
File Type: jpg P3170004.jpg (42.2 KB, 114 views)
Attached Files
File Type: pdf O ring.pdf (114.8 KB, 47 views)
File Type: pdf Bearing packing.pdf (96.9 KB, 37 views)
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Last edited by Harylufa; 03-17-2012 at 02:08 PM.
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Old 03-17-2012, 02:02 PM   #2
ken ct
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Default Re: Crankcase Solution wanted!!!

First pic of the timming cover. That small hole at the top is not an oil return hole its the vacume passage for the vacume plunger at the top of the dist. ken ct usa.
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Old 03-17-2012, 02:10 PM   #3
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Default Re: Crankcase Solution wanted!!!

Quote:
Originally Posted by ken ct View Post
First pic of the timming cover. That small hole at the top is not an oil return hole its the vacume passage for the vacume plunger at the top of the dist. ken ct usa.
Hi Ken!
I mean in crankcase, a tube that came from oil filter to crankcase if you see it is blocked, Is it right? to be blocked?

Thanks
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Old 03-17-2012, 02:17 PM   #4
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Default Re: Crankcase Solution wanted!!!

That is meant to be blocked like that UNLESS you're running the bypass filter setup, in which case that hole is opened up and the return line from filter plumbed into it.
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Old 03-17-2012, 02:31 PM   #5
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Default Re: Crankcase Solution wanted!!!

Brian is correct. ken ct.
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Old 03-17-2012, 03:21 PM   #6
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Default Re: Crankcase Solution wanted!!!

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The fitting on the oil pan appears to be blocked, but it wont be, on the 'inside' part of the fitting, there will be a very small hole/slot UNDERNEATH, facing down.
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Old 03-17-2012, 04:13 PM   #7
Barry WNY
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Default Re: Crankcase Solution wanted!!!

I believe the rear "slinger" seal that really isn't a seal is what it is. Now the front seal can be done better, i got one and it is quality. But I forgot it and put the rope seal back in, they work great also.
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Old 03-17-2012, 05:06 PM   #8
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Default Re: Crankcase Solution wanted!!!

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Originally Posted by Barry WNY View Post
I believe the rear "slinger" seal that really isn't a seal is what it is. Now the front seal can be done better, i got one and it is quality. But I forgot it and put the rope seal back in, they work great also.
Hi!
I attach a picture, the rope work as well as an O Ring?

Harylufa
Attached Images
File Type: jpg Bearing packing jpg.jpg (309.5 KB, 49 views)
File Type: jpg B-6700M-onepieceseal.jpg (23.8 KB, 36 views)
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Old 03-17-2012, 05:09 PM   #9
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Default Re: Crankcase Solution wanted!!!

Quote:
Originally Posted by fordscript View Post
The fitting on the oil pan appears to be blocked, but it wont be, on the 'inside' part of the fitting, there will be a very small hole/slot UNDERNEATH, facing down.
Hi!
I must make a little hole? or change any part?

Thanks
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Old 03-17-2012, 05:22 PM   #10
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Default Re: Crankcase Solution wanted!!!

Hi!
Now in this picture I show this part that goes in camshaft head, I hope you understand me.
In my camshaft 1946 can be installed?, before disassembly never had.

I want to prevent the leaking oil in the back and in the front sides. Before assembly the engine i want to be sure what fit better.

Thank
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File Type: jpg Crankshaft.jpg (367.1 KB, 67 views)
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Old 03-17-2012, 05:59 PM   #11
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Default Re: Crankcase Solution wanted!!!

The rear seal in your picture looks like the BEST brand, that is the best seal you can get. instructuons are usually with this seal on how to install it. Smear a thin coat of RTV on the end of the seal over the aluminun seal retainer before installing the rear main cap. The one piece front seal works good, just make sure the seal wear sleeve on the crank is not worn a belley in it where the seal rides. Walt
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Old 03-17-2012, 07:31 PM   #12
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Default Re: Crankcase Solution wanted!!!

Just backing up what Walt is saying, the picture you are showing is an improved front seal, there is no one piece replacement for the rear seal.

The fitting in the side of the oil pan needs to be drilled through if you want the bypass filter to work.

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Old 03-17-2012, 07:38 PM   #13
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Default Re: Crankcase Solution wanted!!!

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Just backing up what Walt is saying, the picture you are showing is an improved front seal, there is no one piece replacement for the rear seal.

The fitting in the side of the oil pan needs to be drilled through if you want the bypass filter to work.

Mart.
Mart, I think you'll find that the round button inside the oil pan has a slot on the bottom for the oil to return. Walt
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Old 03-17-2012, 07:55 PM   #14
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Default Re: Crankcase Solution wanted!!!

Ah! thanks Walt, I wondered why it had an oil fitting in it but no apparent means of oil return.

Hary, you need to check that there is a means for the oil to pass through that fitting back into the oil pan.

Mart.
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Old 03-17-2012, 08:09 PM   #15
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Default Re: Crankcase Solution wanted!!!

Harylufa, my recommendation is to use the original type seals both front and rear. They are time tested for many miles, and when installed properly will outlast the newer front ring type seal. They have worked for the last 65 years just fine. The side drain for the oil line has a small port on the under side. Blow some compressed air through it of it has become plugged.
Some time ago you sent me a private message asking about your valve situation, to which, I responded. Did you receive my response?
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Old 03-17-2012, 08:29 PM   #16
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Default Re: Crankcase Solution wanted!!!

Quote:
Originally Posted by Russ/40 View Post
Harylufa, my recommendation is to use the original type seals both front and rear. They are time tested for many miles, and when installed properly will outlast the newer front ring type seal. They have worked for the last 65 years just fine. The side drain for the oil line has a small port on the under side. Blow some compressed air through it of it has become plugged.
Some time ago you sent me a private message asking about your valve situation, to which, I responded. Did you receive my response?
Hi Russ/40!
Ah ok, that is my doubt because I saw new seal that go between oil pan and timing cover It is 91A-6700 part. I attach a picture below. I read over there that this is better, what do you think?

Concerning valves I received and I took note about you mentioned, after this I will back asking about adjustable lifter so I can set the valve well. The engine had non regulable lifter.
but I decided to disassembly the engine cause of the temperature. Such result was sediment stacked.
Finally the engine ended in grinding shop. This man need some information such as seal in different part like oil pan, front and rear.

We think that how to avoid leaking oil because my engine always had leaked oil.

I hope to be clear for you

Thanks
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File Type: jpg 91A-6700-MOD_pJPG.jpg (20.0 KB, 2 views)
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Old 03-17-2012, 08:38 PM   #17
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Default Re: Crankcase Solution wanted!!!

Quote:
Originally Posted by Walt Dupont--Me. View Post
The rear seal in your picture looks like the BEST brand, that is the best seal you can get. instructuons are usually with this seal on how to install it. Smear a thin coat of RTV on the end of the seal over the aluminun seal retainer before installing the rear main cap. The one piece front seal works good, just make sure the seal wear sleeve on the crank is not worn a belley in it where the seal rides. Walt
Hi Walt!

Thank for you response. I thought that new seals were better, but It seems installing original rope seal will work fine.

Thanks
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Old 03-17-2012, 08:50 PM   #18
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Default Re: Crankcase Solution wanted!!!

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Ah! thanks Walt, I wondered why it had an oil fitting in it but no apparent means of oil return.

Hary, you need to check that there is a means for the oil to pass through that fitting back into the oil pan.

Mart.
Hi!
I show in picture that this passage is tight and not move at all. A copper tube came from filter oil.

This is the first time I see this in 15 years, my doubt was this was right.

Thanks
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Old 03-18-2012, 04:16 AM   #19
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Default Re: Crankcase Solution wanted!!!

Hary,

Take a real good look at the round part in the image above. There should be a small passage for the oil to flow through.

See if air will blow through it. try removing the brass fitting for a better look.

If it is really blanked off, you will need to drill through it.

I would suggest a small hole 1.5mm, but this should be discussed here before you just do it.

I must say, if that piece does have a hidden passage, then I would expect to see at least some staining of the sump where the oil has flowed down from it.

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Old 10-31-2013, 07:48 AM   #20
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Default Re: Crankcase Solution wanted!!!

Walt, We need help--8BA engine with Best rear main seals, after several attempts by my friend to seal this rear main leak, he got me involved. I would like to know your procedures for installing this seal. Does the pan gasket go between the top and bottom seals or do you cut it a little short, do you put silicon sealer on the rope ends? We are at a loss for solutions to this problem and need an experts help.
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Old 10-31-2013, 03:12 PM   #21
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Default Re: Crankcase Solution wanted!!!

Hary A lot of oil leaks in the rear are from over filling with to much oil. This oil drips from the cotter pin in the pan below the flywheel. You want to tighten the rivets or replace them and the gasket on the dip stick boss this is another place they leak. Good luck with your latest project. G.M.
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