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12-11-2019, 05:44 PM | #21 |
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Re: 33 Rear Main Leak
I run that set up in one of my 34s late 35/36 block with early pan ,I don't see a problem with the vent its just immobilised, maybe more sludge .I have in it a late pump maybe 60PSI cold ,I intend to remove the pump or modify it to reduce pressure ,I seem to remember a Ford bulletin (v8 times )in 32 advising dealers to modify the relief valve to reduce oil consumption ,I was losing a lot of oil so removed the pan and found no tube and two more holes drilled in the bearing cap I plugged them up and fitted a tube that stopped the leak ,As said fit the tube straight down ( larger and low ) in the oil ,cannot see you pump but check it for excessive pressure .you may have excessive pressure at the main ,there is another way of dealing with it that requires a modification .Ted
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12-13-2019, 12:26 PM | #22 |
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Join Date: Dec 2019
Posts: 24
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Re: 33 Rear Main Leak
I was able to work on the car more today.
I removed the tube from the rear main, which was not plugged. I do have an original tube and will try to replace the tube that I removed. I removed the oil pump and took photos. I have an original rebuilt '34 pump that I will likely use instead of this pump, but I am interested in thoughts/input. I removed the fuel stand and have attached photos for comment/input. Also attached is a photo of the spacing between the main bearing studs. |
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12-13-2019, 12:43 PM | #23 |
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Join Date: May 2010
Location: southeastern Michigan
Posts: 10,072
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Re: 33 Rear Main Leak
If you revert to the '34 oil pump you will need to install the snap-in baffle pan missing from your oil pan (judging from your first batch of photos).
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12-13-2019, 02:56 PM | #24 |
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Join Date: Jun 2010
Location: St Croix Falls WI
Posts: 2,080
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Re: 33 Rear Main Leak
This is what DavidG Is referring to .
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12-13-2019, 03:05 PM | #25 |
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Join Date: Jun 2010
Location: St Croix Falls WI
Posts: 2,080
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Re: 33 Rear Main Leak
Your intake is 34 .
Fuel pump stand is early 34 " straight back " type . You can put that stuff back together as it is not your issue . Oil pump is newer and could possibly cause your issue if it has too much pressure-volume . If I am reading your tape right it looks to be 3" spacing on main studs . If it is indeed 3" it is babbit mains . Did your leak start suddenly ?? How far was the tube fitting screwed into the main cap ? If it's in too far it acts as a dam = leak . Oil pump drive gear cover-gasket can cause your issue also . |
12-16-2019, 04:16 PM | #26 |
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Join Date: Dec 2019
Posts: 24
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Re: 33 Rear Main Leak
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I dropped the rear main bearing and used plastigauge. The rear main bearing cap is wider than 3" and has an insert. The plastigauge showed that the bearing was within spec at .003. I re-tapped the rear main bearing hole and have an original tube to reinstall (the one that was in there was 1/3 the size of the original tube and may be backing up the oil in the back of the rear main bearing cap). Can someone please post a photo of which direction the tube should be facing (I assume straight down rather than an angle down). With regard to the oil pump, how can I tell the pressure-volume? Given that I do not have a baffle pan, I will likely reuse the pump that came out. Thanks. |
12-16-2019, 05:42 PM | #27 |
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Re: 33 Rear Main Leak
From what I have read the pump you have looks like the one that came out in about 39 ,it has enough pressure to lift the valve in the valley so you get more over the timing gear and more to the back of the distributor and down on the front seal .is it possible that its flowing back from the seal under the pan to give the allusion that the rear is leaking more ,Like mine does needs a modern seal , the
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12-20-2019, 03:58 PM | #28 |
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Join Date: Dec 2019
Posts: 24
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Re: 33 Rear Main Leak
Hi, Is this the correct way that the tube should face? What torque to you use for the main bearing caps? Thanks!
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12-20-2019, 06:12 PM | #29 |
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Join Date: Jun 2010
Location: St Croix Falls WI
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Re: 33 Rear Main Leak
Tube is installed right .
How many turns is it in ? I use 5 and Loctite it . If in too far it acts as a dam . Look inside and you will see what I am talking about . Middle pic in post 7 shows a NOS one properly installed . The pump you had may hit the stock tube . I have extra baffles if you need one . |
12-20-2019, 10:22 PM | #30 |
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Join Date: Jul 2010
Posts: 243
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Re: 33 Rear Main Leak
Post 13 says these have main bearing shims,post 20 says no shims. Which is correct?
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12-20-2019, 10:33 PM | #31 |
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Join Date: Jan 2011
Location: sw minnesota
Posts: 4,543
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Re: 33 Rear Main Leak
post 13 was me, incorrect info, no shims on the early v8's
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12-20-2019, 10:38 PM | #32 |
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Join Date: Jul 2010
Posts: 243
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Re: 33 Rear Main Leak
thank you
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12-21-2019, 11:25 AM | #33 |
Member
Join Date: May 2010
Location: Sask. Canada
Posts: 97
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Re: 33 Rear Main Leak
I had a leak out the back area that I thought was the rear main. Turned out to be a bent oil pan not seated properly on the seal.
Last edited by ford33; 12-21-2019 at 11:30 AM. |
12-21-2019, 07:08 PM | #34 | |
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Join Date: May 2010
Location: 60615,330th Ave.,Clare, Iowa, 50524
Posts: 1,457
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Re: 33 Rear Main Leak
Quote:
That tube is way to small, put it back to original size! Also what does the end play measure, and oil clearance? Herm. |
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