Oil pressure and Cam Jounal Issue

I'm trying to fix an oil pressure issue after a engine rebuild. This is a follow up on loss of oil pressure question after engine warm up that I got into several months ago. The I finally got around to pulling engine and removing pan. I pulled the mains and have some scoring of main bearings (probably because I ran it too long with low pressure as there was fine metal in bottom of pan) so I will have crank ground with new bearings. Oil pump was looked at by mechanic and he thought it was fine. I did something unconventional and rigged up a pressure sprayer with oil and connected it to block oil port and pressurized it with oil (with bearings back on) and it was squirting out of front cam journal (in engine)! There seems to be a notch on the cam end and the oil only leaks out when the cam is in a certain spot on rotation. I have no idea if this is normal but would think it would affect oil pressure. I other suspicions on issue but I will would tackle this question first. Cam journal was supposedly checked when engine was worked on. Thanks for any help. Bill
 
(quoted from post at 01:06:43 07/13/16) Sorry, 2N, thought it was assumed since since this is forum which basically is the same engine.
es, it is the 9N/2N/8N forum, but people post all kinds of "stuff" here & since no N tractor has such a notch in the cam journal, it was necessary to ask. You need to examine further, as what you describe as a notch is unlikely. Post a photo of that notch.
 
I think the notch is in all of the journals for oil passage. I would think you could see oil coming from the others but their view might be blocked.
 
(quoted from post at 00:21:43 07/13/16)
(quoted from post at 01:06:43 07/13/16) Sorry, 2N, thought it was assumed since since this is forum which basically is the same engine.
es, it is the 9N/2N/8N forum, but people post all kinds of "stuff" here & since no N tractor has such a notch in the cam journal, it was necessary to ask. You need to examine further, as what you describe as a notch is unlikely. Post a photo of that notch.

I have a few N cams out and I am pretty sure some have solid journals and some have a machined notch running at an angle on part of the journal . I had wondered why the notch was there . It has been a while so I can't recall which end or if it was one or all of the journals . Best guess would be to lube the timing gears when the slot lined up with the oil hole ??? Might have been an aftermarket cam design that was carried over to the N cams ? I have to run by the shop after work and I'll check it out .
 

This eBay ad shows a notch on the last journal if you look at the 4th pic in the listing

http://www.ebay.com/itm/Ford-9N-Tractor-IH-GOOD-Working-engine-motor-camshaft-cam-shaft-cam-drive-gear-/371655470289?hash=item5688646cd1
 

My explanation for the leak as you describe it is the journals on the cam its self have a notch when its lined up with the oil feed hole it could leak more than what you would consider normal.

The notch is cut on the back side of each journal.

I would check the pump no matter what another told you. There are more to it than just the gears...

If It deposited chit in the pan it deposited it thru the hole engine.

http://forums.yesterdaystractors.co...;postorder=asc&highlight=pump&start=0

search for Steve Dabrowski post its full of good info, info that is overlooked even by a mechanic.
 
Well, Ken, you can box my ears & wash my mouth out with Lifebuoy soap! I flat didn't remember that, if I ever noticed it. Haven't seen one in over 15 years though. :oops:
 
May be off topic,but mentioned. Is there anyone here that installs and reams the bushing in oil pumps? I'm needing mine rebuilt and have the kit,just not the reamer.
 
Search around for an automotive/ tractor repair shop. Sometimes they are associated with a NAPA type store or similar type store that sells and does rebuild work. Someone who also builds racing car engines can do this work. It is not a difficult job.
 
(quoted from post at 12:02:59 07/13/16) May be off topic,but mentioned. Is there anyone here that installs and reams the bushing in oil pumps? I'm needing mine rebuilt and have the kit,just not the reamer.
OH has done those before & may still do them. You can find phone & e-mail address here:
http://windyridgefarm.us/
 
The third photo from the left shows the notch like mine. That oil really comes out of the notch when its aligned and pressure is applied. Must be normal.
http://www.ebay.com/itm/Ford-9N-Tractor-IH-GOOD-Working-engine-motor-camshaft-cam-shaft-cam-drive-gear-/371655470289?hash=item5688646cd1
 
Thanks Ken. The notch appears to be straight and goes to about center of journal. I guess it drags the oil for increased lub to the inside to engine. Can't be used to lub gears because it is on wrong side.
 
(quoted from post at 17:58:02 07/13/16) Thanks Ken. The notch appears to be straight and goes to about center of journal. I guess it drags the oil for increased lub to the inside to engine. Can't be used to lub gears because it is on wrong side.

I couldn't remember where the notch was until I saw a cam on eBay . I did some research on where to place the hole when installing new cam bearings on ohv v8s etc .They were always placed at the 6 o'clock position and you would look through the oil galley hole from the main journal to know when to stop . Well the bearing manufacturers say that is the worst position . Oil gets wicked between the cam and the bearing to form of film between the metal parts . From 12 to 2 o'clock it the best location for oiling the cam . Long story short the low pressure from a worn n motor combined with the oil feed location probably starved the original designed cam journals for proper lubrication . The cam may have even blocked the oil feed ???
 
(quoted from post at 10:01:00 07/13/16) Well, Ken, you can box my ears & wash my mouth out with Lifebuoy soap! I flat didn't remember that, if I ever noticed it. Haven't seen one in over 15 years though. :oops:

LOL , I remember lots of soap as a kid . I can't remember who it was , but I remember an older lady telling me "if you bite my finger your getting a whoopin too "
 
So, can the cam be removed by rotation without taking the keepers off the valves to release pressure on lifters? I want to check clearance on cam journals. I don't want to leave nothing to chance. Thanks.
 
If you don't want to leave anything to chance you are going to have to disassemble the engine completely and, as HOBO pointed out, clean everything everywhere especially the oil passages. There is no easy way in my opinion. Also, keep in mind parts need to be proven good by you for reassembly. This, to me, means completely disassembled and measured. If it is in spec. after cleaning, blow it out with compressed air, lubricate properly and install the part. I ALWAYS cover all my rebuilds with a trash bag overnight. If you cannot verify what the mechanic did when inspecting your oil pump, then I would assume nothing and measure it. With engines and oil pressure you need to be picky. I've found this to be true with other items on vehicles as well. Hope this helps.
 

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