I cannot get any oil thru the little oil line that runs from the engine block to the distributor housing. I was thinking of running a line from the other side of the engine, near the oil filter to get oil to this area. Will that work? Does the oil journal that feeds the distributor feed oil to any other part of the engine?
- Thread starter Brownwood
- Start date
mhb@ufe
Well-known Member
- Location
- Jefferson Maine
Are you sure your not looking at the vacuum line that controls the vacuum advance for the distributor?
Mark
Mark
mhb@ufe
Well-known Member
- Location
- Jefferson Maine
That line is fed from the main oil galley so I would think you would want to find out why you are not getting oil through it instead of trying to find another source.
Mark
Mark
mhb@ufe
Well-known Member
- Location
- Jefferson Maine
Have you removed the line and fitting from the block and crank the engine to see if oil comes out?
Mark
Mark
Yep, drove it around for a few mimutes after manulally pumping oil into the distributor housing. Not a drop! Tried to run a coathanger down the passage but there doesnt seem to be abig enough hole for that. Also tried a thin weedeater line but it wont go thru. Cant really see up in there.
mhb@ufe
Well-known Member
- Location
- Jefferson Maine
I believe that is fed oil from the front main bearing to the camshaft drive gear and then to the distributor drive. I would be concerned about a possible spun bearing.
Mark
Mark
Ultradog MN
Well-known Member
- Location
- Twin Cities
Did you pull the governor off so you can
poke a wire in there well?
I assume it would be a fairly small
passage in there.
I'm trying to think of some kind of a
small, stiff wire that you could put in a
drill and try to clean it out like a roto
rooter but not coming up with anything.
Or maybe heat a wire red hot with a
propane torch and try to burn your way
through the blockage.
I don't have an empty block here to
experiment on for you or I would.
I would try to fix it right rather than
route a new line to it.
Things like that have a tendancy to break,
crack or leak and cause you to lose
oil/pressure.
poke a wire in there well?
I assume it would be a fairly small
passage in there.
I'm trying to think of some kind of a
small, stiff wire that you could put in a
drill and try to clean it out like a roto
rooter but not coming up with anything.
Or maybe heat a wire red hot with a
propane torch and try to burn your way
through the blockage.
I don't have an empty block here to
experiment on for you or I would.
I would try to fix it right rather than
route a new line to it.
Things like that have a tendancy to break,
crack or leak and cause you to lose
oil/pressure.
Destroked 450
Well-known Member
- Location
- Harned, Ky
Went down and looked at a bare block I have, the dist drive oil feed is drilled directly into the back recess of the cam drive gear (accessory gear) mounting hole, there's a drilled passage from the other side of that recess to the front main bearing.
So oil from the front main bearing comes up the the back of the cam drive gear then to the dist drive, the cam drive gear has a bushing that rides on the adapter that holds the gear in place, that adapter has a oil passage in it to lubricate the drive gear bushing.
Since you have no oil coming from the drive gear one has to wonder if something has come loose allowing the oil to leak out before getting to the dist drive or if there's a blockage at the main bearing.
Unfortunately it looks like at minimum you'll need to remove the front gear cover to gain access to the drive gear to make sure it's getting oil.
Remove the oil cap, take a air hose and blow air into the dist oil feed hole while lessening for air leaking into the engine, if there's a lot of air blowing out the oil cap hole something has come loose at the drive gear, if there no leakage or a small amount there's blockage somewhere that's most likely down at the main bearing.
Sorry I can't give you better news, but trying to feed the dist drive from another location could lead to much larger engine problems if the cam drive gear bushing isn't getting lubed.
OK, I am trying to follow but not sure Im getting it. When I look inot the threaded hole in the block it gos straight in aboit 1/2 inch and then there is a tube that runs vertically. Are you saying that tube somehow runs to the cam bearing and then there is another passage to the main bearing?
Destroked 450
Well-known Member
- Location
- Harned, Ky
No!
That oil passage is about 1 1/2 - 2 inches long, maybe a little more and goes directly to a recess in the front of the block. On these engines you have a crank gear that drives the cam drive gear, many call it the accessary gear, the cam drive gear turns the cam gear that's mounted on the cam.
The cam drive gear is mounted to the block by a adapter that bolts to the recess in the front of the block. The cam drive gear also turns the dist drive gear or inj pump gear in my case.
Oil comes from the front main bearing up to that recess then travels through another passage to the dist drive oil port.
If you can only push a wire 1/2" back into the oil hole something has it blocked.
Ultradog MN
Well-known Member
- Location
- Twin Cities
Thanks for doing this DS.
This is the kind of effort that makes this
such a great board. I have a bare block
and was thinking about doing this but it
is 115 miles away. Am going up there on
Sunday and probably would have had a
looksee if you hadn't.
This is the kind of effort that makes this
such a great board. I have a bare block
and was thinking about doing this but it
is 115 miles away. Am going up there on
Sunday and probably would have had a
looksee if you hadn't.
Destroked 450
Well-known Member
- Location
- Harned, Ky
There shouldn't be anything blocking that hole, but I'll go down and run a wire through the hole to get a actual length and see if there is some type of restrictor I'm not aware of.
As I've said all of mine are diesel and that oil passage is plugged so I've never paid much attention to it.
I've got to go get some new auger flighting for my grinder mixer as well as another pump for my shop air compressor, so it'll be later this evening or tonight before I can post back what I find.
Have a cattlemen's association meeting tonight with a free meal, can't miss that!
Destroked 450
Well-known Member
- Location
- Harned, Ky
Ok. Had a few minutes while waiting on parts
Oil hole is completely open with no restrictions, about 3/16 to 1/4" diameter
My block is plugged so I stuck the wire in from the recess end
It went in 2 3-8", add the plugs length and that should be around 2 1/2 to 2 3/4" that you should be able to push the wire into the hole
There's no other holes in the passage
Take a small pin punch and tap on whatever is in there to see if it will move, if it doesn't you'll have to pull the cover and drive gear to find the problem
If it does move you'll probably still have to pull it apart to get whatever is in there out
Sean in PA
Well-known Member
I wouldn't want to risk getting metal shavings in the oil passage, plus, if you don't know what it is that's blocking it, drilling it could do more damage than good. It really sounds like it would be best to take things apart to the point where you can see what's actually in there blocking it, and hopefully why it got there.
Destroked 450
Well-known Member
- Location
- Harned, Ky
Take a small pin punch and see if it will move first, the last thing you want is a broken drill bit stuck in there.
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