So, I have a 272 in my F100. Left side of block I have the oil pressure switch, and next to the switch is another port. I believe it is threaded, but not absolutely sure. Should this port have a plug in it or some other sensor? I don't see anything running out of it. Thanks
272 oil pressure switch and what else
- Thread starter tommyleea
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paul2748
Well-known member
There are a number of oil gallery plugs in horizontal line with the sender. If it's not in line, then just check the hole with something that is thin enough to go into it. If it doesn't go into the inside, then no plug is needed.
dmsfrr
Well-known member
There are 4 threaded holes in the main oil galley passage on that side of the block. The plugs close the holes used to drill oil passages to the bearings. (photos 1 & 2)
Also on the side of the block are two threaded holes used for some engine mounts, depending on which type vehicle the block is going into. (photo 3, yellow arrows)
The circled fitting in photo 3 is a coolant drain.
Also on the side of the block are two threaded holes used for some engine mounts, depending on which type vehicle the block is going into. (photo 3, yellow arrows)
The circled fitting in photo 3 is a coolant drain.
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Thanks for the pictures. I will have to post some pictures of what I have. I think I have an oil pressure switch in the block coolant drain hole! The switch is not to the rear of the filter, but in front towards the radiator.
Copy..Thanks..
dmsfrr
Well-known member
The oil pressure switch can go into any of the (4) holes in the main passage. Some vehicle models have the switch in different places due to other hardware in the way.
No starter brace that I know of, it bolts to the bellhousing.
Only a few holes on the right side of the block.
The large pair in the middle are for a motor mount.
There's a coolant drain toward the front and an alternate oil dipstick hole at center just above the oil pan.
Two other threaded holes several inches on either side of the alternate dipstick hole, I have no idea.
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Daves55Sedan
Well-known member
On the car engines, the oil pressure sending unit is just to the right of the crankcase ventilation hole (looking at dmsfrr's photo, he has his blocked off with a plate). You will also notice immediately above the oil press hole, there should be a coolant drain ****. Not sure if they had it in the same place on trucks though.
dmsfrr
Well-known member
The engine in the photos I posted above went into a '55 T-Bird so some of the bolt-on pieces on the block won't be the same as a truck or full-sized car. Example: the crankcase vent on the side is blocked off and a long road-draft tube from the rear of the valley pan was the oem setup.
The oil pressure switch may not be where Ford put it in '55 (T-Birds) but it was the most convenient location for me, given the other parts of the car to work around. The next fitting forward of the oil filter is/was a bit too close to the flange of the steady-rest, IIRC.
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My Old Blue
Member
As I'm cleaning up my 312 57' block in my 56' Country Sedan painting as I go, I saw a port not shown in any pictures I could find nor this post. Take a look at the circled feature. I'm assuming it is in a water jacket location and just a plug of some sort? Any ideas to help me understand the origins of this motor and that plug be appreciated.
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KULTULZ
Well-known member
As I'm cleaning up my 312 57' block in my 56' Country Sedan painting as I go, I saw a port not shown in any pictures I could find nor this post. Take a look at the circled feature.
I'm assuming it is in a water jacket location and just a plug of some sort?
Any ideas to help me understand the origins of this motor and that plug be appreciated.
That is too high to effectively drain the coolant. The OEM drain provision was further down and forward on the skirt -
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My Old Blue
Member
My thoughts as well. I feel it is a sensor of some sort, but I do not see any reference photos or manuals that show that feature. Appears that a wire attached to it with a nut. This is a 57 replacement motor that may have come from a truck I'm gathering.
My Old Blue
Member
Yes, rubber that has been compressed. I have not read or seen a mod like what you are leading to. Block number tells me a 57' and crank is 312. Just speculating as you that it was some mod drilled into that location. Just par for the course for my wagon. I have found so many different year parts on this motor.