1957 hole in fly wheel housing cover

[SoloBird]

So I did an oil changing on my 57' TB that I have no idea when the last time that has happen since this is the beginnings of my restoration project to it.

I drained the oil and when I got under the car I noticed a hole in a pan right after the oil pan. Is this the flywheel housing pan? Not sure what this part is called, but it looks like it goes right before or below the transmission case. Is this hole suppose to be there and what part is this?

I did a motor treatment with new oil and filter, ran the car for 15min and then drained again. I also noticed oil drip from.. what I guess is the oil sending unit or oil pressure switch? Thanks

 

[CSPIDY]

If you are speaking about the small hole in the bottom of the flywheel cover
It looks like small drain hole to expell oil or tranny fluid if you have a leak

 

[SoloBird]

If you are speaking about the small hole in the bottom of the flywheel cover
It looks like small drain hole to expell oil or tranny fluid if you have a leak

Yes. Is this small hole suppose to be there then? I don't need to worry?

 

[CSPIDY]

Yes. Is this small hole suppose to be there then? I don't need to worry?

Only if oil is dripping from the hole

 

[SoloBird]

Only if oil is dripping from the hole

and if oil or a yellowing colored fluid is leaking from it, or seemed to be around the hole. What does that mean?

 

[zeroroadkill]

I’d pull the flywheel cover off and inspect seals for leaks.

 

[Hernando Muñoz]

So I did an oil changing on my 57' TB that I have no idea when the last time that has happen since this is the beginnings of my restoration project to it.

I drained the oil and when I got under the car I noticed a hole in a pan right after the oil pan. Is this the flywheel housing pan? Not sure what this part is called, but it looks like it goes right before or below the transmission case. Is this hole suppose to be there and what part is this?
View attachment 24516 View attachment 24517
I did a motor treatment with new oil and filter, ran the car for 15min and then drained again. I also noticed oil drip from.. what I guess is the oil sending unit or oil pressure switch? Thanks
View attachment 24519

Yes, there is a tiny hole in the flywheel cover to allow for oil to escape when your rear crankshaft seal is leaking (and needs replacement), so your flywheel does not get flooded with oil creating, ultimately, a problem in your starter. Also, if you have a leak in your rear main gasket, at least you will see the leak and you will realize your oil may be going low which will end damaging the engine. So, it is good to have a "leak oil hole"... I just replaced the rear main gasket on my crankshaft and the leak stopped coming through that hole in my 292 Y block.

 

[CSPIDY]

I’d pull the flywheel cover off and inspect seals for leaks.

Agreed, an external leak may also show up there because it is lowest point.
Antifreeze leaking from the top of the motor will show up there

 

[Ward 57]

and if oil or a yellowing colored fluid is leaking from it, or seemed to be around the hole. What does that mean?

Sounds like coolant. Somebody else on here mentioned it too.

 

[paul5456]

Yes - that switch is the oil pressure sender. If it is leaking oil, it needs to be replaced. These are readily available.