The Ford Barn

Squally · 11-16-2016, 02:18 PM

The valve cover on our 1930 car has an extra tube that looks like it might be an additional oil return tube. Has anyone seen this before or know what it is?

AL in NY · 11-16-2016, 02:41 PM

Looks like someone added the tube to supply more oil to the valve chamber. Don't understand why because all the output of the oil pump goes to the valve chamber to begin with. The only thing that tube does is redirect the oil to the rear of the valve chamber.

CarlG · 11-16-2016, 02:46 PM

The engine that came with my pickup had a tapped hole in the valve cover in that exact location, but it just had a plug in it. Never knew just what it was for. It does seem strange that it would be taking freshly pumped oil and dumping it in the rear of the valve chamber.

tinkirk · 11-16-2016, 02:47 PM

looks like they are supplying the back of the valve chamber so it gets oil sooner than the way it is designed
which i don't think is a bad thing because the way the oiling system is designed the oil flows forward and floods the chamber before the rear bearings get oil

C26Pinelake · 11-16-2016, 03:10 PM

another backyard mechanic that thought he was smarter than Henry and crew! Wayne

George Miller · 11-16-2016, 03:39 PM

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It could have been a oil filter return line, from the old days.

PC/SR · 11-16-2016, 05:12 PM

I wonder if there might be a distribution tube on the inside, spraying oil onto the valve stems/lifters, or into the other 2 wells?

tinkirk · 11-16-2016, 05:54 PM

Quote:

Originally Posted by PC/SR

I wonder if there might be a distribution tube on the inside, spraying oil onto the valve stems/lifters, or into the other 2 wells?

Now thats a good point could very well be we've done that with race motor

bunnyc · 11-16-2016, 06:03 PM

The valve cover on my '30 engine has the plug shown in the photo. Looks like it could be 1/8" NPT.

tinkirk · 11-16-2016, 06:08 PM

Quote:

Originally Posted by Squally

The valve cover on our 1930 car has an extra tube that looks like it might be an additional oil return tube. Has anyone seen this before or know what it is?

Now I would like to see the inside of the cover and the chamber itself to see if they blocked off the original oil feed.

Gold Digger · 11-16-2016, 06:12 PM

I bought a combine engine back 51 years ago to use in a car that had an oil filter that was connected in the same places. An old mechanic told me to get rid of it that it was trouble looking for a place to happen. So I took it off.

wensum · 11-17-2016, 02:57 PM

It could also be a conversion to mains pressure oiling.
That is the take-off point for any conversion to mains pressure.
It's what happens inside the valve chamber that will explain the modification?
Keith

Bob Bidonde · 11-18-2016, 10:13 AM

That tube short circuits the oil output of the pump. It does fill the rear oil dams before the front ones.

40 Deluxe · 11-18-2016, 05:49 PM

Until the cover is pulled we don't really know what that line is for.

Squally · 11-18-2016, 06:21 PM

I pulled the cover today. There's nothing on the other side.

11-16-2016, 02:41 PM	#2
AL in NY Senior Member Join Date: May 2010 Location: Southern Upstate New York Posts: 1,160	Re: Valve Cover has Extra TUbe Looks like someone added the tube to supply more oil to the valve chamber. Don't understand why because all the output of the oil pump goes to the valve chamber to begin with. The only thing that tube does is redirect the oil to the rear of the valve chamber. __________________ AL in NY

11-16-2016, 02:46 PM	#3
CarlG Senior Member Join Date: Nov 2010 Location: Anchorage, Alaska Posts: 9,115	Re: Valve Cover has Extra TUbe The engine that came with my pickup had a tapped hole in the valve cover in that exact location, but it just had a plug in it. Never knew just what it was for. It does seem strange that it would be taking freshly pumped oil and dumping it in the rear of the valve chamber. __________________ Alaskan A's Antique Auto Mushers of Alaska Model A Ford Club of America Model A Restorers Club Antique Automobile Club of America Mullins Owner's Club

11-16-2016, 02:47 PM	#4
tinkirk Senior Member Join Date: Jul 2015 Location: SouthWest Michigan Posts: 363	Re: Valve Cover has Extra TUbe looks like they are supplying the back of the valve chamber so it gets oil sooner than the way it is designed which i don't think is a bad thing because the way the oiling system is designed the oil flows forward and floods the chamber before the rear bearings get oil

11-16-2016, 03:10 PM	#5
C26Pinelake BANNED Join Date: May 2010 Location: Michigan / Ontario border, Sarnia, Ontario. 50 miles from Detroit and 150 from Toronto. Posts: 5,800	Re: Valve Cover has Extra TUbe another backyard mechanic that thought he was smarter than Henry and crew! Wayne

11-16-2016, 03:39 PM	#6
George Miller Senior Member Join Date: May 2010 Location: NC Posts: 2,975	Re: Valve Cover has Extra TUbe Sponsored Links (Register now to hide all advertisements) It could have been a oil filter return line, from the old days.

11-16-2016, 05:12 PM	#7
PC/SR Senior Member Join Date: May 2010 Location: Santa Rosa, CA Posts: 1,278	Re: Valve Cover has Extra TUbe I wonder if there might be a distribution tube on the inside, spraying oil onto the valve stems/lifters, or into the other 2 wells?

11-16-2016, 06:12 PM	#11
Gold Digger Senior Member Join Date: Nov 2011 Location: Arkansas & Alaska Posts: 643	Re: Valve Cover has Extra TUbe I bought a combine engine back 51 years ago to use in a car that had an oil filter that was connected in the same places. An old mechanic told me to get rid of it that it was trouble looking for a place to happen. So I took it off.

11-17-2016, 02:57 PM	#12
wensum Senior Member Join Date: Apr 2011 Location: New Zealand Posts: 444	Re: Valve Cover has Extra TUbe It could also be a conversion to mains pressure oiling. That is the take-off point for any conversion to mains pressure. It's what happens inside the valve chamber that will explain the modification? Keith

11-18-2016, 10:13 AM	#13
Bob Bidonde Senior Member Join Date: May 2010 Location: Long Island, NY Posts: 3,464	Re: Valve Cover has Extra TUbe That tube short circuits the oil output of the pump. It does fill the rear oil dams before the front ones. __________________ Bob Bidonde

11-18-2016, 05:49 PM	#14
40 Deluxe Senior Member Join Date: May 2010 Location: now Kuna, Idaho Posts: 3,778	Re: Valve Cover has Extra TUbe Until the cover is pulled we don't really know what that line is for.