The Ford Barn

callbald · 03-07-2017, 12:49 PM

the 39 flathead has the original oil pressure gauge setup and would like to add a backup mechanical gauge. I don't trust the old gauge and don't want to disconnect it. Can I install a tee setup and so both gauges would function? Thanks

JSeery · 03-07-2017, 01:20 PM

The short answer, yep. Is the current sending unit at the driverside rear of the block? There may well be an unused opening that has a plug in it there.

Bruce Lancaster · 03-07-2017, 02:08 PM

The two stock openings are very close together but at 90 degrees to each other. If you don't have an oil filter one, the one pointing left, will have a plug in it...you need a 1/4 to 1/8 pipe adapter, probably already in the gauge kit, and the fittings that come with the tube. And a bit of manual dexterity...
If you have a filter, Tee into the line from back of engine BEFORE the last fitting at filter. This can probably be done with just the right female in/male out Tee fitting and a little pressure on the line to add a bit of curvature to make space for the Tee.

39portlander · 03-07-2017, 05:33 PM

Here is my arrangement on the 39 P/U, the first pick is an actual gauge with a ball valve that I can observe while out of the cab.

The second picture is the sending unit installed were the original one would be for a newer oil psi gauge in the cab next to fuel, H2O temp and volts.

Floyd · 03-07-2017, 06:50 PM

Just as a side note, the original Ford (King Seelley) gauges are very dependable and seldom if ever fail. The only "bad" ones I have seen where the ones that had been zapped by 12 volt conversions. Those are easy to tell because they don't work at all.
Just my opinion

callbald · 03-11-2017, 05:43 PM

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added oil sensor giving much better reading and bingo sprung a like and installing new line. Issue, came with very kinky coiled plastic line installation kit. Anyone know how to straighten out the line??

OLD AS I · 03-13-2017, 08:44 AM

My tee off for oil pressure mechanical gauge and maintaining original electric gauge. Vertical line is for the full flow oil filter system return

03-07-2017, 12:49 PM	#1
callbald Senior Member Join Date: Jan 2014 Location: Leo, Indiana Posts: 235	adding second mechanical oil pressure gauge the 39 flathead has the original oil pressure gauge setup and would like to add a backup mechanical gauge. I don't trust the old gauge and don't want to disconnect it. Can I install a tee setup and so both gauges would function? Thanks

03-07-2017, 01:20 PM	#2
JSeery Member Emeritus Join Date: Nov 2012 Location: Wichita KS Posts: 16,132	Re: adding second mechanical oil pressure gauge The short answer, yep. Is the current sending unit at the driverside rear of the block? There may well be an unused opening that has a plug in it there.

03-07-2017, 02:08 PM	#3
Bruce Lancaster Member Emeritus Join Date: May 2010 Location: Madison, NJ Posts: 5,230	Re: adding second mechanical oil pressure gauge The two stock openings are very close together but at 90 degrees to each other. If you don't have an oil filter one, the one pointing left, will have a plug in it...you need a 1/4 to 1/8 pipe adapter, probably already in the gauge kit, and the fittings that come with the tube. And a bit of manual dexterity... If you have a filter, Tee into the line from back of engine BEFORE the last fitting at filter. This can probably be done with just the right female in/male out Tee fitting and a little pressure on the line to add a bit of curvature to make space for the Tee.

03-07-2017, 05:33 PM	#4
39portlander Senior Member Join Date: May 2010 Location: Suth'N Maine Posts: 2,026	Re: adding second mechanical oil pressure gauge Here is my arrangement on the 39 P/U, the first pick is an actual gauge with a ball valve that I can observe while out of the cab. The second picture is the sending unit installed were the original one would be for a newer oil psi gauge in the cab next to fuel, H2O temp and volts. Last edited by 39portlander; 04-15-2018 at 06:02 PM.

03-07-2017, 06:50 PM	#5
Floyd Senior Member Join Date: May 2010 Posts: 486	Re: adding second mechanical oil pressure gauge Just as a side note, the original Ford (King Seelley) gauges are very dependable and seldom if ever fail. The only "bad" ones I have seen where the ones that had been zapped by 12 volt conversions. Those are easy to tell because they don't work at all. Just my opinion

03-11-2017, 05:43 PM	#6
callbald Senior Member Join Date: Jan 2014 Location: Leo, Indiana Posts: 235	Re: adding second mechanical oil pressure gauge Sponsored Links (Register now to hide all advertisements) added oil sensor giving much better reading and bingo sprung a like and installing new line. Issue, came with very kinky coiled plastic line installation kit. Anyone know how to straighten out the line??