[AT] Off Topic 2001 Ford F250 6.8L engine. Oil pressure gage port size.

[Dennis Johnson]

Thomas,

You will be close to me when you move. I am about 48 miles South of you in Rosenberg.

Dennis


Sent from my iPad

> On Dec 14, 2016, at 9:02 PM, Thomas O Mehrkam <tmehrkam at sbcglobal.net> wrote:
> 
> Oil pressure followup.
> 
> Oil pressure specifications. Engine at temperature 200F, 2000 rpm 
> pressure between 40 and 75 psi.  Mine is at 53 psi.   Not bad for 
> 240,000 miles.
> 
> I found a oil pressure test set at harbor freight.  $27.  It had a 
> gauge, 5 1/2 ft hose and a bunch or adapters.  It could use some type of 
> swivel. I had to crawl under the truck and out from under it at least 
> five times to relieve the torque on the hose to be able to thread in the 
> gate. A swivel would have been much easier but it worked.  The gauge 
> looped over the driver side mirror makeing it easy to perform the test.
> 
> http://www.harborfreight.com/catalogsearch/result?q=oil+pressure+tester
> 
> The pressure sender thread is 1/4 18 MPT  instead of NPT.  No O ring on 
> the gas engine just some thread sealer.   It is a straight thread. The 
> tester had a tapered thread and engaged two threads sealed fine for the 
> test.
> 
> Pressure was 30 psi at 1000 rpm idle.  28 psi in gear at idle 700 rpm 
> and 70 psi max wot.  I installed a new pressure switch and all looks 
> fine.  Time to go hunting this weekend.  Yea.
> 
> Thanks for the help.  I tried to put a tester together from parts from 
> Northern Tool but they did not have the proper gauge in stock so the 
> Harbor Freight it was. About the same price anyway.
> 
> ANTIQUE Tractor Reference.
> 
> I am moving a house on my 47 acres in Waller Texas.  When things dry out 
> I will be using the Ford and trailer to move my Farmall H and blade to 
> level the pad for the house.
> 
>>> On 12/14/2016 6:19 PM, Steve W. wrote:
>>> tmehrkam at sbcglobal.net wrote:
>>> Thank you.
>>> 
>>> For some reason I did not think about NAPA
>>> Strange it says MPT which is a straight thread not tapered.
>> The actual unit in the engine nor has the same thread form as NPT, but
>> it is a straight thread with an O-Ring that seats against the block to
>> seal it. Only the OEM switch is made that way.
> 
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