a replacement for the oil pressure gauge hose

[martybose]

A while back I started a thread about my phantom oil leak. It took some work, but I eventually found that when warm and under high pressure, the vintage oil pressure gauge hose was leaking at the swaged-on hose ends. Not too inclined to put in another 60 year-old OEM hose, I looked for an alternative. I wound up replacing both the hose and the bottom section of steel piping into the block. The photo below shows what I had originally, and what I replaced it with.

Everything was purchased from ANPlumbing.com, as follows:

PN description cost

981603 AN-3 to 1/8" NPT $2.11

989543 3/8"-24 female IFF to AN-3 $4.52

63011712 AN-3 90 degree 12" hose $19.88

Total $26.51 plus tax and freight, so less than $40 delivered to my door.

The hose is a teflon-lined braided steel line, normally used in brake systems and high pressure hydraulic systems, so it will be fine.

Marty

[Norm's Coupe]

Marty,

Same thing happened to mine about a year or two ago. I just bought a short brake line hose from the auto parts store to replace it with. Didn't have to change any of the other steel lines.

[Frank Elder]

Norm, just for giggles did you check for debris? On most of my old rubber lines I have found a certain degree of rot.

Detrius can be detrimental. Could this build up in other places, ie; hardlines?

[greg g]

I thought I posted about checking that hose. A failure there can be very harmfull to your engine. I had one made for about 9 bucks at a place that makes up hydraulic hoses.

http://www430.pair.com/p15d24/mopar_forum/showthread.php?t=5287&highlight=oil+pressure+hose

[TodFitch]

Norm, just for giggles did you check for debris? On most of my old rubber lines I have found a certain degree of rot.

Detrius can be detrimental. Could this build up in other places, ie; hardlines?

The only line I did not replace when I was putting things back together was the hard line from the gauge in the dash out to where it connects with the flex line from the engine. Unbeknownst to me, it was clogged.

Net result I spent several days trying to figure out why I had no oil pressure and was worrying my silly little head about having ruined the engine by running it with no pressure. Took me a fairly long time to hook another gauge up directly to the engine to discover that the pressure was fine.

[Norm's Coupe]

Norm, just for giggles did you check for debris? On most of my old rubber lines I have found a certain degree of rot.

Detrius can be detrimental. Could this build up in other places, ie; hardlines?

Not to worry about a clogged line on my coupe. When I rebuilt the engine and got it back together, the oil pressure valve was stuck in the block. Had so much pressure it blew the needle right off the gauge when I started it up. Nothing in those lines but oil. Had to blow the valve out with oil pressure by racing the engine to high rpms without the cap on it. Was no rubber in there either. Then replace the gauge.

[bobby horne]

On my 1938 Plymouth I used a oil pressure gauge hose from a Mazda pickup truck, 1990. Similar length.......

[Jerry Roberts]

But the oil hose from the Mazda would have metric fittings ?