infidel

You might peg it on a cold winter start, 120 psi would be better but hard to find.
The pressure reading from the top of the filter housing tends to be about 15-20 psi higher than the stock gauge.

ade's ram

Does anyone else concure with the Doc's idea that copper does not flex, i thought itwould be ideal, but if he is right perhaps i'll have to think again, when you buy brake pipes here in the UK you can either get a copper mix metal or plain copper pipes, all our domestic central heating pipes are copper( i know it's not the same thing ) but they are exposed to high temps, what is the best solution, i will go with the majority............ade

Dr. Evil

You can get custom made hydraulic hose for resonable. PM me if you are interested, I have a place in mind.

ade's ram

I don't have a problem getting hydraulic lines made up, just need to know material to be used, and i was just being economical as i had some spare tubing in the garage

infidel

Doc is right. Pop the hood with your engine running, give it some throttle and notice how much the engine moves on it's mounts. This is why copper tubing will have to flex somewhere and could eventually break.

Plastic 1/8" tubing works for me. If you want a higher quality than comes with the gauge install kits buy 1/8" air brake line and push it though some 1/4" tubing that will form a protective sheath against kinks, cuts and abrasion.

I find that hydraulic or braided line to be too hard to route around especially if the gauge is in the A pillar. Line with the braid on the outside tends to saw though anything it touches.

ade's ram

Thanks again guys, point taken.It's easy when you know how and why..

Rattlerattle

Are the oil pressure guages any different than say an air pressure guage? Other than the obvious that it would be labelled air. I have seen a couple of them that are 120 to 150 psi.

wannadiesel

Pressure is pressure, the gauges don't know.

Rattlerattle

Thanks wannadiesel,

Figured as much but nice to be sure before hooking stuff up.

infidel

The only gauges I've ever seen that weren't compatible with most everything except strong acids are oxygen gauges.

Did you check out the gauges here> http://www.surpluscenter.com/sort.as...s&keyword=NFGA

Only $8 for this Stewart-Warner gauge made for Freightliner

Rattlerattle

Actually you were kind enough to point out that site when I was looking for a fuel pressure guage.

I also ordered an AMI 0 - 150 psi air pressure guage for if I one day get around to OBA. Might just use it for oil pressure as it would be more reliable than the factory one.

Thanks again.

ade's ram

OK so it's plumbed in, after a few minor leaks, it reads 75psi on cold tickover, it's about 16deg C here today, 85-90psi at crusing speed, and 55psi when warm at tickover, does not seem to be to removed from the OEM dash gauge.