Seek Engine bay oil pressure gauge (manometer) - 2.5 ST I beleive

[Xavier PJB]

All,
I've seen in a 911 early engine bay (a 2.5 S/T if I am correct) a cool part : an oil pressure manometer (filled with water/oil) mounted directly into the oil sending unit (the one on the left of the fan).
Does anyone saw this already ? Where to source ?

Unfortunatly, I did not take a pic.
Xavier

[Flieger]

You don't want oil to get exposed to water. It causes sludge when the additives react. That makes it acidic. It is the same reason you should avoid short trips- the condensation never gets a chance to "burn off". The level of the manometer would be all over the place if you left it in while driving, causing the oil to become salad dressing and water/oil to slosh out, so I imagine this is just a temporary, diagnostic tool?

A normal pressure gage should do the trick. You could try to calibrate it to a manometer beforehand.

[Xavier PJB]

You don't want oil to get exposed to water. It causes sludge when the additives react. That makes it acidic. It is the same reason you should avoid short trips- the condensation never gets a chance to "burn off". The level of the manometer would be all over the place if you left it in while driving, causing the oil to become salad dressing and water/oil to slosh out, so I imagine this is just a temporary, diagnostic tool?

A normal pressure gage should do the trick. You could try to calibrate it to a manometer beforehand.

Max, Thanks and I was not clear . Of course I do not want mixing water and oil (we call this Mayonnaise).
I mean the manometer dial is filled with a transparent liquid similar to water. Here is a picture of the mano type (this one is not for oil measure) :


This mano type was mounted on a steel cube, then placed instead of the normal oil pressure sending unit.

[Flieger]

Max, Thanks and I was not clear . Of course I do not want mixing water and oil (we call this Mayonnaise).
I mean the manometer dial is filled with a transparent liquid similar to water. Here is a picture of the mano type (this one is not for oil measure) :


This mano type was mounted on a steel cube, then placed instead of the normal oil pressure sending unit.

Ah, I would just refer to that as a mechanical pressure gage. It is a commonly used part for diagnosing oil pressure problems (verifying if the gage and sending unit are right). The fluid inside is glycerin. It helps dampen the needle motions to get a more stable/accurate reading. It also provides some lubrication. It is very common on high-quality gages to find them glycerin-filled.

Every time I have heard "manometer" it is referring to this, or a variation thereof. Must be a difference in vernacular between France and the US.

[Flieger]

Here is a nice one from McMaster-Carr. http://www.mcmaster.com/#3902k21/=q5us9s You will need some adapters/hoses to plumb it into the oil system on the engine, though.

They have many others here (make sure you select "pressure" and "liquid filled" on the side: http://www.mcmaster.com/#atmospheric...gauges/=q5upxu

[Xavier PJB]

Cheers Max, I will update my initial post and put Gauge instead. In french a manometer (manometre) is a gauge.
And thanks for naming the liquid in.

This mounting was not temporary and used permatnently to measure accuratly the oil pressure (direct reading) - it was really cool therefore would like to get/do one for my engine.
Cheers

[Flieger]

I updated my post #5 with some links. Not sure what the French equivalent of McMaster-Carr is, but they are the go-to place for things like this in the US.

[Xavier PJB]

FOUND IT !!!! Thanks for your help Max :
http://www.paragon-products.com/Oil-...rp-911mopg.htm


Xavier

[304065]

Xavier,

Yes of course this can be done. Here is mine, mounted for testing purposes when I did not trust the electric gauge. It is a simple matter to do this at the pulley end of the engine. I like WIKA gauges, accurate, German, inexpensive (three things that are not often found in the same description).



The really hard thing is finding somebody stalwart enough to read this gauge while you are driving.

Mayonnaise! Seen it once on the winter recovery of my car many years ago, in the oil cap. Did you know that vinaigre is actually a liason between vin and aigre? Makes sense, I learned this trying to make Dijon Vinaigrette (which I failed miserably at on my first attempt, but will keep trying)

[Xavier PJB]

The really hard thing is finding somebody stalwart enough to read this gauge while you are driving.

Mayonnaise! Seen it once on the winter recovery of my car many years ago, in the oil cap. Did you know that vinaigre is actually a liason between vin and aigre? Makes sense, I learned this trying to make Dijon Vinaigrette (which I failed miserably at on my first attempt, but will keep trying)

Lol, am only 1m80 tall, too short though. wil put someone in the engine bay while on track

The secret for mayonnaise is that each ingredients must be at ambiant temperature. I never fail one.