How to fit an oil pressure gauge

TheHood

There seems to be a lot of conflicting opinions on the best place for an oil temp sensor, although the majority of people seem to suggest the sump is better than the oil fiter housing. Theory being it's a better place for a more average temperature reading. dunno.. Since I'll have a spare sump I'm going to shamelessly copy Techieboy and get a boss from Earls performance welded in 🙂

By the way, no need for any fancy wiring. I wrongly assumed the oil pressure light on the dash would come on if I pulled the plug on the pressure switch. It doesn't so I'm going to use the aux out on my SPA gauge to hook up a buzzer alarm instead. It does highlight just how useless the stanard setup is - you could have a faulty switch and never know :thumbdown:

cologne

Hello alanoo, you have written at October 16th, 2009 :
“”We are trying different springs loads for this valve to reach a more clever oil pressure at load (around 6 bar max at WOT) “””

Sorry of my bad english. Im from cologne in germany iam verry interresting at a spring like 6 bar.
Last week i changed the oil. And my oilfilter had a hole ( diameter ca. 12 mm) and the filter ist shorter as normal ( ca. 12mm shorter). First i testet the valve from the oilpump. If i take away the skruw and the spring, the valves came alown down. And the hole for the valve ist total ok.
Then i instalated a oil pressure tester ( mechanial thing , no elektrik) with a long pipe inside the car. Here in colgone in we have nearly 0 celsius, sometimes some celsius under sero.
Starting engine oil pressure 4-5,5 bar. 3000 u/min 6-6,5 bar 4500 u/min 8 bar or more
If the oil is hotter up to 60-70 celsius ist better, but not good. If oil up to 100 celsius and WOT its 5-6 bar---to my feeling to high
I d`ont understand why they made such a higt oil pressure.

My thinking:
Ive cut the spring 10-12 mm, it comes only 0,3 bar down when engine is cold. So, cutting ist not the solution, because then i havent enought spring lengt.---it was only for test when car is standing—not drive at street.

If we have another spring load like 6 bar, im afraid that the oil ( when engine is coold) comes not quick enought to the thinks were the oil is needed or it comes not enough oil------but i dont now
when the oil is coold and the original valvespring opend at 8,6 bar its total open. if the oil is thick and pasty the 2 squared holes at the full open valves cant get the oil back because the squared holes are to little for the much oil----- but i don`t now

thanks for answers

alanoo

I can not help you much because we haven't found yet the perfect spring combination to have a good working pressure at high RPM (₆ rpm), but an acceptable one at idle.
Actually my spring combination gives only 1.5 bar at idle, which is a bit low.

vocky

just get a brand new z20net oil pump, they are a better oil pump than the z22se :thumbup:

ok I know it's expensive but cheaper than a new engine dunno..

rik1083

got any explanation/pics of the differences?

cologne

thanks for answers

some people sayed that the oil pump of z20net and z22se is the same.
if gm designded the l860 engine they want first bring the z22se but they touth also of the z20net and may be of the Z20NHH witch is in the new opel gt.
and so they made a high oil pressure in the z22se. if the z20net cames, the pumpe in the z20net is the same, but automatically with lower pressure of the z20net, because the z20net has 4 holes more to splash oil to the pistons for cooling

then i´ve heard the oil pump from the z20net is with more oil pressure as the z22se because the z20net has 4 holes more to splash oil to the pistons for cooling.

i´m thinking wat`s going on if we are in russian or so, with 25- 30 celsius negativ-- normaly gm had tested this bevor.
i know if its more negativ like 40 or so, the oil and water must be warm up. or not stopp engine

in a few days i´LL ring the tecnical from opel and talk with them. at the same time with saab. but its not easy.
did some one know the oil pressue of the saab 9-3 with like 175 hp

vocky

z20net oil pump is uprated, not sure what they did

oil pressure is the same as the z22se, maximum of 8.6 Bar / 125 psi, idle is a little over 4 Bar / 60 psi

rik1083

why do I get 6bar at idle most of the time?

vocky

pressure relief valve sticking shut dunno..

rik1083

just bought this from ebay
vocky, do you think I can mate the sump sensor up with the "oil pressure" light on the dash?

vocky

mines fitted and working fine :thumbup:

0v goes to one side of the oil level sender, the other side goes to one side of the relay coil, the other side of the relay coil goes to a switched +12v and the Normally Closed (NC) contact connects to 0v and the oil pressure sensor wire

you need to use the relay NC contacts because the oil level sender works in fail safe mode, use a 5 pin relay :thumbup:

nickb777

I am having to order some more bits from pirteck so does anybody want any kits at the same time (up to you though to drill the 1/8 hole)?

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