Club 80-90 Forums

When you consider this
Taken from the wiki.

Cold idle 45-70 psi
Cold 2000 rpm 50-70 psi
Cold 4000 rpm 50-70 psi

Hot Idle 8-15 psi (8 getting a bit low!)
Hot 2000 15-35 psi
Hot 4000 30-45 psi

My new(er) engine has good pressures
50-65 psi cold

10 idle (hot)
25 @ 2500
39 @ 3600

What I find odd is that the old engine was 5 psi better
Yet sounded noisier.
How do you suspect the oil pump rather than the bearings?

Don't worry about it, too many other factors to influence 5psi difference.

There is indeed.
If the OP guage wasn't in the cab I wouldn't have posted this.

noise can be tappets and valve guides worn as well as piston slap

I see Marco makes a 30mm triple o ring pump
..impressive figures.

Tempted

Slugbelly fitted an OP gauge in his camper ... spent 3 weeks frightening himself stupid and losing sleep at nights so he covered it up again.

Sometimes less is more.

kevtherev wrote:I see Marco makes a 30mm triple o ring pump
..impressive figures.

Tempted

Done a few, gets around the sealing problems and thick gasket/excessive end-float problem) but its a bit of an overkill without a decent cooler: a bigger pump just works the oil harder and costs you hp as well as heating it up faster, leading to lower pressures once hot...
26mm is quite adequate with a cooler (not the oil/water interwarmer)
FYI the wbx6 uses a 30mm pump to feed 4 more tappets, two more big ends and another main bearing.

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I have to say fitting an oil cooler is one method I would like to persue.
It seems logical, and far less intrusive.

There's even room for the thermostatic take off at the filter.
Thanks Ian.

couldn't agree more.. take a holistic approach chap.

First silly 1.9TD diesel I built (over ten years ago) I drove to the pressure and temp of oil from gauges in the cab.. They ended up being named the "worry gauges"