So i hooked up the Land Rover oil pressure gauge and it's showing 30psi at idle and goes past 80 (and it'd probably kept going if it had where) when it's revving.
Is that normal?

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General George - 1967 Land Rover 2a SWB 1983 OM617 Turbo

Yes.

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Thank you, i remember reading somewhere here that the pressure normally runs high i just couldn't believe my eyes

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General George - 1967 Land Rover 2a SWB 1983 OM617 Turbo

If it is a 617 Turbo when the Engine is cold on a W123 at idle it would peg the Gauge at 3 Bar and when hot the idle can drop to as low as .5 Bar.

Hot or cold when you rev up the Engine it pegs the Gauge at 3 Bar (and the Oil Pressure should rise fast) and when I hooked up a test Gauge when the Engine is reved up hot or cold I got 97 psi.

In the Manual it has that the Oil Pump Relief Valve opens ad 110 psi so that sould be the absolute max you could get when you rev the Engine.

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84 300D, 82 Volvo 244Gl Diesel