Oil pressure

[Fez887]

Just checking on correct oil pressure reading while sat ticking over, out of gear, engine warm - mines reading just under 30psi - sound about right?

[FunkyGibbon]

Mines a bit higher than that, but I think the crucial
things is a consistent oil pressure rather than absolute value as they are all different.

[kris450]

As above !

But what sender are you running as different units can give vastly different readings ?

[Fez887]

Will need to check sender - what’s the differences just out of interest?

Yep the pressure is consistent and obviously rises when in gear and accelerating,.

[TarquinMX5]

30psi at hot idle is fine, the RV8 is notorious for relatively low pressure. As stated, consistency is a good pointer (though consistently zero is probably not ). Which oil/grade?

[Fez887]

Sorry - Car was serviced when I purchased it last year and not due service until Sept so had no input on that yet. Any recommendations?

[Fez887]

Sorry - Car was serviced when I purchased it last year and not due service until Sept so had no input on that yet. Any recommendations?

[McAuslane325]

Valvoline VR1 Racing 20w-50 Highly Refined Mineral Oil. Consistently recommended on various RV8 forums.

[Fez887]

Had an S previously, and that’s what I used so makes sense - thanks for the feedback

[bobfather]

These oil pressure senders are simple devices, a tin diaphragm flexes due to oil pressure change, the diaphragm is connected to a cantilever which wipes a contact across a carbon or wire wound resistor. They are set at manufacture to give the correct resistance at mid-range. No adjustment is possible for range accuracy, it is assumed that manufacturing tolerance will provide a reasonable range accuracy. The dash gauge is similarly simple though this does have range adjustment. The accuracy of this system is so poor that the gauge should just show red-green-red, as long as you’re in the green you’re okay

[NicBowman]

As James Agger pointed out when I picked up my Griff from him, all the gauges are 'approximate'.

They wave in approximately the right direction…


Nic

[Fez887]

sounds about right.

[citizen smith]

Perhaps it might be an idea to buy a capillary oil pressure gauge, to obtain a more accurate reading.