Bypass Valve on Stock Oil Filter Console, Looking for relief pressure of bypass valve to help with design of remote oil filter and cooler Options

[Mr Beckstar]

Hi all.

I have a 4 cylinder 2 litre and am adding a remote oil filter and oil cooler circuit via a spin on adaptor attached to the stock oil filter console mount. But I noticed the oil filter bypass valve in the stock oil filter mount (circled in photo below) and now I’m concerned that, at high rpm, I’ll be bypassing the remote cooler/filter circuit. Does anyone know the bypass valve relief pressure setting? Knowing that would at least allow me to judge whether it’s an issue.

[Superhawk996]

Food for thought

If you look at histograms of average vehicle speed, engine speed, and vehicle acceleration you will find that the amount of time an engine spends at 5000 rpm is trivial. It is out beyond 3 standard deviations.

Full on racing is different. Occasional autocross and track events would only skew that distribution minimally. The reality is engines don’t operate at 5000 rpm much at all despite what we think as enthusiasts.

Likewise at 5000 rpm the engine fan is providing the bulk of cooling. Not the oil cooler.

The worst case for cooling is when engine speed (ie fan speed) is low and load is high. This is usually in town at idle or when repeatedly accelerating away from traffic lights. On the highway, where aerodynamic loading becomes significant, you’ll find that your engine speeds are more like 3000-3500 rpm.

So ask yourself why would you be concerned if the external oil cooler had some minor bypass at 5000 rpm?