RB25DET NEO oil pressure relief valve

[Samyr34]

Hi just wanting an opinion. Purchased a rb25det neo. Doing a freshen up on the motor before installing and was told from the mechanic that upon removing the oil cooler housing that the oil pressure relief valve ball bearing fell out. Just wondering if this maybe being loose in the housing would have caused damage to the motor. Or caused oil pressure problems that would affect other components. Engine was running when removed. Has anyone experienced this. Photo uploaded is to show the part that was affected 

Edited October 3, 2022 by Samyr34

[Ben C34]

That's a bypass in case the filter is blocked.

Falling out seems difficult/ impossible.

 

What is the freshen up you are doing?

[Samyr34]

Thanks mate, mechanic was abit vague when he told me so trying to do some research to hope it wasn’t going to be chaos. Just doing a nitto gasket, studs. Light head work cams and valve springs head drain. N1 pump with gears. New gaskets and reseal. Was opting to put a external oil cooler in it as I’m planning to do causal track days in it so turfing the factory oil cooler assembly anyway 

[Ben C34]

I would personally save the head work and cams money and put that towards bearings.

Cam always fo a head later, or never.....

[Samyr34]

Yeah I agree with you I was under the impression it was going to get done with everything else but abit of miss communication with the mechanic and the motor was reassembled without, which pissed me off a little but what can you do engine is pretty much back together 

[joshuaho96]

If you don't block it off or replace the bypass valve you will just bypass the oil filter entirely. The purpose of that relief valve is to pop open if the oil filter clogs.