AQ171, which oil pressure gauge is needed (bars)

[Myrland]

Hi!
I am new to inboard motors, and have a AQ171 in my boat.
I need to install an aftermarket oil pressure gauge, as I have removed the old volvo gauges.
Wema has oil pressure gauges in the following models:
0-5 bar (75 psi) and 0-10 bar ( 145psi)
I have read the workshop manual for the AQ171, and can't find anything on what the oil pressure should be.
Any help will be greatly appreciated.

 

[Bondo]

Ayuh,..... Welcome Aboard,..... The rule of thumb is, 10 psi per 1,000 rpms,.....
So the 1st gauge,....

 

[Scott Danforth]

unless the stock spring is changed in the PRV on the oil pump, the 0-5 bar gauge will be fine.

 

[Myrland]

Thank you!