So I'm in the middle of my build and I recently bought a digital AEM Oil Pressure Gauge. I didn't know it had a range, but I ordered the 0-100 PSI one, but it looks like they have a 0-150PSI.

From what I've heard, the normal oil pressure is at 50psi when around 3000rpms, but my question is, am I fine with the 0-100 PSI gauge I ordered? Steve Kan said that I need something that goes up to 200 PSI because a 13b runs around 150 PSI?

 

No. You'll need the higher range. At least the 0-150....though I've never seen 200 psi. And 50 psi at 3k is minimum.

 

The factory gauge goes to 120 psi. 150 will be fine, not sure why you'd ever need a 200 psi gauge.

 

0-150 is what you need. Upon warm-up the pressure will be @125 until warm. depending on rpms


later

 

Yea I don't know Rich, I talked to Steve Kan and he said that I need a gauge for 200psi+, don't ask me.

Anyway, I already changed my order for the 0-150psi gauge part# now. Thanks guys.

 

The reason a 200-psi gauge might be good is that repeatedly running a gauge to or close to its max can sometimes change the gauge calibration or fatigue it, if it's not a very good gauge.

 

I don't think that would apply to a digital gauge, such as the one under discussion.

 

Maybe not, but digital gauges still have mechanical pressure senders/transducers (pressure is converted into voltage by a strain-gage or similar mechanism) which still can have the same problems with overload/over-pressure. In our fatigue and characteristics lab at Bridgestone research, we ran into this type of problem quite often.

Dave