High oil pressure?
Thread Starter
Drifting
Joined: Apr 2001
Posts: 1,779
Likes: 6
From: LOS ANGELES CA.
High oil pressure?
I have a 2009,Z51,6 speed stick.I noticed my oil pressure at about 35-40MPH is at 60.Is this exceesively high? I believe it should be around 40.Any ideas?I am thinking the oil pressure gauge took a dump.Rod
Racer
Joined: Oct 2011
Posts: 304
Likes: 1
From: Chandler AZ
Need a little more info. What temp was the oil? What gear/rpm were you at/is that while accelerating? Personally, I don't think that's too high. As I've posted before, mine idles @ 65-70 cold (both 0W-30 and 0W-40), will run up to and just over 80lbs while warming up in normal street driving, and then will run @ 50-55lbs at an oil temp of @175-180 at highway speeds. Even at oil temps of @ 210-220 I've never seen oil pressure below 45lbs at idle.
I don't know if the previous owner shimmed the oil pump, but I know he was a damn fine mechanic and did the Katech cam, Comp Cam trunnion upgrade, and PSI valve spring upgrade right. I'd rather be running what some consider a bit higher than "normal" than low. There definitely seems to be a wide margin for what's considered normal when it comes to this subject. Lots of other threads on it.
I don't know if the previous owner shimmed the oil pump, but I know he was a damn fine mechanic and did the Katech cam, Comp Cam trunnion upgrade, and PSI valve spring upgrade right. I'd rather be running what some consider a bit higher than "normal" than low. There definitely seems to be a wide margin for what's considered normal when it comes to this subject. Lots of other threads on it.
Thread Starter
Drifting
Joined: Apr 2001
Posts: 1,779
Likes: 6
From: LOS ANGELES CA.
Particulars
Need a little more info. What temp was the oil? What gear/rpm were you at/is that while accelerating? Personally, I don't think that's too high. As I've posted before, mine idles @ 65-70 cold (both 0W-30 and 0W-40), will run up to and just over 80lbs while warming up in normal street driving, and then will run @ 50-55lbs at an oil temp of @175-180 at highway speeds. Even at oil temps of @ 210-220 I've never seen oil pressure below 45lbs at idle.
I don't know if the previous owner shimmed the oil pump, but I know he was a damn fine mechanic and did the Katech cam, Comp Cam trunnion upgrade, and PSI valve spring upgrade right. I'd rather be running what some consider a bit higher than "normal" than low. There definitely seems to be a wide margin for what's considered normal when it comes to this subject. Lots of other threads on it.
I don't know if the previous owner shimmed the oil pump, but I know he was a damn fine mechanic and did the Katech cam, Comp Cam trunnion upgrade, and PSI valve spring upgrade right. I'd rather be running what some consider a bit higher than "normal" than low. There definitely seems to be a wide margin for what's considered normal when it comes to this subject. Lots of other threads on it.
:f lag:
Racer
Joined: Oct 2011
Posts: 304
Likes: 1
From: Chandler AZ
Well, I'm no expert, but have been around and working on cars for 30+ years. IMHO, you're ok. A bit higher than average, maybe, but I wouldn't think it's excessive. Any idea how high it would go if you ran it up to 4-5K rpm's at that oil temp? Was watching another forum members in-car track video yesterday, and at oil temps of 220-245 degrees, if I remember right, he was running @ 55-65 lbs and was nearly always running over 4K rpm.
