Oil pressure
Tuned
Joined: Dec 2004
Posts: 340
Likes: 8
From: Rock Hill, SC
I had one build where the bearing clearance was within spec range, but on the tight side. I had a high volume oil pump and the pressure was so high I had to get a liquid filled OP gauge that read up to 150psi. I also had to use the Fram heavy duty filter because it would swell up the standard over the counter ones and leak. It was idling at about 75 psi and would go as high as 120 psi at higher rpm.
I had the crank ground and went loose on the clearance to solve the problem.
Fleet Mechanic
Joined: May 2001
Posts: 1,396
Likes: 4
From: Cupertino
I had one build where the bearing clearance was within spec range, but on the tight side. I had a high volume oil pump and the pressure was so high I had to get a liquid filled OP gauge that read up to 150psi. I also had to use the Fram heavy duty filter because it would swell up the standard over the counter ones and leak. It was idling at about 75 psi and would go as high as 120 psi at higher rpm.
I had the crank ground and went loose on the clearance to solve the problem.
I had the crank ground and went loose on the clearance to solve the problem.
Lead Driver
Joined: Aug 2003
Posts: 7,592
Likes: 10
From: **** hole San Jose ca.
I put a 87 model 5.0 roller motor in my 68 F-100. I used a HEI style distributor I bought off e-bay. Running an Edelbrock carb. At first everything was great, oil pressure at first start was 80 pounds, once it warmed up it was 60 pounds, stayed about 45 pounds idling. Now about a 1000 miles later it cranks at about 50 pounds cold, goes to about 25 or 30 pounds hot and idles at nearly zero. Couple of guys have told me its the gear worn out on the dist. causing it, that it's not compatible with the roller cam. Anyone ever heard of this?
I do have oil & coolant warning idiot lights if oil psi drops below 17psi and if the coolant gets up to 210 the light comes on. And none of the warning lights came on so, I know the gauge is off
My oil psi at started up has always been about 75-80psi cool motor depending on rpm it's running at. This new vdo gauge showed about 83-85psi with a cool startup. Warm idle showed 10psi.
Well todays weather was a bit warm at 94* while doing my test drive my manual SW coolant temp ga. ran at 185* but remove it so it's not installed right now just running the 12 volt coolant ga. was at 190* at 65 mph with my AC was going also. So 12v coolant temp was about right.
The VDO instructions says the gauges are with in 5%+- accuracy so bottom line is don't worry about the gauge reading or use a SW gauge
So the temp was about right.
Orich
sorry about the pics the flash was not needed.
Gas ga. not hooked up here as this was a few days ago.
Posting Guru
Joined: Aug 2012
Posts: 1,241
Likes: 2
From: Rockville, Ct.
Don't want to hijack, but Amen brother. I wanted to retire but it wasn't to be. I've always missed the outstanding qualities of friendship, comraderie, TRUST! and experiences. Doesn't exist so much in the " Real World "
Logistics Pro
Joined: Aug 2015
Posts: 4,093
Likes: 14
From: Lind, WA- Eastern WA
I agree with "CougarJohn" you probley never really had 80 PSI when it was new. (Unless it has a very high pressure oil pump installed). Unless you've developed some engine damage, the gauge must be messed up. I'm sure you would have noticed any new noises by now. Has the engine begun to run warmer than normal? Is it burning any oil? Any blue smoke following you?
Lead Driver
Joined: Aug 2003
Posts: 7,592
Likes: 10
From: **** hole San Jose ca.
I'm kind of discouraged with the VDO gauges now as mine have a little sticker on them made in India.
I've always used SW after market gauges since my teens yrs.
and was kind of attracted to the new white face gauges.
Plus the vdo's were at the time was the only Co. making the round 4" speedometers was white face ones. As I did not like the small 3.3/8" ones. That's okay for a tach tho.
I always though that the vdo were the top notch gauges, but now just switching over my dash cluster to an all 12volt vdo electric gauges with the oil gauge being so far off from the SW gauge binging 10lbs off at idle.
But, I know that the vdo oil gauge reads low so not going to worry about it.
Orich
I've always used SW after market gauges since my teens yrs.
and was kind of attracted to the new white face gauges.
Plus the vdo's were at the time was the only Co. making the round 4" speedometers was white face ones. As I did not like the small 3.3/8" ones. That's okay for a tach tho.
I always though that the vdo were the top notch gauges, but now just switching over my dash cluster to an all 12volt vdo electric gauges with the oil gauge being so far off from the SW gauge binging 10lbs off at idle.
But, I know that the vdo oil gauge reads low so not going to worry about it.
Orich
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