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04-09-2015, 03:08 PM
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#1 |
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Registered User
Join Date: Jan 2015
Location: Hudson, fl
Posts: 118
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Oil pressure gauge,
Should there be air bubbles in the small oil line that goes between the engine and the gauge at the dash. I just put in a new line and didn't know how tight to make it. Is there away to get air bubbles out,,,,I'll check again to make sure there is none in the line. Just want to make sure I get the correct pressure reading. At 2000 rpm,,,I'm carrying about 25lb of pressure,,,pressure is steady and rises with increased rpms. The old line was leaking at the engine and was, lord knows,,,,how old,,,LOL,,,,,thanks for the help,,,Bill
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04-09-2015, 03:12 PM
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#2 |
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Senior Member
 
Join Date: Mar 2012
Location: Chesapeake, Va
Posts: 1,275
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Re: Oil pressure gauge,
since it is only under pressure with the engine running , it will get air bubbles in it from shutting down the engine and starting it back up
normal standards are 10 psi for every 1000RPMS so I think you are okay
__________________
Mike 72 C-10 Cheyenne off frame resto and Upgraded to 4 wheel disk, Tilt, Dakota Digital Dash / Rear slider. 421 SBC / TH350 3000RPM Stall Progression Ignition /Holley 750 DP/3:73 gear Eaton Limited Slip unit / 2 1/2 exhaust glasspacks 
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04-09-2015, 03:24 PM
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#3 |
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Registered User
Join Date: Jan 2015
Location: Hudson, fl
Posts: 118
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Re: Oil pressure gauge,
Thanks for your help,,,,I'm running a 350 with 305 heads,,,hot cam,,,,runs great,,,,loves the gas,,,LOL. Just bought in Jan.,,,,replaced the oil pan/gaskets,,,no more leaks.
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04-09-2015, 06:12 PM
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#4 |
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Registered User
Join Date: May 2008
Location: Mesa, AZ
Posts: 281
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Re: Oil pressure gauge,
If I understand the physics or fluid power, it should not matter. Push 30 PSI of oil into a volume with trapped air, the trapped air will compress until it's producing 30 of pressure.
Having said that, what about brakes? Notice I said the trapped air will compress? Brake hydraulics are more about moving fluid a certain distance than they are about pressure. Yes, pressure does build in the line, but we don't care what pressure is in the line, as long as we move the wheel cylinders/calipers an expected distance! Regards, Mike
__________________
I own 3 classic vehicles. 1971 LWB C10 Deluxe. 1974 VW Super Beetle. 1971 VW Fastback. The C10 and the Super Beetle run, the Fastback is just not there yet! Please visit my Super Beetle and Fastback profile on TheSamba. |
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04-09-2015, 06:16 PM
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#5 | |
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Registered User
Join Date: May 2014
Location: PA
Posts: 1,417
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Re: Oil pressure gauge,
Quote:
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1967 C10, LWB, 250, Powerglide, PS, PB, 3/4 STATIC DROP |
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04-09-2015, 06:29 PM
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#6 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Oil pressure gauge,
if you can see air does that mean you don't have a copper tube to carry the oil in?? bad bad move if you've got the plastic
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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04-09-2015, 06:52 PM
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#7 |
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Registered User
Join Date: Oct 2008
Location: Marianna Arkansas
Posts: 7,257
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Re: Oil pressure gauge,
The air bubbles are normal no worries there. I think you might want to consider changing to the copper type line. Just to avoid the hot oil shower for your legs if it ruptures, although I never had that happen or know of it happening to anybody I know. The safer the truck and our hobbies in general are the more enjoyment we can get from them. Jim
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