Lo oil pressure

Q&A regarding engines, turbos, and intercoolers and power upgrades

Re: Lo oil pressure

Postby Robin-evo6rs2 » Wed Dec 10, 2014 5:01 am

Its on a small leen...
bottom of the sump in vertical.

For now I only took the sump off.
bearings look fine.

I got a 5s oil pump coming. .
going to try that to.
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Re: Lo oil pressure

Postby klue » Thu Dec 11, 2014 2:20 am

make sure to use the 3sgte oil pump gear, or you will have to change you belt
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Re: Lo oil pressure

Postby Mafix » Fri Dec 19, 2014 6:23 pm

check the relief spring assembly in the old pump. i'd guess it has debris holding it open.
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Re: Lo oil pressure

Postby Robin-evo6rs2 » Tue Dec 23, 2014 5:55 am

I ordered a belt from a 205..

Should come in today.

Hoop to have her up and running this evening :)

Going to pull the old pump apart to see if I can find something.
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Re: Lo oil pressure

Postby Robin-evo6rs2 » Tue Dec 30, 2014 5:11 pm

It have not worked as I hoped. .

got a 36 psi now at the most.
its @ 25 on idle... so that more then fine. ...

just as soon as I rev the engine its got 35/36psi @2k rpm.... that where it stays.

Bearings look fine.. so since of waer..
did not messuage them.

how to go from now?
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Re: Lo oil pressure

Postby MWP » Wed Dec 31, 2014 4:38 am

Mafix wrote:check the relief spring assembly in the old pump. i'd guess it has debris holding it open.


Did you check this?
I have heard of the oil relief valves getting stuck open.

BTW... are you sure your oil pressure gauge is accurate?
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Re: Lo oil pressure

Postby Robin-evo6rs2 » Wed Dec 31, 2014 6:46 am

Im not using the relief valve eny more.

Same goes for the stock water/oil cooler.

Instead I have a sandwich plate with a 80 degrees thermosat going to a remote filter and 16 row cooler

yes . I trust the meter
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Re: Lo oil pressure

Postby Robin-evo6rs2 » Wed Dec 31, 2014 9:04 am

Could the thermostat throwing oil in the relief valve return when opening?

I mean when the oil is cold I have 95psi! On idle. ..
dropping to 75 psi after a 10min drive. ...

now I think the pressure drops when the thermostat opens???

How does the relief valve get rid of the excessive oil?
Could I blok that?


It must go wrong there...
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Re: Lo oil pressure

Postby Mafix » Wed Dec 31, 2014 3:38 pm

you don't seem to know what i'm talking about with the relief spring. it's in the oil pump, not the filter housing. it is what dictates the oil pressure.
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Re: Lo oil pressure

Postby Robin-evo6rs2 » Wed Dec 31, 2014 5:35 pm

Its got a brand new 5s oil pump now.
Only done the test miles now.

And no.. I did now check the one in the new pump or the old one.
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Re: Lo oil pressure

Postby Robin-evo6rs2 » Thu Jan 01, 2015 7:02 pm

should i have opened up the new pump to check?
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Re: Lo oil pressure

Postby MWP » Sun Jan 04, 2015 10:01 am

Yup, its always a good idea to make sure it moves freely.
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Re: Lo oil pressure

Postby Robin-evo6rs2 » Sun Jan 04, 2015 6:29 pm

I connected the line on the remote filter the wrong way arround :oops:


got 50 psi hot on idle and 75 with rev's :)
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Re: Lo oil pressure

Postby MWP » Mon Jan 05, 2015 2:36 am

Hot idle is 50psi?
Is that measured at the head?
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Re: Lo oil pressure

Postby Robin-evo6rs2 » Mon Jan 05, 2015 5:37 pm

40psi on the stock oil pressure sensor location.
Idle.. with 80 degrees oil temp.
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