Oil pressure question??

[72nismo]

What should my SR20det oil pressure gauge be reading at idle at 1000rpm?
At the moment I'm getting a reading of 8psi.

Thanks
Luis

[taeisbeast]

wow, thats extremely low.

I've seen numerous numbers in the range of 35-40 psi

[kyral]

What should my SR20det oil pressure gauge be reading at idle at 1000rpm?
At the moment I'm getting a reading of 8psi.

Thanks
Luis

that's a bit low it should be about 10-12 at idle so maybe 13 at 1k

are you running atleast a 40w oil? maybe try a 50
but if that's the case you probably have some moderate bearing wear

definitely should not be 35-40 at 1k unless your engine is cold

[72nismo]

that's a bit low it should be about 10-12 at idle so maybe 13 at 1k

are you running atleast a 40w oil? maybe try a 50
but if that's the case you probably have some moderate bearing wear

definitely should not be 35-40 at 1k unless your engine is cold


I'm running 5-30 Mobil synthetic oil. And at idle its dropped as low as 6 and sometimes lower. When I give it gas it does go up to 30-40. But no higher.
I'm starting to think my oil pump might be bad.

[kyral]

I'm running 5-30 Mobil synthetic oil. And at idle its dropped as low as 6 and sometimes lower. When I give it gas it does go up to 30-40. But no higher.
I'm starting to think my oil pump might be bad.

Sr20det takes a 40weight not a 30 dude.. get that junk out.. and put some rotella 15w40 in

[72nismo]

Sr20det takes a 40weight not a 30 dude.. get that junk out.. and put some rotella 15w40 in

I will try that.
Thanks

[taeisbeast]

I run mobile devlac diesel oil

[kyral]

I run mobile devlac diesel oil

this is good too, as long as its atleast a 40 weight and not more than a 50 weight (which diesel usually is a 40w)

I can gurantee that using a 40w will help at the least if not correct this issue all together

[the shocker]

20w50, been running for years now. But really, should probably save for a rebuild

[kyral]

20w50, been running for years now. But really, should probably save for a rebuild

why would you go straight for a rebuild when an oil change will likely put this car back at healthy psi and is far cheaper?
Even if the car had sustained some damage or wear. it happens, itll still run and still provide a long service life if properly watched and maintained from there

Why does everyone on zilvia always recomend the most expensinve impractical route

[Kingtal0n]

what kind of gauge

[nisileighty]

20w50, been running for years now. But really, should probably save for a rebuild



I run 20w50 (VR-1) as well with no problems

[72nismo]

what kind of gauge

Running a glow shift guage. Then I bought an oil pressure tester to see if my gauge was bad but got same low numbers.

[Jefro240]

why would you go straight for a rebuild when an oil change will likely put this car back at healthy psi and is far cheaper?
Even if the car had sustained some damage or wear. it happens, itll still run and still provide a long service life if properly watched and maintained from there

Why does everyone on zilvia always recomend the most expensinve impractical route

X2. If your oil is heavily contaminated with fuel you will get a lower pressure reading. If your oil pump is on its way out, you will get a lower pressure reading. Even with 5w30 on a cold start up, you should be see 60+ psi.

Myself, some what recent oil change. Mobil 1 10w30. Cold start @ 1500rpm I see 80psi. As it falls down toward 1000rpm I see 60psi. Once fully warm @ 850rpm I see 18psi.

I'd start with an oil change... Either 15w40 or 15w50. If oil pressure is still low I'd get a new oil pump. Worst case, if you do need a rebuild, you will want a new oil pump anyway.

[72nismo]

X2. If your oil is heavily contaminated with fuel you will get a lower pressure reading. If your oil pump is on its way out, you will get a lower pressure reading. Even with 5w30 on a cold start up, you should be see 60+ psi.

Myself, some what recent oil change. Mobil 1 10w30. Cold start @ 1500rpm I see 80psi. As it falls down toward 1000rpm I see 60psi. Once fully warm @ 850rpm I see 18psi.

I'd start with an oil change... Either 15w40 or 15w50. If oil pressure is still low I'd get a new oil pump. Worst case, if you do need a rebuild, you will want a new oil pump anyway.

I will be changing oil this weekend. I hope that does it! Thanks !!

[72nismo]

X2. If your oil is heavily contaminated with fuel you will get a lower pressure reading. If your oil pump is on its way out, you will get a lower pressure reading. Even with 5w30 on a cold start up, you should be see 60+ psi.



Myself, some what recent oil change. Mobil 1 10w30. Cold start @ 1500rpm I see 80psi. As it falls down toward 1000rpm I see 60psi. Once fully warm @ 850rpm I see 18psi.



I'd start with an oil change... Either 15w40 or 15w50. If oil pressure is still low I'd get a new oil pump. Worst case, if you do need a rebuild, you will want a new oil pump anyway.

15w40 or 15w50 Is oil for Diesel engine. That will work on an SR? It won't damage engine????







Sent from my iPhone using Tapatalk

[72nismo]

Diesel oil huh? Hmmmm

[kyral]

Diesel oil huh? Hmmmm

yes run the diesel oil, a lot of people run it. I even run it in my brand new rebuilt ka24 but I use a 10w30 rotella cause ka's take 30-40 weight, but SR's take 40-50 and the weight is very important for oil pressure

[72nismo]

yes run the diesel oil, a lot of people run it. I even run it in my brand new rebuilt ka24 but I use a 10w30 rotella cause ka's take 30-40 weight, but SR's take 40-50 and the weight is very important for oil pressure

I will try it.
Thanks
Bam! Got it
https://imgur.com/a/XvIwm?s=sms

[Standard]

that's a bit low it should be about 10-12 at idle so maybe 13 at 1k


Where is this info coming from? Is this real life experience?

[hanzbrady]

Where is this info coming from? Is this real life experience?

FSM call for about 11 psi at 800RPM, now granted my engine isn't stock I figured I'd throw my 2 cents in. I run SAE 60 Dominator by Amsoil and see 12-15 PSI at idle and that's usually in 100+ degree weather.

[kyral]

I will try it.
Thanks
Bam! Got it
https://imgur.com/a/XvIwm?s=sms

youre killing me dude... fram filter really?

[smoked240]

I run 0w20 in my rebuilt rb. I see 6 bar at warm idle with 10w30 so I had to switch. About 2 bar at idle with 0w20 However this isn't an Sr so my info probably is useless.

[72nismo]

So I did the oil change. Warmed it up and my pressure went up to like 30s then when warmed up it ended at 10psi. Took it for a test run and got home and at 900 rpm and oil pressure was at 7psi. So gut feeling something wrong.
https://imgur.com/a/LmgNt?s=sms

[kyral]

I run 0w20 in my rebuilt rb. I see 6 bar at warm idle with 10w30 so I had to switch. About 2 bar at idle with 0w20 However this isn't an Sr so my info probably is useless.

0w20? youre crazy man. are you running super tight bearings?
and 2 bar at idle would be like 30 psi and 6 bar would be like 90psi one of which are very unlikely



OP are you rod knocking at idle?
You have some oil pressure so thats atleast a good sign
how are we testing oil pressure? like what setup are you using
youre only a couple psi off where you should be id say give the 50w a shot your bearing might just be worn a bit

[hanzbrady]

That's too low. Engine building rule of thumb is 10PSI per 1000RPM. Drain the pan and look for any metallic material. Also pull the oil pan and start checking the rods to see if any are knocking that you can't hear yet. If you still don't find anything pull the engine and then the main caps and check the main bearings. If you're lucky you haven't spun a bearing and you just need to replace the oil pump.

[72nismo]

That's too low. Engine building rule of thumb is 10PSI per 1000RPM. Drain the pan and look for any metallic material. Also pull the oil pan and start checking the rods to see if any are knocking that you can't hear yet. If you still don't find anything pull the engine and then the main caps and check the main bearings. If you're lucky you haven't spun a bearing and you just need to replace the oil pump.

I forgot to post this pic but this is what I've seen last couple oil changes. And at the moment car is not even driven much. Mostly just test driving it.

https://imgur.com/a/OFL8r?s=sms



Stop running the car, you spun a bearing. The engine is dead and absolutely will need a rebuild.

[72nismo]

Stop running the car, you spun a bearing. The engine is dead and absolutely will need a rebuild.

So because of the metal particles on the magnetic oil pan plug. That's a sign motor is dead?

[hanzbrady]

So because of the metal particles on the magnetic oil pan plug. That's a sign motor is dead?

Yes. That's bearing material.

[72nismo]

Yes. That's bearing material.

If thats the case Im really screwed because bearing were replaced not to long ago. And I mean like in the last 4 months. :picardfp:
This is not a stock SR but a built SR if that makes any difference.

[feito]

I forgot to post this pic but this is what I've seen last couple oil changes. And at the moment car is not even driven much. Mostly just test driving it.

https://imgur.com/a/OFL8r?s=sms
oh boy, you would think posting such important info from the start would have really helped, ha?
it dead, jim, dead...

[hanzbrady]

If thats the case Im really screwed because bearing were replaced not to long ago. And I mean like in the last 4 months. :picardfp:
This is not a stock SR but a built SR if that makes any difference.

Who built it?

[72nismo]

oh boy, you would think posting such important info from the start would have really helped, ha?
it dead, jim, dead...

I just did oil change yesterday. And last time I did an oil change I noticed some too. But when I clean it off its very thin metal shavings.

[72nismo]

Who built it?

Friend of mine.

[hanzbrady]

Friend of mine.

Well the only reason it'd be spitting out bearing material and having oil pressure issues would be improper assembly. Either clearances weren't set correctly or the engine had debris in it on start up from assembly.

[72nismo]

Well the only reason it'd be spitting out bearing material and having oil pressure issues would be improper assembly. Either clearances weren't set correctly or the engine had debris in it on start up from assembly.


I will have to look into that again and see what we figure out.
Thanks

[kyral]

$0.02 bearing material isn't magnetic
Holy shit I just looked at that picture. my jeez..
Somethings fucked my new rebuild didn't even have anywhere near that much on my plug. all the material I wiped off mine each oil change during break in wouldn't even begin to compare to that mountain of metal on yours

[hanzbrady]

$0.02 bearing material isn't magnetic

OEM isn't aftermarket is.

EDIT: Also on the chance that he running OEM bearings, any kind of metal in an engine is 100% worthy of a tear down.

[Juan@Fontananissan]

RIP Bearings, Crank & lubricating system.

[taeisbeast]

oh boy, you would think posting such important info from the start would have really helped, ha?
it dead, jim, dead...



This should of been the first thing posted along with the OP.

Holy crap though, lots of shavings

[72nismo]

Will keep y'all posted when I have it checked out.

[Kingtal0n]

If thats the case Im really screwed because bearing were replaced not to long ago. And I mean like in the last 4 months. :picardfp:
This is not a stock SR but a built SR if that makes any difference.

Sorry to say it but you are not the first to have a rebuilt SR fall apart.

It is very difficult to build one of these engines because very few people have the right tools or experience to do it proper.

A common theme is rebuild to sell. "Car for sale with rebuilt engine, only 200 miles" Yeah, avoid those.

[smoked240]

0w20? youre crazy man. are you running super tight bearings?
and 2 bar at idle would be like 30 psi and 6 bar would be like 90psi one of which are very unlikely

Nope I had a micro polish done on the crank and got +.001 bearings. I do however have an n1 pump and blocked an oil port on the block. I didn't change out the oil port orifice and that's the reason for such high pressures. I use 0w20 to compensate.
I broke the engine in on 15w40 and would see close to 8bar at Wot. With 0w20 I see 6ish at wot.

[jdm213]

wow, thats extremely low.

I've seen numerous numbers in the range of 35-40 psi

Actually 35-40 is too high for idle it should be 10psi-12 at 800 rpm at idle . His is obviously low having 8 psi at 1000 rpm

[taeisbeast]

Actually 35-40 is too high for idle it should be 10psi-12 at 800 rpm at idle . His is obviously low having 8 psi at 1000 rpm

Most definitely high for idle at 800rpm, Im aware - but I was referring to what he originally put before he edited.

[the shocker]

Sorry to say it but you are not the first to have a rebuilt SR fall apart.

It is very difficult to build one of these engines because very few people have the right tools or experience to do it proper.

A common theme is rebuild to sell. "Car for sale with rebuilt engine, only 200 miles" Yeah, avoid those.

It's really not that difficult to rebuild them. You cant be an absolute idiot like any other engine. Measure, measure and measure again. Make sure all your clearances are good and proper torque specs/procedures are done.