Oil pressure question?? - Page 2 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

feito · 08-07-2017, 06:54 PM

Quote:

Originally Posted by 72nismo

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 · 08-07-2017, 06:55 PM

Quote:

Originally Posted by 72nismo

If thats the case Im really screwed because bearing were replaced not to long ago. And I mean like in the last 4 months.

This is not a stock SR but a built SR if that makes any difference.

Who built it?

72nismo · 08-07-2017, 06:56 PM

Quote:

Originally Posted by feito

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 · 08-07-2017, 06:57 PM

Quote:

Originally Posted by hanzbrady

Who built it?

Friend of mine.

hanzbrady · 08-07-2017, 07:00 PM

Quote:

Originally Posted by 72nismo

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 · 08-07-2017, 07:02 PM

Quote:

Originally Posted by hanzbrady

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 · 08-10-2017, 03:46 PM

$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 · 08-10-2017, 03:47 PM

Quote:

Originally Posted by kyral

$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.

[email protected] · 08-10-2017, 04:43 PM

RIP Bearings, Crank & lubricating system.

taeisbeast · 08-10-2017, 05:33 PM

Quote:

Originally Posted by feito

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 · 08-10-2017, 09:28 PM

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

Kingtal0n · 08-12-2017, 07:06 AM

Quote:

Originally Posted by 72nismo

If thats the case Im really screwed because bearing were replaced not to long ago. And I mean like in the last 4 months.

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 · 08-12-2017, 11:47 AM

Quote:

Originally Posted by kyral

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 · 08-12-2017, 02:39 PM

Quote:

Originally Posted by taeisbeast

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 · 08-12-2017, 03:03 PM

Quote:

Originally Posted by jdm213

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 · 08-12-2017, 03:50 PM

Quote:

Originally Posted by Kingtal0n

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.

08-10-2017, 03:46 PM	#37
kyral Zilvia Junkie Join Date: Nov 2012 Location: wisconsin Age: 29 Posts: 447 Trader Rating: (7) Rides Gallery: kyral Feedback Score: 7 reviews	$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 __________________ The Game you lose haha

08-10-2017, 04:43 PM	#39
[email protected] Zilvia Member Join Date: Dec 2013 Location: Fontana, Ca Age: 31 Posts: 282 Trader Rating: (0) Feedback Score: 0 reviews	RIP Bearings, Crank & lubricating system. __________________ Competition Engines & Dyno Tuning. (951)708-1648 \| [email protected]

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08-10-2017, 09:28 PM	#41
72nismo Zilvia Junkie Join Date: Oct 2006 Location: So Cal Posts: 490 Trader Rating: (7) Feedback Score: 7 reviews	Will keep y'all posted when I have it checked out.