IntegraTypeR

iTrader: (1)

hey guys,
what are the symptoms of having 38-40psi of oil pressure at idle (750 to be exact) and thats after warm up? what could be the cause? could be a clogged crank breather? bad vac? bad oil pressure gauge? bad timing?....etc

let me hear it from you experienced guys!

non-VTEC

you sure your oil pressure gauge is working correctly?

15-25psi at idle hot is about average/normal......

IntegraTypeR

iTrader: (1)

they gauge is electrical and does a check sequence before showing a reading on the instruction if it perform that sequence that it should be in good working condition! i will try another gauge!

coneheadsracing

How warm? As in how long have you been driving. Warm on your water temp guage, can happen at like 120 degrees or something like that. I read it in the instructions for jackson racing. Also, it takes longer for your oil to get up to that point. Now if you've been driving for 20 minutes and your still getting high oil pressure, then i don't know.

What is the pressure at, 6000 rpm full throttle, and 3000 rpm cruising?

IntegraTypeR

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by coneheadsracing &raquo;</TD></TR><TR><TD CLASS="quote">How warm? As in how long have you been driving. Warm on your water temp guage, can happen at like 120 degrees or something like that. I read it in the instructions for jackson racing. Also, it takes longer for your oil to get up to that point. Now if you've been driving for 20 minutes and your still getting high oil pressure, then i don't know.

What is the pressure at, 6000 rpm full throttle, and 3000 rpm cruising?</TD></TR></TABLE>

i didnt drive the car yet...this is a fresh built....just trying to figure out those bugs before i go out and do the break in....how warm? well it sits there idling with coolan temp at 190 F and IAT at 84F
so you think after i drive it the oil pressure will drop? cause the oil has to break up or something?

xxxmikenicexxx

Where are you located? If youre in a winter climate right now, that could be part of the problem. It would take a while for the oil to really heat up, well, depending on weight, and synthetic vs. dino...I noticed quite a bit higher pressure when I switched to synthetic..and also during winter months. I wouldnt worry too much about it, unless it persists after a bit of driving. If it were at 60-80 psi at idle, then I would be worried, that would likely be an oil pump pressure relief problem, or on the other hand, being too low wouldnt be good either. I would take it for a quick drive around the block to warm everything up, and let us know what the outcome is and we can help you from there

IntegraTypeR

iTrader: (1)

well am overseas and oil viscosity am using is 20w40 which is 3,000 miles type...well am using this for break in and then change for something better. Where i live our oil doesnt contain antifreeze or something since it NEVER snows here and temps never go below 77F!


Modified by IntegraTypeR at 9:26 PM 1/25/2007

IntegraTypeR

iTrader: (1)

i could say we are during the winter time now but i dont think 70-95 F is compared to be cold in the US...our winter here is compared to be hot in some states in the US....and by the way the oil am using is NON-synthetic and i didnt drive it yet since am worried to break something and decided to be patient and ask before i do anything....when i crank the engine when its cold it idle with an oil pressure of ~60-80 psi and comes down gradually to 40, but after three heat cycles the pressure kinda flactuate from 38-40! even though the engine sounds smooth

i have a greddy oil pressure gauge which i attended to sell, but now i think i should try it to compare gauge values....the Greddy is in kg/cm2 so i should expect 0.7-2.1kg/cm2 after warm up on the Greddy right?


Modified by IntegraTypeR at 9:24 PM 1/25/2007

mike1114

iTrader: (1)

I get like 40psi+ at idle after warm up, my idle is around 1100rpms. 60-80F outside.

3000rpms I have 60psi+ ususally.

I have an external oil cooler and most say usually there is a pressure drop when you add an oil cooler. I noticed a pressure gain, not that much though.

IntegraTypeR

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike1114 &raquo;</TD></TR><TR><TD CLASS="quote">I get like 40psi+ at idle after warm up, my idle is around 1100rpms. 60-80F outside.

3000rpms I have 60psi+ ususally.</TD></TR></TABLE>

where did you build your block? and did you disable your IACV? asking cause i noticed your idle is high!

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike1114 &raquo;</TD></TR><TR><TD CLASS="quote">I have an external oil cooler and most say usually there is a pressure drop when you add an oil cooler. I noticed a pressure gain, not that much though.</TD></TR></TABLE>

my JDM b16 block came with no oil cooler and i fit a stock one cause i always wanted oil temps to be controlled! would a stock oil cooler cause this oil pressure gain you think?

turbotime

i always saw 25-30psi at idle and 60+psi cruising, i think it got around 75-80psi at WOT

this is NORMAL. lower is not good.

IntegraTypeR

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbotime &raquo;</TD></TR><TR><TD CLASS="quote">i always saw 25-30psi at idle and 60+psi cruising, i think it got around 75-80psi at WOT

this is NORMAL. lower is not good.</TD></TR></TABLE>

if u dont mind can you tell me more about your setup? like who build it, catchcan/stock crank breather and oil type?

i understand from you that what matters that my oil pressure shouldnt exceed 80psi at WOT? well if it idles at 40 then WOT could be ~100

i called around and some poeple are getting 10-15psi of oil pressure at idle!

turbotime

oil pressure is basically [not completely] a function of how tight ur bearings are. Bearings in proper spec should produce anywhere from 25-40psi at idle, and anywhere from 60-100psi WOT after full warm.... 100psi is higher than i would deem good but its possible.

My last build was built and blueprinted at a local machine shop, running open breather catchcan off the block fittings. Oil relocation kit, s200 oil filter, 10w30 oil.

Fully Warm idle 30-35psi and cruising would be between 60-85psi based on rpm. pretty much 80-85psi after 4krpms- and this is how it should be.

Pressures of 10-15psi are pretty damn low. Could just be very thin oil... or very worn bearings.

Everywhere ive read 25-40psi idle and 60-85psi warm cruising is spec. I was having some pressure issues over teh summer so i had to do a lot of readin on the subject....

mike1114

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbotime &raquo;</TD></TR><TR><TD CLASS="quote">oil pressure is basically [not completely] a function of how tight ur bearings are. Bearings in proper spec should produce anywhere from 25-40psi at idle, and anywhere from 60-100psi WOT after full warm.... 100psi is higher than i would deem good but its possible.

My last build was built and blueprinted at a local machine shop, running open breather catchcan off the block fittings. Oil relocation kit, s200 oil filter, 10w30 oil.

Fully Warm idle 30-35psi and cruising would be between 60-85psi based on rpm. pretty much 80-85psi after 4krpms- and this is how it should be.

Pressures of 10-15psi are pretty damn low. Could just be very thin oil... or very worn bearings.

Everywhere ive read 25-40psi idle and 60-85psi warm cruising is spec. I was having some pressure issues over teh summer so i had to do a lot of readin on the subject....</TD></TR></TABLE>

all my readings are the same. NO OEM oil cooler on my setup. Oil weight has a lot to do with how much pressure you'll get also. I run 20W-50.

turbotime

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike1114 &raquo;</TD></TR><TR><TD CLASS="quote">all my readings are the same. NO OEM oil cooler on my setup. Oil weight has a lot to do with how much pressure you'll get also. I run 20W-50.</TD></TR></TABLE>

i run the oem cooler, why dont u?

IntegraTypeR

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike1114 &raquo;</TD></TR><TR><TD CLASS="quote">all my readings are the same. NO OEM oil cooler on my setup. Oil weight has a lot to do with how much pressure you'll get also. I run 20W-50.</TD></TR></TABLE>

thats the oil am gonna use after my break in isnt 20w50 a 6-8k mile oil type? or am mistaken its probably 30w50? both oil type am talking about arent synthetic type where i live