4agte oil pressure

[ke_25]

hey just woundering if any one could help us know what oil pressure there 16v turbo 4age is running? have just purchased a 500kpa sender and guage, but thinking this could be to low as it is only teh equivalent to around 72psi?1

help appreciated. cheers

[matt dunn]

I run a 5 bar, or 500kpa sender in my 4agte/7agte.

[IH8TEC]

i have about 25-30psi on idle,

60-65 just cruising

and 70-80 when thrashing it

[ke_25]

oh ok so i should be ok then, itl just read maxd out when giving it a bit of a go and just hope for best isnt overly high.

i guess low pressure is more to be woried about?

[IH8TEC]

moreso yeah, but too much pressure can be bad as well.

[ke_25]

oh ok thanks, might look into a new guage then maybe, how far over is to much pressure? or dies it all depend

[matt dunn]

oh ok thanks, might look into a new guage then maybe, how far over is to much pressure? or dies it all depend

I doubt you get over 80psi when the oil is really hot,

cold oil gives more pressure, hot oil gives less.

[ke_25]

oh ok sounds good, what about water temps? roughly? when giving it a good go? sorry about stupid questions, wernt cheap guages! just want to get right as car wont be runnign for a while

[l1ttle_d3vil]

i've installed a cheap autogauge (sh!tty, I know, but it was cheap!) 100psi oil pressure gauge on my 4agte and hooked it up but its reading off the clock, even when just cranking or idling

gauge is brand new and had the original sender etc.

does it sound like a faulty gauge or maybe wired incorrectly, not earthing properly etc?

cheers

[evil_si]

is it reading off the dial with the key on?
guages will read high if the signal wire is earthed

[l1ttle_d3vil]

yeah, as soon as the ignition is switched on it will go off the dial.

will recheck the wiring then, i put it together in a bit of a rush

[evil_si]

yea sounds like you have fuked up the signal wire, my guess is you have the earth and signal wires around the wrong way or both going to earth

[AE86fan]

You are probably using a late model sender unit which is just on or off to power a oil pressure warning light on the dash. You need a variable pressure sender from a car with a factory oil pressure guage, I think early Fxgt had them, ae86 does.

[FXGTV]

You are probably using a late model sender unit which is just on or off to power a oil pressure warning light on the dash. You need a variable pressure sender from a car with a factory oil pressure guage, I think early Fxgt had them, ae86 does.

qft. my '89 ae92 fxgtv had one.

[l1ttle_d3vil]

gauge is brand new and had the original sender etc.

am yet to get back to my car to check for problems...

[Adydas]

I read 79psi peak highest.. so you seems fairly on the ball.. as said oils thicker when hot to yea..

[rollaholic]

oh ok sounds good, what about water temps? roughly? when giving it a good go? sorry about stupid questions, wernt cheap guages! just want to get right as car wont be runnign for a while

water temp depends a bit on how your system is setup, most standard cars (generally) operate at somewhere between 80 and 90 degrees C. i cant imagine you'd want it going much higher than 95 or 100, anything past that is asking for trouble imo - though some of the race car guys might have more solid info for you in that respect.