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Location:
tas
Registered:
June 2002
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 After a hard drive, My oil cooler is COLD!
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Mon, 04 October 2004 12:19
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Yes i just had a night of hard driving, after boosting the temp would rise from %40 to %50 on the temp guage, not really anything to worry about. But after i got home i thought i'd feel how hot the oil cooler was, to see that is was actually cooling my oil.
The oil cooler was complety cold! Shit this can't be good! I don't know how long it's been like this, i suspect ever since i got the car, becuase the temp would always rise abit after even a small boost, and it smells like burning hot oil when i open the hood. One thing I do know is that my turbo engine doesn't appreciate boiled oil! 
Since the oil cooler is cold the oil must not even be passing thru the oil cooler so it's blocked? If it's blocked then that's really bad as the oil has nowhere to go to lubricate the engine properly.
I would like to know if others have felt their oil cooler after driving, and if it's ment to be hot or cold? Maybe i'm worrying over nothing and it's cold becuase it really cools the oil that well? i doubt that very much tho.
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Location:
Brisbane
Registered:
June 2003
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Re: After a hard drive, My oil cooler is COLD!
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Mon, 04 October 2004 12:23
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is there any flow going through the cooler? Perhaps its blocked to the shithouse? it is meant to be hot trust me...
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Location:
tas
Registered:
June 2002
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Re: After a hard drive, My oil cooler is COLD!
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Mon, 04 October 2004 12:30
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It seems it can run like a normal 7mge with the oil cooler blocked, i read it has some valve and can run paralel to some other oil line.
But yeah i'd of thought that the cooler would be burning hot if it were actually doing it's job! Thanx for confirming that they are supposed to be hot, must be blocked to the shithouse.
Are they hard to remove?
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Location:
Mildura
Registered:
May 2002
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Re: After a hard drive, My oil cooler is COLD!
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Mon, 04 October 2004 13:09
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They are a bypass cooler only not full flow.
Without looking in the manual I couldn't say what the opening pressure is for the relief valve but you would have to overcome that before any oil would reach it.
Marty
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Location:
Lost in the K hole
Registered:
May 2002
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Re: After a hard drive, My oil cooler is COLD!
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Mon, 04 October 2004 13:12
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PLUS - consider the piss weak flow that this valve offers - the cooler doesnt see a great deal of volume whatsoever and cools it at a fantastic rate - thus it stays pretty damn cold.
i know my cooler is working, yet even after a flogging, is cold to touch. try feeling the fittings and end tanks though - i bet these are at least a little warm
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Location:
south east - melbourne
Registered:
March 2004
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Re: After a hard drive, My oil cooler is COLD!
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Mon, 04 October 2004 22:58
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damn does the 1g-gte engine have an engine oil cooler as well , if so where is it located i know its got a cooler for the power steering thats all i know , i was planning on fitting an oil cooler for the car but if its alredy got one then i dont have to
cheers
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Location:
tas
Registered:
June 2002
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Re: After a hard drive, My oil cooler is COLD!
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Tue, 05 October 2004 12:15
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ok took it for another drive today, checked the temprature of the oil lines going to the cooler and there both cold! so it sounds to me like the oil valve isn't opening to let oil into the cooler.
TD42T your very on the ball with what you said, that valve isn't opening up, is it a spring type pressure valve?
ed your right, those oil lines to the cooler are way to small to work effectivly. No point upgrading the actual cooler itself like alot of other 7mgte owners are doing, as it doesn't get enough flow to begin with. 
Indian, the 1g-gte is a a tubo motor, so it should have an oil cooler, but that is just a guess, check for a mini radiator at the front somewhere and see if it has oil lines going back to the sump/oil filter area.
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Location:
south east - melbourne
Registered:
March 2004
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Re: After a hard drive, My oil cooler is COLD!
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Tue, 05 October 2004 22:57
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cheers dingaling , iil chek that and see but i think it doesnt have one as ihave looke at the fron section before , but maybe its hidden somewhere
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Registered:
June 2004
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Re: After a hard drive, My oil cooler is COLD!
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Tue, 05 October 2004 23:39
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indian,i dont no that you would call it a cooler but the oil filter housing is water cooled on the 1G.
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Location:
south east - melbourne
Registered:
March 2004
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Re: After a hard drive, My oil cooler is COLD!
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Tue, 05 October 2004 23:46
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whoa suprise suprise , thats oughts cool it then shouldnt it ,
what other coolers do these 1g-gte engine have i know for sure theres a spring like cooler thing for the power steering
is thereany other way to cool the engine oil in a 1g-gte engine i was looking for an oil filter relocator and an oil cooler but couldnt find both
also im running the green coolant as the car came with it , will that affect it in anyway
cheers
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Location:
Lost in the K hole
Registered:
May 2002
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Re: After a hard drive, My oil cooler is COLD!
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Wed, 06 October 2004 00:11
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dude, im not talking about the calibre of the LINES, im talking about the size of the outlet fitting itself... have you ever seen one? theyre TINY
if you get a chance, take a hose off and have a look at the outlet of the bypass valve...
the hoses themselves are fine
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Location:
tas
Registered:
June 2002
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Location:
Mildura
Registered:
May 2002
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Re: After a hard drive, My oil cooler is COLD!
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Wed, 06 October 2004 09:42
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Being a bypass setup you would have to run for a fair amount of time with the oil pressure above the relief valve pressure for it to heat the cooler.
Easiest thing to do would be drop the feed line off and see if the oil in it is warm or not.
Also depends on engine condition, you may not have enough oil pressure to open it.
Marty
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Location:
Montrose, VIC
Registered:
May 2002
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Re: After a hard drive, My oil cooler is COLD!
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Wed, 06 October 2004 14:49
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If you like to give your car a good hard time, ditch the standard cooler and fit a proper full flow cooler; if the engine's nearly rooted anyway, and you don't drive it that hard, then don't stress about it too much.. 
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Location:
tallahassee FL usOFa
Registered:
May 2002
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Re: After a hard drive, My oil cooler is COLD!
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Wed, 06 October 2004 15:23
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first, what is it? an AE86 4AGE with the factory setup???????
if someone stretched or shimmed that secondary relief valve in the filter sandwich plate, it will never flow to the cooler since the main/original pressure relief is lower. it HAS to be the lower of the two to work at all.
or your bearings & pump aren't in condition to be capable of putting out enough pressure any more.
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Location:
south east - melbourne
Registered:
March 2004
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Re: After a hard drive, My oil cooler is COLD!
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Wed, 06 October 2004 22:53
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check out the tsrm web site they have the oil cooler repai proceduere
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Location:
tas
Registered:
June 2002
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Re: After a hard drive, My oil cooler is COLD!
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Thu, 07 October 2004 02:16
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TD42T: you could be right, not enough pressure to open the relief valve, maybe i'm not driving it hard enough  maybe the 7mgte is alot tougher then i thought. But the thing is after a long drive (ie a few hours of constant driving) the car feels tired, lacks power and smells of hot oil after i've pulled up.
mrshin:Yeah i like to go WOT a few times a day, but i always let the engine warm up, and cool down after every drive, I'd like it to last until i get a 1jz, actually i want the 7mgte to help pay for the 1jz, so i should upgrade the oil cooling system anyway. If you have anything in particular that you can recomend let me know.
allencr: 7MGTE supra factory setup. But what your saying sounds like it would apply to my engine aswell. Maybe my choice of oil is the problem, it's possible? my oil pressure guage goes up near the max when i give it gas, so i know i at least have pressure, but i can't translate from mmHg to PSI(dash has mmHg for measurement)
Indian: yep i already checked the TSRM, They really don't show you much, just how the cooler is plumbed in with the system, how it comes apart. no trouble shooting section that i could find, or testing procedures etc.
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Location:
Lismore, NSW
Registered:
February 2003
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Re: After a hard drive, My oil cooler is COLD!
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Thu, 07 October 2004 07:50
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Ive read somewhere that the cooler only gets oil at idle thus when flogging the car no oil goes thru the cooler??? Is this correct? Also how can you increase the cooling effeciency of the standard unit eg modifying the hole size on the bypass valve etc?
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Location:
Montrose, VIC
Registered:
May 2002
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Re: After a hard drive, My oil cooler is COLD!
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Thu, 07 October 2004 11:07
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Recommend? Go buy an external filter kit, a proper full flow oil cooler, and the (expensive!) hoses+fittings. Any 'speed shop' worth anything at all will have this stuff on offer, although you might need to visit Pirtek/Enzed etc. for the hoses+fittings.
Then be amazed at how much faster your car goes, due to the lightness of your wallet 
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Location:
cambo
Registered:
May 2002
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Re: After a hard drive, My oil cooler is COLD!
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Thu, 07 October 2004 11:09
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if im correct in my way of thinking i THINK there may be a lot of mis-information floating around here.
from my understanding the valve that controls oil to the cooler is NOT a pressure relief valve, rather a THERMOSTAT which is activated when the temperature of the oil returning to the sump is at a certain temperature, so as not to constantly be cooling oil as you want it at a certain operating temp not always cold.
i could be wrong but this is my belief.
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I supported Toymods
Location:
sydney.au
Registered:
August 2002
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Re: After a hard drive, My oil cooler is COLD!
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Thu, 07 October 2004 11:51
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for oil
dont use crappy fittings
they are under pressure and will not hold
i would only use earls for my oil setup
greddy sells nice oil filter relocator + cooler kits for heaps of different engines.
otherwise speak to earls!
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Location:
cambo
Registered:
May 2002
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Re: After a hard drive, My oil cooler is COLD!
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Thu, 07 October 2004 11:57
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thats for aftermarket coolers that take a pressurised feed from in-between the block and filter. for the stock toyota setup there is very little if any pressure.
but yes if you go aftermarket you want a good setup cause if theres a problem youll lose all oil pressure as opposed to if there was a leak on the stock toyota setup, would take a while to notice an effect.
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Location:
Montrose, VIC
Registered:
May 2002
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Re: After a hard drive, My oil cooler is COLD!
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Thu, 07 October 2004 12:20
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Even my half dead old 4AG with it's piss weak bypass cooler gets it nice and warm all the time, so probably no thermostart in there - that's my guess, I've never really looked into the stocky setup!
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