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Location:
Perth
Registered:
October 2003
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1JZ Oil Pressure Gauge & Water cooling
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Wed, 15 October 2003 05:08
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Got a few more questions:
1. Where can I screw a mechanical oil pressure gauge in? This will be the only one I use. e.g. no warning light or dash gauge. A picture showing the location would help alot.
2. Does the oil pump/filter setup have some sort of water cooling arrangement? I notice water inlet and outlet lines going into it.
3. What does the thingamybob next to the oil filter/pump do? It is gold in colour, has a green connector, and 2 vacuum lines to the manifold.
Cheers 
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Location:
Adelaide, SA
Registered:
May 2002
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Re: 1JZ Oil Pressure Gauge & Water cooling
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Wed, 15 October 2003 06:12
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1. I can't show you a picture, but we put the old 7m oil pressure in the passenger side of the block, above the engine number (sort of behind the air-con compressor if you got the motor out of a jza-70). Needed a couple of brass fittings to mount it at the right angle in the tiny space available. Works a treat.
2. The oil filter attachement does have water cooling where it bolts to the block. Most don't have seperate oil coolers, but I'd recommend you get one. Just get remote mount oil filter kit and cool the oil after it is filtered but before it goes back into the block. Plus then you can easily change oil filters with the cursing and screaming usually associated with doing it.
3. I can't remember 
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Location:
Perth
Registered:
October 2003
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Re: 1JZ Oil Pressure Gauge & Water cooling
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Wed, 15 October 2003 07:17
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lumpy: My oil filter comes a fair way off the block, ends up facing backwards at a 45 degree angle. Where you placed the 7m oil pressure, is that the position of the original 1JZ sender? I can see three fittings going into the block on the passenger side, I believe 2 are knock sensors, the other I don't know. All have a single wire going into them.
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Location:
Adelaide, SA
Registered:
May 2002
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Re: 1JZ Oil Pressure Gauge & Water cooling
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Wed, 15 October 2003 07:31
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Ahh it's head scratching time now! The 1jz has a "low oil" sensor in the sump as well, but I can't remeber what we replaced on the side of the block. I'll have a look tonight but it's hard to see with the intercooler piping and air-con compressor in the way. May well have been the 1jz oil pressure sender for the "check" light that illuminates when you start the car. Come to think of it, it probably was  !!
You need a right angled brass fitting to tuck the oil pressure sender behind the air-con pump. Made one with some brass fitting from local hydraulic hose shop. Make sure it's well tight though, otherwise it pisses oil out everywhere when you start it up. (like mine did  ) And it's a PRICK to change once the motor is in and the air-con pump on. Use loctite on all the threads etc etc.
We still have the "check" light working OK though - it's connected to the 7m oil pressure gauge.
My filter faces backwards as well, right under the inlet manifold. Pain in the arse to change it, as my hands don't fit under there.
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Location:
Perth
Registered:
October 2003
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Re: 1JZ Oil Pressure Gauge & Water cooling
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Wed, 15 October 2003 08:02
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I know the sensor you are talking of, it is wedged in next to the aircon compressor. It was even a bitch for my to pull the plug off it when i tore off the wiring loom 
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Location:
Sydney
Registered:
February 2003
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Location:
Sydney
Registered:
May 2002
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Location:
Perth
Registered:
July 2003
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Re: 1JZ Oil Pressure Gauge & Water cooling
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Wed, 15 October 2003 13:49
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So 1JZ's had an oil pressure switch (as opposed to an analogue sender)?
The reason I'm asking is my MA61 has an analogue dash (including an oil pressure gauge).
So is my best chance to see if the sensor from my 5MGE will screw into where the switch is on the 1J?
Is the oil pressure likely to be similar between a 5MGE (non-turbo) & the 1JZ?
(I'd try the new union bolt thing described above but I can't quite see what you are left with to screw a sensor into - looks like oil will come out of the head of the union bolt??).
Peter
Skip - sorry for hijacking you questions - you're in Perth so will have to catch up and compare 1Js
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Location:
Adelaide, SA
Registered:
May 2002
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Re: 1JZ Oil Pressure Gauge & Water cooling
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Wed, 15 October 2003 23:04
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I doubt it would screw directly in, but you could make it fit, and it would work with your oil pressure gauge OK. My MA70 is analogue dash and it works a treat. Idling oil pressure is ~2 Kg/cm2, under acceleration it goes up to 4.5 - 5.0.
That said, if I knew about the Union bolt mod, I'd have done it instead so much easier - but you'll probably still need to get a fitting to match the 5m sender to the Union bolt attachment. Oil comes out of the head of the Union bolt, which would be internally threaded to fit the stock oil pressure sensor.
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Location:
Perth
Registered:
October 2003
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Re: 1JZ Oil Pressure Gauge & Water cooling
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Wed, 15 October 2003 23:55
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Me scratching head over union bolt setup 
I have seen a screw in my oil filter bracket like the drawing, I think i will go remove it and check out what the thread is inside. I need only screw one gauge in, the original car is a diesel so im not too concerned about getting the factory gauge or warning light in the dash to work, the autometer gauge will do the trick.
Im glad im doing all this before putting the engine in!!!!
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Location:
Perth
Registered:
October 2003
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Re: 1JZ Oil Pressure Gauge & Water cooling
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Sun, 02 November 2003 23:27
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I pulled my aircon compressor of yesterday to get to the sensor. The sensor is huge  , not even a 1" ring spanner would fit over it, and there is absolutely no room around it due to block webbing. How do you remove it then, with a deep socket? If so what is the correct size?
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Registered:
March 2003
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Location:
Adelaide, SA
Registered:
May 2002
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Re: 1JZ Oil Pressure Gauge & Water cooling
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Mon, 03 November 2003 01:41
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Do the union bolt instead of taking that sender off, it looks so much easier! 
Perhaps some-one who has done it can send in a photo of the completed bolt set-up. Or print the article out, take it to the engine and have a bit of a play around, head scratch until you understand what goes where. Keep in mind you will still need a fitting to go inot the head of the bolt and connect your 5m sender.
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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Re: 1JZ Oil Pressure Gauge & Water cooling
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Mon, 03 November 2003 01:47
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Exactly what I did, but I never saw that article. Just drill a hole into the head of the bolt and get it tapped to suit your oil pressure sender.
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Location:
Perth
Registered:
October 2003
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Re: 1JZ Oil Pressure Gauge & Water cooling
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Thu, 06 November 2003 23:22
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I did what gianttomato said and drilled the end of the bolt to suit my Autometer gauge fitting. So if anyone wants a picture of it finished give me a yell.
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Location:
sunny coast, qld
Registered:
October 2002
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Re: 1JZ Oil Pressure Gauge & Water cooling
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Fri, 25 February 2005 04:40
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*back from the dead*
I am wanting to install an oil pressure guage very soon. I have just had a look at my car and the oil light is staying on. I have been told that it will stay on if the electrical connection is not connected as it works as a ground. So where is the electrical connection for this?
Is this the sender you guys were speaking of before or is that different?
Regarding the union bolt mod, would that fit most aftermarket mechanical oil pressure guages?
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Location:
Perth
Registered:
October 2003
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Re: 1JZ Oil Pressure Gauge & Water cooling
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Fri, 25 February 2005 04:47
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The union bolt mod will fit any aftermarket mechanical or electrical oil gauge because you have to drill and tap the top of it to suit your fitting/sender.
Im sorry I cant answer your other questions I dont know where the existing electrical sender is on the 1J but you should just find the corona wire from the dash and earth that to the chassis.
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Location:
sunny coast, qld
Registered:
October 2002
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Re: 1JZ Oil Pressure Gauge & Water cooling
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Fri, 25 February 2005 05:05
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Ok thanks Skip.
Don't worry about the idiot light question as I don't have any corona wiring left in the car.
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