1badFB

iTrader: (1)

I was just wondering where to put the probe of a water temperature guage, and the fitting of an oil pressure guage. I have an 85 with a 12a and the stock guages dont work, is it possible to use the stock locations, if so where are they and if not what can i do? thanks.

Rx-7Doctor

iTrader: (13)

Are you saying none of your gauges work, did this happen all of a sudden? rx7doctor

1badFB

iTrader: (1)

well all my other guages work, just the temperature and oil pressure guages seem to be intermittant and ive heard that they can be prety iffy, so i went out and got a few aftermarket guages just to be safe. I just wanted to know the easiest place to mount the sensors basically.

Rx-7Doctor

iTrader: (13)

The water temp sensor is located on the left side of engine below the oil filter area and the oil pressure sender is also there. Those are the best places, but you need to buy adapters to fit into the engine block. rx7doctor

Elysian

i went to lowes and got the adapters i needed when i got a new coolant guage for my 88 TII... had to do a little rigging, but it worked perfectly and never leaked

christaylor

Your other option is to get a 1/8" pipe tap (if that's what the aftermarket gauge is) and tap out the oil press. hole. On the water temp, assuming it's an electrical connection, you can rig up a bung to the backside of the waterpump, or, to the place just above the oil press. sensor.

John64

Don't tap anything! You can get and adaptor for the oil pressure to fit at Autozone. Then for water temp there is a hex plug on the drivers side engine block at the bottom front side. You will have to feal around to find it. If you have your ac out it will be easy to find. It will just screw right in. By the way these are Autometer senders.

John

1badFB

iTrader: (1)

They are mechanical guages, I know it doesnt make a difference but i thought id mention it.

Felgar

Isn't that plug on the bottom the place for the plug-in heater? Not a good idea to take that out in Winnipeg!

As for the oil pressure sender I replaced mine with a stock one and it's worked great every since. When they're working I find the stock guages to be fine... But to each their own I guess.

John64

Not sure if it for a plug in heater, but it works awesome.

John

1badFB

iTrader: (1)

yah that is where my block heater sits so where else can i put the oil pressure fitting?

Felgar

The spot at the bottom would be for the temp sensor anyways...

1badFB

iTrader: (1)

well then, where can I put my temperature sensor as it has a fairly large probe and I want to keep my block heater? also if I was to put a T fitting on the oil lines under the beehive oil cooler would this be adequate for oil pressure or does it have to be in the stock location? any other ideas on where to put these sensors would be greatly appreciated, thanks.

John64

The stock location works fine, just use that adaptor. As to the water temp, you can tap it out, but you could get metal shavings in there. Which is no good. There should be a sensor by the radiator hose at the top by your water pump. On a 13B it is for the idle or something( help me out on this one).

John

1badFB

iTrader: (1)

My oil pressure guage came with a 1/8" BSP fitting, is the correct one for the stock location, and if so could anyone possibly post a pic of where the oil pressure sender location is because Im unsure where it is. By the way my car has emmissions systems removed and also the A/C so its prety easy to see in the area I just want to be sure, Thanks.

John64

Here you go. The large one is my OPS and the small one is the factory water temp.

1badFB

iTrader: (1)

Thanks john, so is the 1/8" BSP fitting going to thread right in like the stock one?

John64

As you see in the picture I had to use an metric adaptor. They sell a kit of 4 at atuozone for like $10. The sendor is 1/8".

John

1badFB

iTrader: (1)

I didnt quite understand, are u saying that with the 1/8" BSP fitting that I have, Ill need an adapter or will it just thread in?

1badFB

iTrader: (1)

anyone?

gonzz

The metric adapter screws into the engine, then your sensor screws into adapter..

Mireck 12A

Yes i've been thinking about using that location for a temp switch also but I'm not sure what the temp difference would be with the rear temp.sender location, the rear will always be hotter (and I would like keep that as cool as possible)

I have had a temp.switch in the upper radiatior hose, but I feel this is not a good place to use a temp.switch(for a electric fan)
Because when driving on highway's (or autobahns) the coolant in the radiator will cool more than enough, but the engine coolant temps will rice slowly. Basicly, I don't care what the temps in the rad will be, but I want to know the engine temps, and let them switch the electric fan off and on.....

anyone care to comment?

what would be a nice "switching temp" ? 97-90 degrees? or 95-86 degrees?