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Motorsports & Track Forum
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Old 12-16-2008, 04:50 PM   #1
InterlagosMcoupe
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Where to tap for il temp sensor.

Where do most people tap for oil temperature? I can't figure out a good place to tap in the pan for a probe. I was thinking off the drain plug hole but cant find an m12 elbow to make use.
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Old 12-16-2008, 06:08 PM   #2
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Im sure someone online sells it. Have you looked into AN fittings? They make pretty much every size.

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Old 12-16-2008, 07:30 PM   #3
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I'm not sure how that helps me get a temp senor into the oil pan.
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Old 12-16-2008, 07:51 PM   #4
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Quote:
Originally Posted by InterlagosMcoupe View Post
I'm not sure how that helps me get a temp senor into the oil pan.
Ok i think i might have misread what you wrote. So the temp sensor bolt does not fit into the pan? is that the problem?

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Old 12-17-2008, 08:37 AM   #5
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You can try this.

http://leatherz.com/Merchant5/mercha...ry_Code=Gauges
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Old 12-17-2008, 10:11 AM   #6
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Originally Posted by VMRWheels View Post
Ok i think i might have misread what you wrote. So the temp sensor bolt does not fit into the pan? is that the problem?

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Wait what are you talking about, the bolt is not meant to just fit into the pan, you have to tap for it.

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That's for the oil filter housing.
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Old 12-18-2008, 11:30 AM   #7
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TMS has a mounting kit that replaces the oil level sensor with a bung for a temp sensor.

The best place to have an oil temp sensor is after the oil pump just before the oil goes into the main oil galley...but this isn't easily done.
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Old 12-19-2008, 11:21 AM   #8
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TMS has a mounting kit that replaces the oil level sensor with a bung for a temp sensor.

The best place to have an oil temp sensor is after the oil pump just before the oil goes into the main oil galley...but this isn't easily done.
I'm thinking about trying to put a T fitting on the oil return (from head) line that's at the front of the rear of the pan.

Only problem I'm thinking right now is that theres no clearance to screw a t fitting in <_< (would hit the oil pan as you turn it around)
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Old 12-19-2008, 02:57 PM   #9
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Quote:
Originally Posted by InterlagosMcoupe View Post
I'm thinking about trying to put a T fitting on the oil return (from head) line that's at the front of the rear of the pan.

Only problem I'm thinking right now is that theres no clearance to screw a t fitting in <_< (would hit the oil pan as you turn it around)
I feel like an idiot. You have an M-coupe which should have an oil cooler mounted which you can tap into those lines.

The oil drain-back line on the side of the head doesn't flow oil the way you think. It's more of a crankcase pressure balancing system...in other words there's more air than oil passing through there.
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Old 12-19-2008, 05:16 PM   #10
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I feel like an idiot. You have an M-coupe which should have an oil cooler mounted which you can tap into those lines.

The oil drain-back line on the side of the head doesn't flow oil the way you think. It's more of a crankcase pressure balancing system...in other words there's more air than oil passing through there.
Id rather not tap the oil cooler lines.... more importantly, I don't think you could anyway.

Also, its a drain and there's really nothing passing through it, just some oil dribbling down from the head, but it ends at the bottom of the oil pan which means there is always oil at the bottom of the line from the oil pan.

The crankcase pressure equalizes through other passageways.
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Old 12-27-2008, 11:56 PM   #11
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what's wrong with the factory s54 oil temp sensor? i know the m3 gets a gauge, does the s54 in the z4 get left out? Is the factory sender mounted in a poor position? I don't think bmw is dumb enough to buffer that gauge.
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Old 01-01-2009, 03:09 PM   #12
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I designed an adapter for the drain plug on my setup since my oil temp sensor is a little different.

What's the thread size of your sensor? Metric, NPT ?





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Originally Posted by InterlagosMcoupe View Post
Where do most people tap for oil temperature? I can't figure out a good place to tap in the pan for a probe. I was thinking off the drain plug hole but cant find an m12 elbow to make use.
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