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Old 03-26-2010, 10:54 AM   #1
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Lightbulb Sender fitting for oil gauges.

I'm getting some Autometer gauges for oil pressure and oil temperature. The turbo gets oil from where you'd normally mount an oil distribution block so I'm thinking the drain plug would be the next easiest sender location. Therefore I need a banjo/T block setup for the drain bolt. I've found some options that'd work but they'd make oil changes pretty complicated. Can anyone recommend a nice one they've seen in action?

The drain bolt is M12x1.5 and the ports for the senders would be 1/8 NPT. Thanks!

EDIT: the turbo actually gets oil from another port so a block would be as feasible as it usually is.
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Old 03-26-2010, 11:31 AM   #2
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1/8 NPT T Fitting Adapter
http://www.glowshiftdirect.com/1-8-n...g-adapter.aspx

This is my best candidate at the moment. I looks like I could use the extra port as the new oil drain plug, which would make oil changes pretty simple.
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Old 03-26-2010, 11:39 AM   #3
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Thats a nice little piece. Its a MUST for a nonm to get an oil temp gauge. You will get SO much info during cold startups and highway bomb runs.

Technik tapped the oil pan drain bolt on my old ESS kit, the sender has a disconnect clip and a open wrench worked without hassle to get the plug out.

But I discovered the mityvac. And it made oil changes much much easier.
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Old 03-26-2010, 12:14 PM   #4
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Thats a nice little piece. Its a MUST for a nonm to get an oil temp gauge. You will get SO much info during cold startups and highway bomb runs.

Technik tapped the oil pan drain bolt on my old ESS kit, the sender has a disconnect clip and a open wrench worked without hassle to get the plug out.

But I discovered the mityvac. And it made oil changes much much easier.
Cool
That mityvac is real tempting.
Good point about the quick-disconnect - I should have realized that!

Now my question is just clearance.
I'm getting Sport Comp Digital Gauges. I looked up the senders:

Oil pressure sender 2242:


Oil temp sender 2252:

This one seems to stick WAY out^

Does anyone know of a T-block that'll fit that temp sensor element?
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Old 03-26-2010, 02:02 PM   #5
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Hey McSpeed, got your PM.

So to clarify, you want to install a 1/8NPT oil temp sensor and a 1/8NPT oil pressure sensor at the drain plug area. Hence you're looking for a tee-off that has a 1/8NPT - M12 - 1/8NPT. And of course the tee-off piece and the sensors have to clear that part of the oil pan.

If that's the case, there is one flaw in that oil at the drain plug is not pressurized. So you will be measuring something close to atmospheric I reckon. I really doubt this is your intention. Otherwise the oil pressure sensor has to go to where the oil filter housing should be. What kind of FI setup do you have?

So then that leaves us with just the 1/8NPT oil temp sensor. The old school way is to drill/tap your OEM drain plug. Works fine. Nothing will blow up since the pan is not pressurized. I have had this setup for track.

The other way is to get an adapter for male M12 to female 1/8NPT. But this adapter has to clear the recessed area where the OEM drain plug goes into the oil pan. The OEM plug has a 17mm head. The recessed width should be about 22mm if I recall correctly.

I found this picture from google:



Let me know if this makes sense.
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Old 03-26-2010, 03:07 PM   #6
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Gotcha - so it looks like I'll be all set for temp at the drain plug with the Autometer 2277 M12x1.5 to 1/8" NPT adapter (?):

(I'm assuming it'll fit but this may or may not be an actual picture of it)

Pressure-wise, the search continues. I have the Technique Tuning Stage 1 kit which uses a drilled out version of a banjo at the filter housing to draw oil for the turbo. I will have to check out the filter housing area for pressure sender mounting options... but I know things are pretty tight around there post-turbo.

Is there anywhere else that's good for picking up oil pressure?
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Old 03-26-2010, 03:40 PM   #7
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will this work
http://leatherz.com/Merchant5/mercha...ry_Code=Gauges
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Old 03-26-2010, 03:46 PM   #8
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Maybe - but I think that mounts at the same point as the turbo oil feed.
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Old 03-26-2010, 03:56 PM   #9
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I think the AM part is this:



I have used something like that before. The only gripe I have is that the effective thread length for M12x1.5 is quite short compared to the OEM M12 plug.

Just make sure the external hex of this adapter does not exceed the recessed area.

I have seen the leatherZ block mounted behind the housing. With your kind of 'bulky' pressure sender, turbo oil feed and this distribution block, it's going to be quite a bit of mess there.

Do you have an engine oil cooler by any chance? You can always tap one of the lines for an inline oil pressure reading.
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Old 03-26-2010, 07:10 PM   #10
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Do you have an engine oil cooler by any chance? You can always tap one of the lines for an inline oil pressure reading.
Not yet - the temp sensor was going to help me decide whether to get one

For clarification, with the turbo a hose attaches to the end of that bolt at the circled port on the lower right:


Is it possible/advisable to get oil pressure from either of the other circled ports via some kind of fitting?
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Old 03-26-2010, 07:27 PM   #11
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Maybe I can splice a T-fitting into the hose that feeds oil to the turbo. Would that be a decent pressure source? Or do I really want to get it right at the filter housing?
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Old 03-26-2010, 07:47 PM   #12
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Maybe I can splice a T-fitting into the hose that feeds oil to the turbo. Would that be a decent pressure source? Or do I really want to get it right at the filter housing?
If you can do it then go ahead , however T'ing off oillines is pretty hard to get perfect.
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Old 03-27-2010, 01:36 AM   #13
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bottom left in the pic. That's oil pressure. I would put a distribution block there. Tap it for the factory oil pressure sender, another oil pressure sender, and a temp sender.
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Old 03-27-2010, 02:56 PM   #14
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bottom left in the pic. That's oil pressure. I would put a distribution block there. Tap it for the factory oil pressure sender, another oil pressure sender, and a temp sender.
Awesome - so the Leatherz block doesn't mount at the turbo's oil feed location afterall. This should be straightforward then. Thanks guys!
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Old 03-28-2010, 01:42 PM   #15
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McSpeed,

All 3 'circled' ports are pressurized.
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Old 03-28-2010, 11:32 PM   #16
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What's the top port in this picture?

Top: ? I'm guessing temp sender
Lower Left: Oil pressure sender
Lower Right: VANOS oil supply

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Old 03-31-2010, 07:32 AM   #17
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Paraklas just got me a link for THIS:

Sender ports in the oil filter cap sounds awesome (like the UUC Oil Center - but this fits my car)
http://www.ca-automotive.co.uk/varia...jMzg2Mw==.html

Anyone have experience with these?
Is it just as good a place to grab temp and pressure in terms of the data you get?
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Old 03-31-2010, 10:51 AM   #18
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^^ thats a pretty badass piece. Nice find paraklas
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Old 03-31-2010, 07:38 PM   #19
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I attached a pic of the ports defined. Not sure where you found the original pic. I hope the owner doesn't mind.

I have seen that cap before. There's another company that sells it in the US. Can't seem to recall the name. Try a combination of words using google: oil, filter, cap, top, E46. If you still want to order from UK, ask if the ports are NPT or one of those metric BSPT, BSPP type.

I have not used it before. But the only gripe I have with getting the readings from the top is that your pressure sensor is still bulky. Once installed, it might protrude 'up' such that the connectors/wirings might be squashed against the engine hood sound barrier.

Otherwise it's a decent product.
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Old 04-01-2010, 07:16 AM   #20
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Thanks! I'll make some measurements once I get the sender in and go from there.

Here's the US version:
http://www.bmpdesign.com/product-exe...earch_model/76
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