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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Fri, Jan-10-2020, 11:50:53 PM   #21
heinzboehmer
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Default Re: Quick, cheap, and easy VANOS oil pressure gauge

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Originally Posted by Braymond141 View Post
Not even that little. You can get everything for under $30 if you buy in bulk.
I paid $28.18 for one gauge and one fitting, shipping included.
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Old Fri, Jan-17-2020, 10:02:45 PM   #22
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Default Re: Quick, cheap, and easy VANOS oil pressure gauge

Thanks OP! I ordered this and tested my vanos to come to the conclusion that there isn't enough pressure. It is sitting at 90ish bar and I have readjusted it to be at 115.

Just to clarify, that is 115bar while idle?
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Old Fri, Jan-17-2020, 10:06:51 PM   #23
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Default Re: Quick, cheap, and easy VANOS oil pressure gauge

I'm sure others are more qualified to answer that question but my understanding is the engine tries to keep that pressure all the time. When you accelerate quickly I see the pressure drop and then climb back up again. The accumulator's job is to help with this by supplying extra pressure when it drops (similar to a capacitor).

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Old Fri, Jan-17-2020, 10:40:21 PM   #24
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Default Re: Quick, cheap, and easy VANOS oil pressure gauge

Well the valve aims to keep a constant pressure at all times, so at idle and above. 115 is what my new valve was set to at the factory.


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Old Sat, Jan-18-2020, 04:25:48 PM   #25
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Default Re: Quick, cheap, and easy VANOS oil pressure gauge

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Originally Posted by terraphantm View Post
Considering kpa to bar is just dividing by 100, it might make sense to just use the first gauge and not mess with additional adapters.
True. Regardless, we have inexpensive options available. Thanks again OP for stirring up the discussion.
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Old Thu, Jan-23-2020, 08:49:16 PM   #26
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Default Re: Quick, cheap, and easy VANOS oil pressure gauge

Got my banjo fitting from the UK, but is anyone else getting seriously jerked around by Amazon on the gauge? They've delayed shipping 3 times now over the last two weeks. Got an update from them this morning saying there's been another delay and that the new scheduled delivery time is by 8PM today, but it also shows as not having even shipped yet?...
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Old Sat, Jan-25-2020, 12:13:26 AM   #27
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Default Re: Quick, cheap, and easy VANOS oil pressure gauge

I ordered my gauge on Dec. 27th, the day this thread started, still haven't got it.
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Old Sat, Jan-25-2020, 12:38:43 AM   #28
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Default Re: Quick, cheap, and easy VANOS oil pressure gauge

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Originally Posted by grannyknot View Post
I ordered my gauge on Dec. 27th, the day this thread started, still haven't got it.
Mine finally arrived today, ordered 2-3 weeks ago.
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Old Sat, Jan-25-2020, 04:03:31 PM   #29
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Default Re: Quick, cheap, and easy VANOS oil pressure gauge

We have had good luck with the AEM pressure sensors. They seem to hold up better than most when bolted directly to the block.

https://www.aemelectronics.com/produ...l-psig-sensors
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Old Sat, Jan-25-2020, 08:21:28 PM   #30
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Default Re: Quick, cheap, and easy VANOS oil pressure gauge

My adaptor & tech drg.
Re the digital guage, I tried one of these but got odd results. May have been due to lack of temperature compensation. Note that we have on board sensors already in this range, the SMG pump pressure sensor and the DSC.
For me, the big prize is not on board live logging of pressure data, but instead live measurement of actual cam position vs demanded. This is what matters, ie how good the servo system output is.
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Attached Images
File Type: jpg Vanos test July 2016.JPG (124.7 KB, 38 views)
File Type: jpg TESTFITTING.JPG (115.7 KB, 36 views)
File Type: jpg TEST.JPG (123.4 KB, 35 views)
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Discussing Quick, cheap, and easy VANOS oil pressure gauge in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)