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E36 M3 (1992-1999) {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999


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Old Wed, Jun-06-2018, 09:14:04 AM   #41
M3AN
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Default Re: 500k+ Mile E36 M3

O2 sensors.
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Old Wed, Jun-06-2018, 05:27:25 PM   #42
bimmerteknik
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Default Re: 500k+ Mile E36 M3

Oh wow, thatís some precise data monitoring then.


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Old Sat, Jun-09-2018, 12:04:41 AM   #43
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Default 500k+ Mile E36 M3



Race land Header fitment was on par with what most others have experienced. Had to drill out the stud holes. I just used a cobalt bit and some penetrating oil for cutting and it took about 2 minutes. Canít tighten them down until itís off the stand tho.

Luckily install is happening tomorrow.




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Old Sun, Jun-10-2018, 03:16:32 PM   #44
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Default Re: 500k+ Mile E36 M3

Welcome. Cool story and details in the thread. Get vids of the start and first drive. Great pick up for a guy with the skills and resources.

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Old Wed, Jun-13-2018, 12:29:24 PM   #45
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Default Re: 500k+ Mile E36 M3

Incredible story. It's awesome that you'll be able to to wheel that thing around the track knowing so much of its history and after having done so much work to refresh the engine.
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Old Thu, Jun-14-2018, 07:40:14 PM   #46
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Default 500k+ Mile E36 M3

Thanks, may be longer than I anticipated before itís worthy of the track.

Itís at an exhaust shop now getting flanges welded on to mate up to the euro reps.
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Old Tue, Jun-19-2018, 12:01:11 AM   #47
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Default Re: 500k+ Mile E36 M3

Something to report.

Drove to Henryís Muffler to have some flanges welded on. When arriving less than 3 miles from the shop, the oil light started to flicker at idle.

After the exhaust was mated i looked into it a bit. Oil pressures are certainly not what Iím used to seeing. Understand my day to day with BMWís consist mostly of N55/63/20 and electric drives.

At cold start with Motul 10w40 my pressure is 2.9bar (42psi) and quickly drops to 2.2bar (31.9psi)

As coolant /oil temp increases to about 195*F the pressure drops to as low as .2bar (2.9psi) at idle per the gauge. The gauge is a left over fluid filled gauge we have from our previous RR franchise.

This seemed very low so I freaked out a bit and let it cool down over night. Verified pressure returned when cold. Watched the gauge again as it dropped down to .2/.3bar range as it reached operating temp, all the while attempting to make sense of the oil pressure.

I went ahead and drained the oil with 13 miles and some idle time. Oil looked like that of a break in. Clouded with wear metals. Replaced with new filter and Castroil 10w40 in a faint hope that it was the ďmineral oilĒ thinning too much at operating temp. The new oil does the same though.

Engine idles great, (no tuning) when driven, as the oil pressure light starts to show up at idle it will also dip in rpm. Iím assuming these are not related, and that the dip may be due to the lack of tuning.

At some point in all this I replaced the pressure sensor as I did not trust the pressure gauge.

I also placed a gloved finger over the port to get an idea of what 3 psi feels like. It was a weak pulsing, not consistent with whatís to be expected from out pump design.

I noted that when revved to build pressure 2k rpm generates right at 2bar (29psi) and the Vanos can be heard rattling. Rattle is to be expected to some degree as i did not do the anti rattle kit when i resealed the Vanos. I placed my fingers on the Vanos feed line. I can collapse it with 2 fingers even when revved. Not sure that thatís applicable information as I have not tried against a proper functioning oil system.

As I thought over worst case scenarios the oil pump kept popping into mind. I rebuilt the pressure valve with BMW parts (spring, valve, o-ring ) the rotor and shaft came from Achilles and the outer rotor from BMW.

I looked through the parts and found the old piston. Looking at it Iím now concerned the bore which it resides in may be the culprit. (See photos)


I have ordered a pump from FCP and it will be here by Friday. Plan is to swap the Achilles rotor and shaft over and give it another go.

But Iím also interested in what some of the more experienced s52 owners hear think.

I have read one case wear the control valve retaining clip failed and the valve was hanging out.

I also wondered on the possibility that i overlooked damage/cracking of the pickup tube. But I wouldnít expect the pressure to behave quite like this in such a case. 🤷*♂️


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Old Tue, Jun-19-2018, 02:13:27 AM   #48
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Default Re: 500k+ Mile E36 M3

I've been through a good amount of pains with the phantom flickering oil light. When I first bought my car, I didn't notice this issue until the summer came it got nice and hot. I thought my engine was ****ed so I did like EVERYTHING to try and fix this.

Strangely little known fact: BMW says right in the owner's manual that the light may flicker at idle when it's hot. I have a picture of this saved somewhere since I thought I was going crazy. It was like 4 months before someone told me this lol thanks guys. So... The flickering light at idle is not necessarily indicative of a problem, as long as your engine builds pressure properly under load, which it sounds like yours does.

Still... Everything you are doing is a good idea, since you're rebuilding so much anyway it would be a shame to have to redo all this work due to something small and silly. I would say do the VANOS again just because the rattle is going to annoy you eventually, so you may as well kill that "while you're in there." Those 4 words are the bane of E36 ownership. If it exists, you need to replace or rebuild it.

You can also try using 15w50, I use that in the fairly hot SoCal climate and I have very rare lifter tick and very rare light flicker. I also run about a half quart over usually to help eliminate lifter tick (common practice with track guys.)
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Old Sun, Jun-24-2018, 01:53:35 AM   #49
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Default 500k+ Mile E36 M3

Oil pressure issue has been resolved. Turns out, i did not install the jets/squirter things under the main bearings. They are in now, the mains and rod bearings looked fine.

Also noted the oil pickup tube was cracked. Swapped it with a new one and left the original pump with Achilles upgrade in place.

Motor was dropped Thursday night and reinstalled today.

Weíll see how it drives over this next week.



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Old Sun, Jun-24-2018, 02:56:59 AM   #50
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Default Re: 500k+ Mile E36 M3

As soon as I started reading this I figured oil squirters not installed
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Discussing 500k+ Mile E36 M3 in the E36 M3 (1992-1999) Forum - {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999 at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)