What psi does the m20 run at? I found a old VDO 5 bar (72 psi) gauge and was wondering if it is enough. I've seen other oil gauges that up to 10 bar. Also what is normal oil temp? The matching oil temp gauge reads 60-170C.
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ส็็็็็็็็็็็็็็็็็็็็็็็็็Originally posted by blunttechI need you to exfoliate my ballsack
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You need to match the sending unit to the gauge. They will have an ohm range. The two need to match. E30 oil pressure will be all over the chart depending on oil weight, motor, mileage, temperature, ect. You don't need to worry about the high end as much as you do what the low end is. That's the important number. The idiot light is 7 or 7.5 PSI.Originally posted by Matt-Bhey does anyone know anyone who gets upset and makes electronics?
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Yeah the sending unit is no prob. I was just wondering in case the m20 put out at 100 pounds.
Not my pic but the gauges are the same.
ส็็็็็็็็็็็็็็็็็็็็็็็็็Originally posted by blunttechI need you to exfoliate my ballsack
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Originally posted by Click View PostWhat psi does the m20 run at? I found a old VDO 5 bar (72 psi) gauge and was wondering if it is enough. I've seen other oil gauges that up to 10 bar. Also what is normal oil temp? The matching oil temp gauge reads 60-170C.
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Regular e30s don't have a oil temp sender stock. There's many different places you can place a sensor and it is up for debate which is the best location.
Various locations
Stock E30 M3 has both sensors in the housing.
Drain plug
Tap the hollow housing bolt.
Oil distribution block.
Sandwich place for the oil filter housing that has threaded ports for oil sensors and aux lines.
ส็็็็็็็็็็็็็็็็็็็็็็็็็Originally posted by blunttechI need you to exfoliate my ballsack
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Thanksส็็็็็็็็็็็็็็็็็็็็็็็็็Originally posted by blunttechI need you to exfoliate my ballsack
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My oil pressure gauge seems to read around 60-80 psi at startup when cold. I use 20w50. At idle when it's warm it hangs around 20 or so.
My oil temp is a consistent 200 degrees under normal driving once everything has warmed up. During hard driving or track stuff it'll creep up to 220.
I use a sandwich adapter btw. They're picky about how they're installed and can weep sometimes.-Geno
'87 325is (s52'd)
'95 525iT
'02 Range Rover 4.6 HSE
'98 Disco 1
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I've been running VDO electric gauges for 15 years on all my E30's. Do what the factory does, install the senders in the oil filter housing or block and not the oil pan. It's been proven on this forum that the pan readings will be a few degrees cooler than at the oil filter housing. I have senders both in the pan (previous owner) and block (oil pressure adaptor) on my convertible and verified this myself. M20 oil temps are cool around 165-180F and a bit more on hot days in traffic or hard driving. M20B25 oil pressures can be as low as 7PSI idle and upto 65-72PSI at high rpms. A 72PSI gauge is kinda pushing it. 80PSI would give a bit more room. I run a 150PSI gauge which is overkill and I don't think it's ever been past 85-90PSI. Also, the oil pressure senders are extremely sensitive. It matters how and where you mount them. On my M3 and M Tech, I had erratic readings when I had it installed directly on my oil filter housing. After I remote mounted it the readings were steady and accurate. The sender will last a lot longer too. I had read that VDO oil pressure senders must be mounted within 45 degrees of vertical to be accurate as well. Jim Powell from DDM can verify this."I'd probably take the E30 M3 in this case just because I love that little car, and how tanky that inline 6 is." - thecj
85 323i M TECH 1 S52 - ALPINEWEISS/SCHWARZE
88 M3 - LACHSSILBER/SCHWARZE
89 M3 - ALPINEWEISS II/M TECH CLOTH-ALCANTARA
91 M TECHNIC CABRIO TURBO - MACAOBLAU/M TECH CLOTH-LEATHER
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Originally posted by reelizmpro View PostIt's been proven on this forum that the pan readings will be a few degrees cooler than at the oil filter housing
Originally posted by reelizmpro View PostThe sender will last a lot longer too. I had read that VDO oil pressure senders must be mounted within 45 degrees of vertical to be accurate as well. Jim Powell from DDM can verify this.Originally posted by Matt-Bhey does anyone know anyone who gets upset and makes electronics?
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