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BMW 3-Series (E90 E92) Forum
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STETT Performance Stage 2 Oil Cooler Kit w/ 180F Thermostat **EXTENSIVE REVIEW/DIY**
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12-04-2010, 10:35 AM | #67 |
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I Understand some peoples logic that BMW had these oil temps scorching hot for a reason, while some may disagree, so let me just throw this out there...
Oil viscosity ratings are rated at 215 Degrees, so where would you want your oil temp? I rest my case. |
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12-04-2010, 10:51 AM | #68 | |
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The truth is we do not know what my operating temperatures will be in the warmer temperatures where this matters most. I acknowledged this flaw in my testing in the review. I am not sure what else I can do? |
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12-04-2010, 10:58 AM | #69 | |
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Very very nice write up. Thank You. I am very interested in purchasing. Alan
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Alan(iX)
1988 BMW E30 325iX Ordered 6/29/2006, Built 9/6/2006, Delivered 9/29/2006: 2007 BMW E92 335i Coupe, 6MT, space grey, black leather, dark burl, CWP, ZPP, ZSP, Comfort Access, Nav, Power Rear Sun Shade, Park Distance Control, Sirius |
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12-04-2010, 11:03 AM | #70 | |
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Cause the thermostat opens at 235-240.. LOL If BMW knew it all, they wouldnt be making mickey mouse fuel pumps, daffy duck injectors, and roger rabbit coilpacks either. Edit- I think you have mistaken my post as some attack to the integrity of your purchase of the oil cooler. However, my purpose of my post was saying BMW stock Oil temps are too high, and they should at best be 215 degrees. Meaning I would agree with your purchase, and the conclusion we need our oil temps lower. Take it easy. Last edited by Jeff@TopGearSolutions; 12-04-2010 at 11:22 AM.. |
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12-04-2010, 11:13 AM | #71 |
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Phenomenal as usual FB! I'm surprised the kit didn't come with a nice mesh grill to replace the OEM one in the fender liner though - that's the only part of this install that doesn't look great to me and it's one of the parts that can be seen. Other than that it looks like a high quality piece...
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12-04-2010, 11:14 AM | #72 | |
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Who wants to take the spring out, measure spring rate and start testing to get us down to 215ish? |
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12-04-2010, 11:16 AM | #73 |
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I'd be happy with daily 190-200 Oil Temps.
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12-04-2010, 11:23 AM | #74 |
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12-04-2010, 11:27 AM | #75 |
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The more I look at the pic, it really seems like swapping springs would be simple--the ID, OD and spacing of the spring don't need to be identical.
Sorry for the threadjack FBIS, We're all still amazed with your review and the product..just have to take a mental break and talk about something else since it took us 30 minutes to read, haha |
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12-04-2010, 12:36 PM | #76 |
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met Chad Stett at Dallas Cars and Coffee this morning. Chad- nice to meet you finally. We had a long discussion about the oilcooler- he of course had it installed on his 335. Man it looks even better in person. He took 30-45 minutes to answer all of my questions, and many others standing around, and I am confident this OC setup will be perfect for my needs (DD and a few track days/yr in Dallas). Can't wait to get it installed.!
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12-04-2010, 01:06 PM | #77 | |
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Its not like we have a magical engine here guys, if you look at any other vehicles oil temperature ranges, they usually are 190-210. If I were to guess, BMW wants more fluidity in their oil, maybe so it uses less oil pressure? Or perhaps emissions purposes keeping this engine scorching hot. If performance was what this car was about I would bet my last dollar they would be making this car with bigger oil coolers, and a thermostat opening in the 180-190 range. I apologize if this has gone somewhat off topic of the review, perhaps a new thread discussing oil temps is necessary. |
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12-04-2010, 01:08 PM | #78 |
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12-05-2010, 07:39 AM | #80 | |
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Also, I'm not sure what you mean by assumptions, the only assumption I made is that BMW wants the oil temp in a certain range, and I suggested that dropping the oil temp 50 degrees is probably not a good idea. I personally would want my temps in the 230 -260 range, with 270 being the highest I would be comfortable sustaining on the track. This based from data of personal track driving, as well as others. When I finish my setup, I will definitely test it on the numerous tracks available in the region, starting with VIR in February. You should also keep in mind that the thermostat only sets the lowest point of the oil's normal operating range. Given that oils are meant to run 210F+, dropping the temp below this point doesn't make a lot of sense. Which is part of the reason why it's so hard to choose a proper oil cooler size without the use of thermostat. The only real concern should be how high the oil temps go. If the oil cooler setup is not efficient enough to remove the heat given the power range of the motor, the oil temps will still go above ideal, regardless of how low the thermostat is set to. The only thing that controls the upper temp range is design of the core, the airflow to and through the core, and ambient temps, not the thermostat. In fact, he could run without a thermostat if he were only ever driving it on the track, just as some racers eliminate their coolant thermostats. For everyday driving, I would still strongly suggest that everyone doesn't go out and get a lower temp thermostat thinking that the drastically lower temps some how improves the operating efficiency of the car. That's really my only point. |
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12-05-2010, 07:45 AM | #81 |
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There is no logic in saying BMW wants scorching hot temps, and no one has suggested that. And 220, 250, 270 isn't scorching hot for oil. 300? Now that's way too hot. Since you stated a real fact about oil being rated at 215+, that should also suggest that you don't want the oil temp to operate below that point. Most racers will see much higher oil temps on track 260-270F range, and yes the oil is designed to run in that range. What I'm talking about is everyday driving temps. They should not be 50degress below what BMW designed.
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12-05-2010, 07:48 AM | #82 | |
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http://www.jegs.com/i/Intercomp/541/...ductId=1017701 |
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12-05-2010, 08:01 AM | #83 | |
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Also, keep in mind the cylinders and cylinder heads are completely water jacketed, meaning that water temp has the greatest effect on combustion efficiency, not oil temp. Which is another point as to why dropping the oil 50degrees isn't a great idea. Although the oil is being used to cool the surface of the piston, that's mostly to keep the piston from melting at the 1500F+ EGTs that this engine can see. The oil is also not being used to cool the turbos, water is. So if you want the engine to run cooler, change your water thermostat. The biggest (not the only) concern with oil temp is making sure it doesn't get so it hot that it starts to break down. |
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12-05-2010, 09:50 AM | #84 | |
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12-05-2010, 12:26 PM | #87 | |
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I have never owned a car with oil temps running this high though, my e92 325i never went above 210 regardless of driving style, so when I first got this car I thoght it was running too hot... In many ways I still do, since I don't know of any other streetcars that consistently run the oil this hot, but then I'm a regular Joe so what do I know. |
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12-05-2010, 12:57 PM | #88 | |
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Just relaying what I was told. Additionally, I think he said the cars run richer over there also. |
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