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07-12-2007, 11:11 AM | #1 |
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N54B30 Oil Temps
http://forums.bimmerforums.com/forum...d.php?t=786298
This link refers to issues of high oil temps in the 335i. Not particularily a comforting series of posts (after the OP's original question). It appears that any of us intending to use the 135i in HPDEs or other track related activities better plan on a LARGE aftermarket oil cooler as BMW seems to feel that the N54B30 was not intended for that kind of driving. Bummer!
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07-12-2007, 05:18 PM | #2 |
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Motor Trend has a video on their website of the comparison between the G37 vs. 335i coupe on the track. The 335i is a manual sport package so it had to have had the oil cooler and it still went into limp mode. So it looks like even with the oil cooler, it will overheat on the track eventually.
http://www.motortrend.com/av/roadtes...parison_part_2 |
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07-12-2007, 06:14 PM | #3 |
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There are already cheap upgrades for intercooler's, and 335i's pushing 350whp raced for 12 hours straight with them and WON! (against sti's evo's, etc.) I can get you the link if you want. But they we're manuals. The AT are known for being great for everything except racing, but not fo rthe usual reasons (AT are putting down faster 1/4 mile times). It's because they generate alot more heat then the MT which obviously the enging soaks up. If you have the air-to-oil cooler and a MT, you will be fine, you can run all day, np. If you have an AT, you'll need some aftermarket components to keep her cool on race day.
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07-12-2007, 10:01 PM | #5 |
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And I don't want to be too pessimistic, but it also seems logical that the engine compartment would just a little smaller than the 335, thus flowing less air.
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07-12-2007, 10:04 PM | #6 |
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Very true, and I dont want to continue to sound too optimistic, but the numerous, numerous spy shots of this car on the 'ring has to suggest that BMW has experienced the overheating problem (if they dont experience there after numerous laps...). I would imagine that BMW would be working on a solution to improve upon the N54's oil temps for the 135i.
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07-13-2007, 08:22 AM | #7 |
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The temps are high but at this point a good quality syntetic will be able to protect the engine up to those temps. Like someone mentioned the car goes into limp mode when it sees the temp go past 310 so you won't blow the engine.
The larger issue with this though is long term durability. With such a tight engine bay I wonder just how long those turbo's will last or how all the heat will effect hoses, gaskets etc. And when those turbo's finally blow you'll probably have to pull the motor in order to change them just like the B5 S4's. That turns into a job with probably 15 hours of labor (maybe more?) plus the cost of the turbo's...ouch! This is one of the reasons, the other being price, that I may end up with a 128 Mike |
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07-13-2007, 08:50 AM | #8 |
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I agree with MPower, BMW is not stupid, they know there is a problem on the 335's and I feel confident that they will rectify this on future 335's as well as the new 135's.
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07-16-2007, 01:51 AM | #9 | |
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Quote:
:-/ I'm not saying they won't do their homework on the 135, given the way they are marketing it toward the performance driver and *knowing* that the N54 has oil temp issues already, but simply seeing the car at the Ring doesn't mean it's all shaken down by a long shot. |
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