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BMW 3-Series (E90 E92) Forum
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Redline = Kill Engine?
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05-22-2014, 01:55 PM | #24 |
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Resline means pistons spinning faster, (more explosions) more heat generated, valve springs opening and closing faster, more blow by, etc. will this hurt your car, no way. Will it decrease the life of your engine if driven hard like this all the time, yes. But who cares, we are not keeping a car forever, drive it how you want and enjoy it.
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05-22-2014, 01:59 PM | #25 | |
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05-22-2014, 03:59 PM | #26 |
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Thanks everyone got the answers I was looking for! Just felt the need to ask since my dad helped me buy the car he says it isnt good to push it the way I do lol but Im a rebel its in my Genes
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05-22-2014, 06:42 PM | #28 |
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You aren't hurting anything. In first and second you aren't there long enough to matter. I drive real aggressive and find this car impossible to drive in the upper rpm range. If you were really driving like Nascar constantly and steady state driving about 6000rpm sure you'd wear it out. A nano second at redline isn't hurting the engine. If it did your redline would be 1000rpm lower from BMW.
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05-22-2014, 07:02 PM | #29 |
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Where did I read of BMW"s engine dyno endurance testing? They test out the engine design (not every engine coming down the factory line!) by doing crazy stuff like run it to redline, hold it there, let it heat soak, then throw a bath of ice water on it to super-freeze it. Then repeat. Over and over again. Then, after thousands of miles of this they take everything apart and look for abnormal wear etc.
Modern engines can take a LOT of abuse. Now the other components (i.e. turbos, intercoolers/radiator, etc.)....
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05-22-2014, 07:04 PM | #30 |
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So what do they do at the home country where they sustain high RPM for MINUTES at a time?
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05-22-2014, 08:30 PM | #31 | |
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Wonder how many posters are engine development engineers or even race engine builders with all the free advice being given out with such certainty. Basic physics, the faster you run an engine the faster it wears.
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05-22-2014, 09:02 PM | #32 |
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had a e92 328 a few months ago, I redllined the shxt out of it and at 89,000 miles it still ran perfectly and never used any oil... I did, however, miss-shift on one occasion dropping it into 2nd instead of 4th at 85 MPH... Engine exhaust valves were toast with major imprints on the pistons.. With that being said, I plan to redline the Shxt out of my 435i MT but with 1,000% more caution.
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05-22-2014, 09:46 PM | #33 | ||
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05-22-2014, 11:39 PM | #34 | |
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05-23-2014, 10:26 AM | #35 |
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05-23-2014, 10:39 AM | #36 | |
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If what you say is true, no BMW in Germany that sees extended time on the unrestricted portion of the Autobahn is going to live to see the end of their warranty .
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05-23-2014, 10:46 AM | #37 |
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05-23-2014, 10:47 AM | #38 |
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Redline = max rev engine can go before it loses power significantly even when rev'ed higher. Most BMW's engine max power/torque comes in around 1k rpm before the redline anyways (depending on model/engine variation).
Holding the rev at the rev limit doesn't really makes sense, it doesnt make the car any faster/ engine respond better/ any benefits at all. I quite often Redline my JDM cars (both the RX-7 and NSX) because they are build to make the most power near the redline. Will it decrease the life of the engine? Yes, i believe so. But not by an exponential amount. The engine itself and many of it's components are wear and tear items, so it is inevitable that if you push it harder, rev it faster, it will wear out sooner. But as long as you take care of the car, make sure it is adequately lubricated with fresh oil at more frequent intervals, cooling system runs nice and cool, replace components like plugs, filters, pumps, etc more frequent (as a preventative maintenance), you should be fine. Good Luck and have fun red-lining!
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05-23-2014, 12:42 PM | #40 |
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05-23-2014, 01:33 PM | #41 |
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Ram both my M3's at readline quite a bit.
Both had rev limiters and I'd let them bounce off the limiter. The biggest issue is there isn't normally a lot of power at redline. For the record, both my M3's were sold with the original motors still strong at +200K miles. Redline didn't kill them. Always warmed up and always used Amsoil synthetic.
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