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Old 06-06-2010, 05:32 PM   #1
maruksai
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Default Is High Reving Harmful?

Is it bad to redline your engine on a daily basis? How would it affect long term engine life? Will I see 150k-200k miles?
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Old 06-06-2010, 05:45 PM   #2
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IMO it doesn't hurt the engine one bit, that's what a rev limiter is for.
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Old 06-06-2010, 06:18 PM   #3
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I agree with subyroo.
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Old 06-06-2010, 06:39 PM   #4
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Is there anyone on here that has high mileage on a hard driven subie?
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Old 06-06-2010, 07:03 PM   #5
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ya rev limiter is set at a safe limit for your car. But maintainting your car is all on how often you check or change your oil and such.
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Old 06-06-2010, 07:12 PM   #6
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Engine wear - or the expected mileage out of a car is a function of mileage, nr of winters, maintenance, average RPM, peak RPM, the distribution of engine load over total engine's operating time, number of startups, minimum temperature, maximum temperature, commute distance and hours, traffic conditions, intervals between consecutive startups, quality of roads driven, altitude, elevation, air pressure, and humidity.
Add to that the impact of the driver's age, health, skill, marital status, temper, the personnality of your significant other and the number of kids. To make things worse, a lot of the aforementioned variables are mysteriously correlated with the others (a temperamental driver with a bitchy wife and screaming quadruplets might vent on the gas pedal more than a 85yo zen retired hippie).

Bottom line is that you won't get a satisfactory answer. Search the forum for mileage tales. Lot of cars driven like they've been stolen with litle problems and big mileages. Lot of stories of babied cars which kept having issues too.
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Old 06-06-2010, 07:28 PM   #7
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Quote:
Originally Posted by maruksai View Post
Is there anyone on here that has high mileage on a hard driven subie?
I had 195k when I spun a rod bearing on this run, I ride the limiter at most events

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Old 06-06-2010, 08:01 PM   #8
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Quote:
Originally Posted by Bluefoton View Post
Engine wear - or the expected mileage out of a car is a function of mileage, nr of winters, maintenance, average RPM, peak RPM, the distribution of engine load over total engine's operating time, number of startups, minimum temperature, maximum temperature, commute distance and hours, traffic conditions, intervals between consecutive startups, quality of roads driven, altitude, elevation, air pressure, and humidity.
Add to that the impact of the driver's age, health, skill, marital status, temper, the personnality of your significant other and the number of kids. To make things worse, a lot of the aforementioned variables are mysteriously correlated with the others (a temperamental driver with a bitchy wife and screaming quadruplets might vent on the gas pedal more than a 85yo zen retired hippie).

Bottom line is that you won't get a satisfactory answer. Search the forum for mileage tales. Lot of cars driven like they've been stolen with litle problems and big mileages. Lot of stories of babied cars which kept having issues too.
Awesome post
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Old 06-06-2010, 09:12 PM   #9
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Quote:
Originally Posted by dstan View Post
I had 195k when I spun a rod bearing on this run, I ride the limiter at most events

YouTube- Turner Field.AVI

Yeah dude that's a bit much.
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Old 06-06-2010, 09:14 PM   #10
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In general, I'd assume if you treat it right through regular maintenance and even some preventive maintenance (replacing things before they call to be replaced) you should get a good 150-200K out of a Subaru engine, or really any car. Pair that with babying it, and I think you have a good recipe for success.

Now, no maintenance and babying it... yep, gonna lead to problems. Maintenance and gunning it all the time means more maintenance, which if you're following Subaru's guidelines maybe be not enough maintenance for the driving conditions... hence why engines sometimes fail.
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Old 06-06-2010, 10:51 PM   #11
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Quote:
Originally Posted by Subyroo2.5 View Post
Yeah dude that's a bit much.
tell me when I should have gone to 3rd in the slalom, I knew something was wrong 2 runs earlier.
better to die in a parking lot than I-85 in Atlanta.
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Old 06-07-2010, 07:23 PM   #12
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simple rule to engines: Higher rotational speed - higher friction

treat your car accordingly, just make sure you have an adequate amount of clean (enough) oil, for the most part that is all i would worry about with a stock set-up
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Old 06-07-2010, 09:15 PM   #13
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Quote:
Originally Posted by maruksai View Post
Is there anyone on here that has high mileage on a hard driven subie?
Yea me
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Old 06-07-2010, 09:33 PM   #14
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Please just make sure you do your high revving when the engine is warmed up. Cold, thick oil is what destroys engines.
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Old 06-07-2010, 09:43 PM   #15
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The engine only produces power to a certain rpm, anything after that is just wasting gas & creating friction
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Old 06-07-2010, 10:57 PM   #16
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120K on my 98 2.2L... drag raced, Road Coarsed, Auto-x, and wangan (lots of it). i have a 4EAT and yes i shift it like a manual when driving hard.

replaced Head Gaskets (due to them being blown) at 78K miles. replaced with cometics, no problems since.

transmission works just fine

while on the highways doing high speed runs yes i have pinged the rev limiter a bit... but i never ride it.

car revs to 6200RPM
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Old 06-08-2010, 09:59 AM   #17
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Quote:
Originally Posted by Bluefoton View Post
Engine wear - or the expected mileage out of a car is a function of mileage, nr of winters, maintenance, average RPM, peak RPM, the distribution of engine load over total engine's operating time, number of startups, minimum temperature, maximum temperature, commute distance and hours, traffic conditions, intervals between consecutive startups, quality of roads driven, altitude, elevation, air pressure, and humidity.
Add to that the impact of the driver's age, health, skill, marital status, temper, the personnality of your significant other and the number of kids. To make things worse, a lot of the aforementioned variables are mysteriously correlated with the others (a temperamental driver with a bitchy wife and screaming quadruplets might vent on the gas pedal more than a 85yo zen retired hippie).

Bottom line is that you won't get a satisfactory answer. Search the forum for mileage tales. Lot of cars driven like they've been stolen with litle problems and big mileages. Lot of stories of babied cars which kept having issues too.
Well said.

Quote:
Originally Posted by maruksai View Post
Is it bad to redline your engine on a daily basis? How would it affect long term engine life? Will I see 150k-200k miles?
As Bluefoton said, there's really no way to answer your last question; there are just too many variables. In basic terms, the answer to your first question is NO, it's not bad to redline the engine, even on a daily basis. That assumes, as others have said, that the engine is being properly maintained. With that said, extended high RPMs is hard on the engine, but I don't imagine that's what you're doing on a daily basis.

Quote:
Originally Posted by Mechkiller31st View Post
120K on my 98 2.2L... drag raced, Road Coarsed, Auto-x, and wangan (lots of it).
Is that some sort of JDM-tite-y0 term for street racing? Is wangan as awesome as touge?

Quote:
Originally Posted by sense of nature View Post
The engine only produces power to a certain rpm, anything after that is just wasting gas & creating friction
That's not really true. You want to rev past peak HP so that when you shift and RPMs drop you maximize the average HP.

Pat Olsen
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Old 06-08-2010, 10:57 AM   #18
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Quote:
Originally Posted by Patrick Olsen View Post
Is that some sort of JDM-tite-y0 term for street racing? Is wangan as awesome as touge?
Urban dictionary calls it high speed runs on a highway..
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Old 06-08-2010, 11:29 AM   #19
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Quote:
Originally Posted by maruksai View Post
Is there anyone on here that has high mileage on a hard driven subie?

160k Redlined daily. Runs Great!
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Old 06-08-2010, 12:01 PM   #20
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i try not not bounce of the limiter but i get very close to it every day
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Old 06-08-2010, 12:09 PM   #21
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Quote:
Originally Posted by Patrick Olsen View Post
That's not really true. You want to rev past peak HP so that when you shift and RPMs drop you maximize the average HP.
Take note.
Also: A redline a day keeps the carbon away!
There's a difference between driving spirited, which will help keep things inline, and genuinely beating on it, which will just bend crack crush and destroy your expensive toy.
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Old 06-08-2010, 10:22 PM   #22
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More issues arise when a car is driven irregularly (IE not often, and not hard) than if a car is driven hard regularly.
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Old 06-08-2010, 10:32 PM   #23
dstan
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I know I should have short shifted in my video but I was against the dreaded 89 civic and once I was in the slalom I was not shifting.

The motor that was damaged is in for a DSP build, with a higher limiter on the tune
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Old 06-08-2010, 10:55 PM   #24
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Quote:
Originally Posted by Patrick Olsen View Post


Is that some sort of JDM-tite-y0 term for street racing? Is wangan as awesome as touge?


Pat Olsen

figured i would get a little flame for that use of word but oh well.. basically yes I-94 at about 2-3AM in the morning having a little high speed fun (though 114 limited isnt exactly high speed)

the main point i am trying to make is that i have in my opinion beat the piss out of both my trans and motor and have suffered very little. though mind you i do not promote nor condone street racing and/or its lifestyle

Quote to get flamed for
"if they didnt want or expect me to drive over the posted speed limit they wouldnt have allowed my vehicle to do it in the first place"
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Old 06-08-2010, 11:13 PM   #25
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Quote:
Originally Posted by Kostamojen View Post
More issues arise when a car is driven irregularly (IE not often, and not hard) than if a car is driven hard regularly.

I can attest to this. My car's been sitting for about 1-2 weeks. It's leaking oil kinda bad. If I drive it, it doesn't leak. It makes no sense.
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