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Safe RPM Speed |
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Feb 6 2002, 05:19 AM
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Routinely racing the engine to the red line reduces the life of the engine thus increasing wear. I think staying under 1000rpm's below the red line should suffice for reasonable safe street use. NOTE: lugging the engine routinely, say below 2000rpm is usually more detrimental to the engine than racing it to the red line. Friend's that auto cross and drag race, routinely BANG the red line, speed shift etc., or have removed/modified the engine fuel cut-off point/normal red line point have reliability problems and increased engine repairs/rebuilds. Top performance modifications and vehicles that were designed by the factory for absolute performance have more maintenance and reliability problems (e.g. Corvette etc.). If you have an automatic this shouldn't be as much a problem unless you choose the gears and defeat the automatic routinely. You ever heard that people with Type B quieter personalities usually live longer than Type A hyper personalities. They abuse their engines - laugh! SALTMAN http://www.BSALT.com
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Feb 6 2002, 09:46 AM
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I suppose that I have to be the "exception" here on this one.
Bear in mind that there a many folks who purchase Honda's for their smooth, high-revving engines.
My '89 DX, that I purchased new - I ran it in its first autocross with about 700 miles on it. Thereafter, I ran it a couple of times a month, for several years.
This is the car that I, now, drive back and forth to work.
This morning on the way to work, I shifted at the redline two different times (about 6800 rpm). Note: This has a fuel cut-off at 7000 rpm..... and yes, I've encountered it on many occasions.
MANY, MANY people drive their Civic's, CRX's, Prelude's, Integra's, etc., in this same manner!!
I change the oil every 3K miles.
I'll flip over 190K mile on it before the weekend is over.
YMMV -
David Miller dmiller@... '89 CRX DX, white, 189K miles '90 CRX Si, yellow, 46K miles '99 CR-V EX, white, 104K miles
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Feb 6 2002, 04:59 PM
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The issues are; 1 We do not know the design limits of all the components. 2 We do not know how much margin was put into the design to take into account "extreme use" like you are describing. 3 We do not know how much margin was put in the design to take into account variances within parts, production runs, etc. 4 We do not know where your particular car, and its various parts fall within that range. Now, you want to know how close you are getting to the limits of your car? Well, A whole lot closer than you would be if you drove more conservatively.
Since it is a lease, beat the heck out of it, but don't get a scratch or a ding in it and you will be fine. You sound like you drive like I do (or did).
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Feb 7 2002, 05:42 AM
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Sounds like you bought a solid 89 DX. I have two cheap co-workers, one has a 89 Honda Accord and the other an 84 Camry, one has 400K+ miles, the other 300K+ or so miles. NO ENGINE WORK besides normal maintenance (timing belt, tune-ups etc.), they both have the original auto transmissions (NO rebuilds). I notice they also routinely get 80K+ miles on a set of tires and brakes. I mostly PASS them coming to work, gentle drivers to say the least. These are their "travel to work" vehicles with 60+ one-way travel miles on the highway. You know the guys that drive 10 mph UNDER the posted speed limit. I buy a car to enjoy it, an enthusiast, doubtful I get those type of miles without more frequent repairs but I wouldn't keep a car with above 200K miles anyway. The "safe rpm speeds" were for reasonable long-term reliability based on top mechanic friends and experiences over the years. A Toyota Supra I had went through tires every couple of thousand miles, clutches etc. but it was an aggressive auto crosser with extensive modifications to the engine/suspension etc. (400+ hp). I replaced the engine twice, not a streetable vehicle either. I'm positive it would have been much more reliable in the stock set-up and driving conditions - LAUGH.
Like all makes of cars regardless of reliability records, you can get a "good" or a "not so good" vehicle, definitely sounds like your DX was a good one. A guy I knew bought a new Toyota Celica constantly ran it up to the red line, speed shifts, jack rabbit starts, street drag racing (fantastic burn-outs), no modifications, oil changes every 2500k miles, but 5 years later at 180K miles it was ready for the junk yard
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