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> Safe RPM Speed
Guest_111
post Feb 5 2002, 10:00 PM
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Automatic 01'

I was wondering how many RPM's the engine can handle for someone who likes to
drive fast... i mean.. is the engine strong enouph to hangle
higher RPM's for the "speed racer"?

I also was wondering why when the heat or air on with the recycle button on.....
that the car seems to have NO power...

As always thanx again

Ryan
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Guest_111
post 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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Guest_111
post 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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Guest_111
post Feb 6 2002, 09:34 AM
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similar to my 93 del Sol S with 202,000 kms on her... I bought her in 98 with 94,000 and I have revved her to the redline with almost every shift from 1st to 2nd and often from 2nd to 3rd. Nothign detremential happend to her yet and she don't burn a drop of oil!
 
Too bad she's parked for the winter now... I just don't think she would hold up to the road salt around here. (IMG:style_emoticons/default/sad.gif)
 
 
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Guest_111
post Feb 6 2002, 10:39 AM
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I'll agree with the exception. I have a 94 civic that i've driven
"vigorously" on the street as mentioned earlier shifting into the redline
but before the fuel cutoff. Most recently i've added a turbocharger (last
summer) and run that too up to redline regularly with 7lbs of boost. I will
be turning 115k. I've owned it since about 57k. No problems whatsoever,
even with the extra power. Keep your regular oil changes and standard
maintenance and you should not have to worry much.....just stay within
reason, and don't down shift too far.

I had spoken with the acura dealer regarding the rsx when it first came out
and they said the first one they sold was for a kid who's parents purchased
it for him. He downshifted from 5th or 6th to 2nd and let the clutch
out....OUCH! The dealer is rebuilding the motor at the parents expense due
to rods flying out of the block.

Eric

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Guest_111
post Feb 6 2002, 03:27 PM
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Thank you for all the replys...

I like accellerating.... I cant remember what the cutoff is (have never reached
it)... But i like to accel fast down certain roads (doing so safely),

It is an automatic, but i have learned that if you slam the gas (from a normal
driving speed 25-50 or from takeoff) that it stays in gear until it revs
to its highest (i think 7000.. not quite sure havent hit that mark) or until you
let off the gas.... I leave it in overdrive I dont play with the shifter... I
dont want to do somthing stupid like accidently slide it up to far and land in
reverse.....im guessing thats not ganna work out to good...I just
wanted to make sure that is built ok to handle this kind of stress, b/c i know
at no means is it a racing car..


I dont know anything about gear ratio's but i was wondering how long first gear
can mathimaticly stay in first gear.. one day i "put the petal to the
metal" and when it was done shifting out of first, but yet now power from being
in second I was at 35 mph. I also noticed that this practically
drained the gas tank.. I know i may sound like a speed deamon.. but i am just
curious about this b/c i dont want to hurt the car or cause the
transmission to start having problems. (its a lease but i still like to take
care of it).


Ryan
KC8PKZ
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Guest_111
post Feb 6 2002, 04:07 PM
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Ryan,
General rule of thumb; The harder you use a tool, the faster it wears
out or breaks.
It does not matter if that tool is a pencil or an airplane.
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Guest_111
post Feb 6 2002, 04:36 PM
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>General rule of thumb; The harder you use a tool, the faster it wears
>out or breaks.
>It does not matter if that tool is a pencil or an airplane.

Good quote (never heard that befor) (being serious not sarcastic)

I understand that. but i just wanted to make sure im not harming the engine or
using it outside of its design parameters..

Thanx for the info about the AC...

Ryan
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Guest_111
post 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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Guest_111
post Feb 6 2002, 05:07 PM
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I like to excellerate fast... driving fast isn't a big issue with me... I try
not to even speed 5 over like the normal population...Its the rush of getting
up to speed as fast as Ican (taking road and traffic conditions into acount)


Ryan
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Guest_111
post 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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Guest_111
post Feb 7 2002, 08:48 AM
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10 mph UNDER the speed limit? Ouch! In my opinion that's dangerous and
should be against the law! They must be older (I'm in my forties). I'm
sure you're exaggerating.
David B
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Guest_111
post Feb 8 2002, 01:24 PM
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Just some info I discovered for you a couple of hours ago...
2000 CR-V with Manual Tranny redlines at 6,750 (approx) and Rev limiter kicks in at 7,000 RPM (again approx)
 
Ren?
 
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