High RPM at 80MPH
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High RPM at 80MPH I have a 02 civic sedan (auto). All stocks no mods with 28K. Did all scheduled service on time.
When I go at 90MPH, RPM 4.50, 80MPH, the RMP 3.75. At 70MPH, the RMP is 3.0. Why is that our 7th Gen civics run so high on the RPM? It really sounds like my civic can't go over 100MPH! At 90MPH, my engine is already roaring as if it topped speed and can't go any more???....
I drove a 94 civic (auto), I went over 100MPH, RPM 4.0 and stayed for 15sec. but the engine was shaking like hell. Now I don't recommend anyone to go try with various speed. I just want to know why are civics RPM so high?
When I go at 90MPH, RPM 4.50, 80MPH, the RMP 3.75. At 70MPH, the RMP is 3.0. Why is that our 7th Gen civics run so high on the RPM? It really sounds like my civic can't go over 100MPH! At 90MPH, my engine is already roaring as if it topped speed and can't go any more???....
I drove a 94 civic (auto), I went over 100MPH, RPM 4.0 and stayed for 15sec. but the engine was shaking like hell. Now I don't recommend anyone to go try with various speed. I just want to know why are civics RPM so high?
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Rep Power: 0 happygilmore, u sure u didnt leave the shifter in D3... cuz i have the same exact car with a/t n i've reached over 100mph without the engine screaming so hard. n the engine hardly shook. so it could be that.
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Rep Power: 0 Originally posted by Huh_Oh Sh*t!
happygilmore, u sure u didnt leave the shifter in D3... cuz i have the same exact car with a/t n i've reached over 100mph without the engine screaming so hard. n the engine hardly shook. so it could be that.
happygilmore, u sure u didnt leave the shifter in D3... cuz i have the same exact car with a/t n i've reached over 100mph without the engine screaming so hard. n the engine hardly shook. so it could be that.
No. This is pure D4.
I would have known if it was in D3 because it wouldn't allowed me to go over 50MPH even if I redline it.
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From: St. Pete Beach, FL, Florida, US
Rep Power: 0 I wouldn't wory about it because 4 cylinders always rev high at high speed, they're designed that way. My 90 Mustang GT runs about 1800 rpm @ 80 mph but the motor red lines @ 5000 rpm.
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Rep Power: 0 ok i did a lil test on my way home from a friends house. i have an '02 4dr EX with a/t.. on D3 i was able to hit 90mph at aound 6000rpm. and when i hit 100mph i was on 4th gear at about 3500rpm. so there might be something wrong with ur gears, im not for sure though.
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Rep Power: 0 It's geared so high because they have to match the power curve up with the required "roal load power" of different situations.
If they geared the vehicle to loft at 2000 rpm @ 70mph you would need to shift every time you came across a sizable hill or had the vehicle loaded at full GVW.
Likewise think about the top speed of the vehicle, I forget exactly, but the VTEC point is around 4400 RPM (around 90MPH) and the car gains power linearly from there on... So at about 90MPH if the car were at 3500 RPM instead of 4400 RPM it would not have the required power to go faster...
Does that make sense?
What I'm saying here is that if it requires 60 horsepower to go 90 mph, and the car is geared so that it only makes 60 horsepower @ 3500 RPM your top speed in the highest gear becomes 90MPH - which is obviously pathetic....
If they geared the vehicle to loft at 2000 rpm @ 70mph you would need to shift every time you came across a sizable hill or had the vehicle loaded at full GVW.
Likewise think about the top speed of the vehicle, I forget exactly, but the VTEC point is around 4400 RPM (around 90MPH) and the car gains power linearly from there on... So at about 90MPH if the car were at 3500 RPM instead of 4400 RPM it would not have the required power to go faster...
Does that make sense?
What I'm saying here is that if it requires 60 horsepower to go 90 mph, and the car is geared so that it only makes 60 horsepower @ 3500 RPM your top speed in the highest gear becomes 90MPH - which is obviously pathetic....
Last edited by mattskav; Apr 21, 2003 at 07:29 AM.
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Rep Power: 0 Originally posted by HappyGilmore
haha.
No. This is pure D4.
I would have known if it was in D3 because it wouldn't allowed me to go over 50MPH even if I redline it.
haha.
No. This is pure D4.
I would have known if it was in D3 because it wouldn't allowed me to go over 50MPH even if I redline it.
And I have done about 128 in my car on a flat strait road.
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Rep Power: 0 I know you said that your car is stock, but most likely you wouldn't have any aftermarket gauges would you? Because I know the aftermarket RPM markings are incorrect. If not, then I don't know bud...
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Autos:
3000-3200rpm @ 80mph
Topspeed 115-120mph.
If you're doing 3750rpm, then your belt might be slipping or ya..there's obviously something wrong with your motor.
3000-3200rpm @ 80mph
Topspeed 115-120mph.
If you're doing 3750rpm, then your belt might be slipping or ya..there's obviously something wrong with your motor.
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