Top Speed?
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Very low humidity, low pressure, decent temp (not too cold nor too hot), tail wind, etc.....all happens on this planet.alderran said:
To go 140 mph, it takes 130hp to overcome aerodynamic drag, and 12hp to offset rolling resistance.
So you need 142hp at the pavement at that speed, and the engine is only running 4600 rpms(4th gear), and at full power the engine only makes 205 hp there. So with only 75% drivetrain efficency 157.5hp>142 hp, yeah 140 is going to happen.
To go 145, 145hp for aero drag, 12.5 hp for RR. So for 145 mph=4750 rpms, and here the engine is in its worst state, the short runners are not open, and there is poor resonance charging, so here the engine is still only making 210hp, so 75% of that is only 157.5, drag limited.
But this assumes only 2.2 meters of swept area, and a Cd of 0.30, Chrysler probably used Cw in the marketing of the Intrepid, so Cd is probably 0.33.
So for 140mph (with 0.33 Cd) 155 hp (drag)/205 =75.6% and that is inline with current dyno results
So you need 142hp at the pavement at that speed, and the engine is only running 4600 rpms(4th gear), and at full power the engine only makes 205 hp there. So with only 75% drivetrain efficency 157.5hp>142 hp, yeah 140 is going to happen.
To go 145, 145hp for aero drag, 12.5 hp for RR. So for 145 mph=4750 rpms, and here the engine is in its worst state, the short runners are not open, and there is poor resonance charging, so here the engine is still only making 210hp, so 75% of that is only 157.5, drag limited.
But this assumes only 2.2 meters of swept area, and a Cd of 0.30, Chrysler probably used Cw in the marketing of the Intrepid, so Cd is probably 0.33.
So for 140mph (with 0.33 Cd) 155 hp (drag)/205 =75.6% and that is inline with current dyno results
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Maybe it's the intake that helps me get up there pretty easily??????YB Normyl said:
I know what it's like to have lots of problems......I took my 2.2L Aries up to 170km/h or so a couple of times
Speedo only went to 140km/h ........the needle went right past that and I buried that ***** It took a LONG time to accelerate after 145km/h...........same deal with the low speedo on the Intrepid, speedo only goes to 200km/h and I've had it right off of the dial and pretty much buried a couple of times My 96 3.5 would hit the fuel shut-off about 108 mph.I bought a reman. engine controller from my local dealer (part # r5012677aa).This was in Aug,2001.No more fuel shut off!This was listed as an unlimited controller.However,this car seems down a bit on H.P.Around 120 or so she quits pulling.Can't recall what R.P.M. I was turning.
The 2000 R/T is begging for the police speedo! Max R.PM. in O.D. that I've seen is around 4450.Any one qot an idea what M.P.H. that works out to? Stock tires(Z-rated).
The 2000 R/T is begging for the police speedo! Max R.PM. in O.D. that I've seen is around 4450.Any one qot an idea what M.P.H. that works out to? Stock tires(Z-rated).
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I've hit 119 MPH in my car, no sign of a govenor. I run H rated tires, so thats pretty much their limit. I didn't want to kill the tread on my tires, or tempt them to rupture etc.
For your information the speedo on my Eagle Vision was 240 kilometers per hour and although I have a 240 kph speedo for the Trep, there's no need to put it in til my 108 mph limiter comes off. Other than the driver of the Stealth which obviously had a limiter, I don't have any proof. Maybe when the Trep is unlimited I'll remember to bring a camera.alderran said:
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Does anyone know for sure whether or not a 1996 Dodge Intrepid base model (non-ES) with a 3.5 liter engine has a fuel-cutoff deal at a certain speed? The reason I ask is because I don't know what having fuel stopped while driving would do to the car if anything. Does it just limit the fuel by not allowing more to be pumped at a certain point or would the engine shut off (hmm, in gear car - engine running + motion = bad times?) or does it shut off and disengage the transmission driving the car, putting it in a state of neutral until one slows down to restart?:dozeoff:
Let me say that if I were doing 65 mph on my motorcycle and hit the kill switch that I would have some SERIOUS problems. (Don't worry, I wouldn't harm my '86 Yamaha XT600 and surely don't want to harm the 'trep either - I just want to make sure noble 'trep won't get hurt when we get frisky and top her out)
Let me say that if I were doing 65 mph on my motorcycle and hit the kill switch that I would have some SERIOUS problems. (Don't worry, I wouldn't harm my '86 Yamaha XT600 and surely don't want to harm the 'trep either - I just want to make sure noble 'trep won't get hurt when we get frisky and top her out)
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Ummmmmm it's called a governer, and yes you do have one, probably around 108 or 118 MPH...........no it won't harm your car to hit the governer, it just won't let you go faster, it doesn't shut off the fuel, your car still runs, it just won't let it accelerate past the limit.
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I've read numerous articles and some posts on di.net..that said some 93-97 Intrepid ES's did not have a speed limiter they came equipped with a special handling and suspension option that included Michelin v rated tires.....these cars are supposed to be capable of 150 mph.
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if you have a governor on your car you will know it when you hit it for the first time because youll freak out and think you threw a rod or something.. lol
anyway i think 3.3 cars should be able to break 120, ive hit around 125 in my dynasty, and the lh cars aerodynamic advantage should overcome the extra weight easily. weight doesnt have a huge effect on top speed, not near as much as drag and power.
h rated tires are rated for 130 btw.
and tiregod, do you come to san antonio often? we may have to meet up, maybe well get argus in on it.
anyway i think 3.3 cars should be able to break 120, ive hit around 125 in my dynasty, and the lh cars aerodynamic advantage should overcome the extra weight easily. weight doesnt have a huge effect on top speed, not near as much as drag and power.
h rated tires are rated for 130 btw.
and tiregod, do you come to san antonio often? we may have to meet up, maybe well get argus in on it.
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You cant't judge a cars speed by the speedometer.....I was in an argument with a guy about his VW Fox.....it had a 120 mph speedometer and I know it couldn't hit that with it's 1.8 L.......besides, remember when the Camaro's and Corvettes had 85 mph speedometers...lol.....does that mean they could only go 85? Of course not. As far as the Intrepid cop car, it's no faster than an R/T which tops out at 139 MPH......
So the question is why do American car companies like to put in speedo's that show top speeds which are below the capability of the car? I don't understand it and it's pretty much only American automakers that do that.
I've heard my new car will do low 150's for a top speed and the speedo goes to 160... which makes sense to me.
I've heard my new car will do low 150's for a top speed and the speedo goes to 160... which makes sense to me.
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the same reason they put speet limiters in cars, so as to not encourage speeding...if someone drives faster than they should and is in an accident, right away the american way is to sue the manufacturer, after all it's obviously their fault because they made a car that goes too fast and put a speedometer in that showed possible top speed, tempting the person to drive that fast...alderran said:
I understand the speed limiter which is related to the fact that the auto manufacturer is afraid that if you exceed the speed rating on the tire and it blows that you will sue them with the claim how the hell was I supposed to know... blah blah blah.MICKEY88 said:
But not showing your speed doesn't discourage or stop speeding. It just stops you from seeing how fast you are going... what I am not going to sue Dodge because why... because I crashed at 118 so I don't sue but if I crash at 122 and the speedo... WTF are you talking about?
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