Need help in calculating high speed run potential...

[TJR]

I agree with Unit (speedo being optimistic)...You need take in account of speedometer error. Most road tests that I've read about that measure actual speed vs indicated speed usually show a 1-3 mph difference at 60 mph. I imagine there would be a greater amount of error from the speedo reading at speeds of 130+.

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1989 lx notch
89,000 miles
bolt-ons,stock heads/cam
60'- 2.07, 8.90@78, 13.93@99

[This message has been edited by TJR (edited 06-06-2001).]

[Power]

Originally posted by 95mustanggt:
LK did you see that picture of the plane and the guys CRX! The only problem is that even when falling an object has a point where the air resistance prevents a falling object from accelerating towards the ground. It is called terminal velocity. I'm not such what it would be for a CRX, but you still can only go so fast due to air resistance!

A human freefalling in flare position falls around 120 mph, move to trim position (face down) and it increases to around 150-160 i think.

Now weight has nothing to do with how fast you fall (thanks to Isaac Newton), so in a flare position is there as much drag on me as there would be on a CRX body? Hmm....probably not. So, free-falling, would the CRX even hit 120mph??? I think not. I could be mistaken though.

I think I could run that fast if my legs where geared correctly where I could move them that quick....

[Unit 5302]

I thought in a full out dive humans could approach 200mph?

I know the Peregrine Falcon has been known to do it.

[Lizard King]

That is so funny!!!

The guy has not put one post since this morning???

[Dark_5.0]

I dont get it I can understand you doubting 175mph but 135mph is easy money.

Dont be closed minded just cause its not a mustang.

A stock crx si will go 130mph, dont talk Sh*t if you have never drove one,

An "Escort" is a POS economy car and in my opinion a CRX is a well built well engineered car that has a great tranny in the 5 speed form. 130mph is no prob for a stock si.

Optimistic my @ss the speedo is barried like no other half way through 5th gear and if anything the 135mph is a low number.

What the hell do you mean the aero dynamics wont allow 175mph There are CRX dragsters that go damn near 200 mph and run mid 7's

I dont even like my CRX but I had to come to its defense cause yall are way low on your top speed assessment of a stock CRX.



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88 mustang gt convertible bored to 306 BBk equal length headers mac cold air fender kit cowl hood nitto drag radials ford racing clutch flow masters h-pipe 160* thermostat 16 degrees of timing electric fan off 94' t-bird jacobs electronics cap and wires.
best 60 ft 2.14, best 1/8th 9.65, best 1/4 15.2 @89mph

[red82gt]

I'm still LMAO 280km/h. I've driven a CRX and I couldn't get it past 180 km on the same straight stretch that I reached (what is according to the stang analyzer) 157mph, which is 251km/h.

What would really be funny is the reaction we'd have if he somehow pulled it off.

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GT-40 heads (ported, polished, + milled), B303 cam, 1.7rr's, JE pistons, Offy intake, Carter AFB 625cfm carb, Flowtech 1 5/8" shortys, Flowtech X-pipe, MAC Flowpath exhaust, MAC pulleys, 373's, subframes, Eibachs+Tokicos, B&M ripper, FMS Clutch, Zoom Quadrant+cable, 17" CSA Ultra rims, 235/45ZR17 Yokohama AVS S4's, MSD 6A ignition+coil, FMS 9mm wires, Carbed, Naturally Aspirated, and Nasty!

[Dark_5.0]

Ok are we talking about an 88-91 crx si. Cause if its not he wont hit 120, IMO.

Ask yourself this if the crx is such a slow @ss shoebox no matter what you do to it what about the "Honda CRX SI R" that was only produced in Japan.

160hp @7600
redline 8200
111 lb-ft @7000

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88 mustang gt convertible bored to 306 BBk equal length headers mac cold air fender kit cowl hood nitto drag radials ford racing clutch flow masters h-pipe 160* thermostat 16 degrees of timing electric fan off 94' t-bird jacobs electronics cap and wires.
best 60 ft 2.14, best 1/8th 9.65, best 1/4 15.2 @89mph

[95mustanggt]

Originally posted by 5.0 HO:
I dont get it I can understand you doubting 175mph but 135mph is easy money.

A stock crx si will go 130mph, dont talk Sh*t if you have never drove one,

Optimistic my @ss the speedo is barried like no other half way through 5th gear and if anything the 135mph is a low number.

We doubt 175mph because it is impossible. 135 mph might be possible with a slight downhill slope but it would definately NOT be "easy money". I don't need to drive one to speak confidently on this and I'm not speaking sh*t. I'm not being bias, only saying what probable.

Originally posted by 5.0 HO:

Dont be closed minded just cause its not a mustang.

Physics does not care whether you drive a mustang, CRX, school bus, or a tricycle.

Originally posted by 5.0 HO:

An "Escort" is a POS economy car and in my opinion a CRX is a well built well engineered car that has a great tranny in the 5 speed form. 130mph is no prob for a stock si.

This maybe, but once again 130 mph with "no prob:?? I don't care if the f'ing car was built by NASA, quality don't make it any faster.

Originally posted by 5.0 HO:

What the hell do you mean the aero dynamics wont allow 175mph There are CRX dragsters that go damn near 200 mph and run mid 7's

We're not saying aero dynamics aren't going to allow travel faster than 175 mph. You see when you "free fall" you have 2 basic forces acting on your body. 1. Gravity pushing you down 2. Air resistance pushing you up (effectively). So because force is a vector, you sum the 2 forces. Since gravity does not change (well it does but for all practical purposes we'll assume it doesn't) the force downward stays constant. When the air resistance equals gavity, no more acceleration! That means a fixed velocity (terminal velocity).

In a drag car, the forces driving you forward are a H*ll of a lot higher than gravity, therefore the "terminal velocity" is much higher. Even a 1000 HP car has a terminal velocity due to air resistance, it's just alot higher.

I'm not sure of your education, but that is elementry physics my good man.

Originally posted by 5.0 HO:

I dont even like my CRX but I had to come to its defense cause yall are way low on your top speed assessment of a stock CRX.

I'm not saying you are a big CRX lover or import lover. I'm sure the CRX is a fine car. I'm not bashing any car here. And yes maybe there is error in my estimates. I for one have not actually sat down and done the engineering behind this problem (yet ). But given that several people all seem to agree on similar numbers, all coming from different educational background, countries and car preference (even the other import guys doubt this can be done, and I would guess they are not bias 'cause it's not a mustang).

And Yes red it would be real funny if this guy pulled it off , but he'd be doing something fishy to get it done.

[95mustanggt]

Originally posted by Unit 5302:
It's terminal velocity would be directly related to it's coefficient of drag.

That's because the coefficient of drag is used to calculate the air resistance

[Dark_5.0]

Ok man education has nothing to do with it you are trying to talk intelligently about a subject that you have no experience in You obviously have never driven a crx si 88-91 or you would be on my side 130mph is easy with a stock si.

Some of you are really funny " downhill with a 45mph tailwind" Ha Ha Ha!

I think some of you have driven the crx hf and that car is damn slow.

The SI and SI-R are a whole nother ball game they definiately can go 130. I bet the SI-R can do 145-150 stock.

My CRX is a 1.6L 16V DX and with the mods it has I can out run an SI, "Barely"

I dont know how many of you watch the high speed pursuits on TV but on one of those a black Honda CRX SI was evading police @136mph.

and far as I could tell the ground was flat


I am talking from experience. You can talk about physic and gravity all you want.

I guarantee you one thing if you ever drive a 88-91 Honda CRX SI you will feel pretty embarrassed for doubting it will do 130mph cause to tell you the truth it is not that hard for the car to do."BEEN THERE DONE THAT MANY A TIME" "I HAVE A HANDS ON EDUCATION MY FRIEND"

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88 mustang gt convertible bored to 306 BBk equal length headers mac cold air fender kit cowl hood nitto drag radials ford racing clutch flow masters h-pipe 160* thermostat 16 degrees of timing electric fan off 94' t-bird jacobs electronics cap and wires.
best 60 ft 2.14, best 1/8th 9.65, best 1/4 15.2 @89mph

[Lizard King]

He want's to lower the bet to 260km/h now... hehehe, he is getting scared. 260km/h = 162.5MPH ... there is no way eh?

[Dark_5.0]

In my opinion "lizard" anything over 140 would be impossible for a stock CRX SI. This guy obviously doesnt know that much about speed.

Do you get to inspect his car before his attempt.

175mph No Way!, 162mph No Way!

He would have to do major aero dynamic mods and power mods to reach 160+mph.

Should be easy money for you. at least buy the guy a beer to ease his pain afterwords.

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88 mustang gt convertible bored to 306 BBk equal length headers mac cold air fender kit cowl hood nitto drag radials ford racing clutch flow masters h-pipe 160* thermostat 16 degrees of timing electric fan off 94' t-bird jacobs electronics cap and wires.
best 60 ft 2.14, best 1/8th 9.65, best 1/4 15.2 @89mph

http://www.prestage.com/carmath/calc_hpformph.asp


check out this link, it gives some cool info on top MPH...

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Black, 84 GT, T5, ground effects, shorty headers, dual exh., rear spoiler from a 87.. In the works; 4:10's, 89 ported heads, edelbrock Performer, matched cam and holley carb (?? size)

or this one for maintained speed....
http://www.prestage.com/carmath/calc_HPtoSustainMPH.asp

[95mustanggt]

Originally posted by 5.0 HO:
In my opinion "lizard" anything over 140 would be impossible for a stock CRX SI. This guy obviously doesnt know that much about speed.

175mph No Way!, 162mph No Way!

I'd have to say that I agree!


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Driving: 1998 F-150
Far way in Edmonton==>
1995 Mustang GT

I checked some #'s on the net.. a CRX SI's engine is 1590cc/96 cu.in, weighs 2,174 lbs, @ 6000 rpm it produces 108 hp and 100 ft/lb of torque at 5000 rpm...


to reach 110 mph, the car needs 224 hp

to reach 130 mph, the car needs 369 hp

to reach 170 mph, the car would need 826 hp

if these #'s are accurate, there is no way... unless the guy installed a jet engine.

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Black, 84 GT, T5, ground effects, shorty headers, dual exh., rear spoiler from a 87.. In the works; 4:10's, 89 ported heads, edelbrock Performer, matched cam and holley carb (?? size)

[red82gt]

From Road&Track, september 1991:
91 crx si, top speed: 125mph (200km/h) , that's a lot of mods away from 260km/h or 162.5mph.
I'm still laughing in disbelief...

[Dark_5.0]

Originally posted by jerryIII:
I checked some #'s on the net.. a CRX SI's engine is 1590cc/96 cu.in, weighs 2,174 lbs, @ 6000 rpm it produces 108 hp and 100 ft/lb of torque at 5000 rpm...


to reach 110 mph, the car needs 224 hp

to reach 130 mph, the car needs 369 hp

to reach 170 mph, the car would need 826 hp

if these #'s are accurate, there is no way... unless the guy installed a jet engine.

____________________________________________


Are you a phuckin idiot or what a 224hp crx would easily do 160.!!!!!!!!!!

And a 826hp crx would do way over 200mph "IN THE 1/4 mile"!!!!!!

You are a """Retard""""!!!! !!!!!!!!

Man did you sound dumb



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88 mustang gt convertible bored to 306 BBk equal length headers mac cold air fender kit cowl hood nitto drag radials ford racing clutch flow masters h-pipe 160* thermostat 16 degrees of timing electric fan off 94' t-bird jacobs electronics cap and wires.
best 60 ft 2.14, best 1/8th 9.65, best 1/4 15.2 @89mph

http://www.prestage.com/carmath/calc_hpformph.asp


Quote;
"Are you a phuckin idiot or what a 224hp crx would easily do 160.!!!!!!!!!!

You are a """Retard""""!!!! !!!!!!!!

Man did you sound dumb"


obviously you missed the part where I said; "If these #'s are accurate, there is no way"


I went to the above website and put in the #'s, and reported the results.... that makes me a 'retard'?? funny how that works... no need to be a prick about it...


and P.s. I was thinking in terms of the real world, how would you propose to get 224 horse out of a 96 CI 4 cylinder??? and still be able to drive it on the street and handle it to 160+mph???

[Dark_5.0]

Never once did I say that a stock crx would do 160mph.

826hp to go 170mph!!! HA HA HA!

I said mine will go 135mph.

You are the prick saying it takes 224 hp to go 130mph on a 2200lb car FUQTARD.

I am almost positive that the "CRX SI R" will go 160 and handle the speed people are making 700hp with a 1.6L engine on the import drag racing circuit.

Your statements were the most off the wall uneducated, ignorant and outragous thing I have ever heard dont try to take it back now cause you posted that dumb sh!t not me. So dont get mad when I call you out on it.

I could even make the "SHORT YELLOW BUS" you used to ride go 170mph with 826hp.

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88 mustang gt convertible bored to 306 BBk equal length headers mac cold air fender kit cowl hood nitto drag radials ford racing clutch flow masters h-pipe 160* thermostat 16 degrees of timing electric fan off 94' t-bird jacobs electronics cap and wires.
best 60 ft 2.14, best 1/8th 9.65, best 1/4 15.2 @89mph

[This message has been edited by 5.0 HO (edited 06-07-2001).]