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The power you will need to obtain speeds in the Celica #295598 Oct 9, 6:41am Oct 9, 6:41am
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The power you will need to obtain speeds in the Celica
I came across a very interesting calculation that works out the power needed by a car to obtain certain speeds. It varies for each car because of the different drag co-efficient for each particular body shape. A Celica with stock body kit is as follows

140mph = 190 bhp
150mph = 233 bhp
160mph = 281 bhp
170mph = 328 bhp
180mph = 399 bhp
190mph = 476 bhp
200mph = 544 bhp
210mph = 641 bhp
220mph = 735 bhp
230mph = 838 bhp
240mph = 950 bhp
250mph = 1074 bhp
300mph = 1862 bhp
500mph = 8644 bhp
1000mph = 69,186 bhp

The calculation can be applied to any car. Simply divide the cars speed by the current top speed

so for the Celica to obtain 160mph its 160/140 = 1.14

you then cube the 1.14 giving 1.48

you then multiply the 1.48 by the current power so 1.48 x 190bhp = 281 bhp

Its supposedly accurate to within a few bhp. Interesting though!


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Re: The power you will need to obtain speeds in the Celica [Re: Veilside_300] #295599 Oct 9, 6:44am Oct 9, 6:44am
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1000mph = 69,186 bhp


thats my new goal spineyes


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Re: The power you will need to obtain speeds in the Celica [Re: JBing] #295600 Oct 9, 6:45am Oct 9, 6:45am
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Don't forget the high speed tires! happywink


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Re: The power you will need to obtain speeds in the Celica [Re: Veilside_300] #295601 Oct 9, 7:15am Oct 9, 7:15am
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Wouldn't things like weight affect this however?


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Re: The power you will need to obtain speeds in the Celica [Re: XxMerlinxX] #295602 Oct 9, 7:22am Oct 9, 7:22am
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weight deals mostly with acceleration (why semi trucks have 17 speed transmisons)

but also my 450 pound bike does 130 with no proplem with only 90 hp


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Re: The power you will need to obtain speeds in the Celica [Re: drkramm] #295603 Oct 9, 7:48am Oct 9, 7:48am
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that calculation doesn't make sense - that's saying my GT can't hit 140mph? is that right?


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Re: The power you will need to obtain speeds in the Celica [Re: BigTony] #295604 Oct 9, 7:52am Oct 9, 7:52am
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Re: The power you will need to obtain speeds in the Celica [Re: Clos] #295605 Oct 9, 7:55am Oct 9, 7:55am
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I thought the GT's top speed was 130ish?

Re: The power you will need to obtain speeds in the Celica [Re: sbocaj55] #295606 Oct 9, 8:10am Oct 9, 8:10am
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no. your GT will not hit 140mph. the max speed of a GT is 127mph.

just like the book says

127/140 = 0.907

cubed = 0.746

0.746 x 190 bhp = 141 bhp !!

Pretty clever huh?


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Re: The power you will need to obtain speeds in the Celica [Re: Veilside_300] #295607 Oct 9, 8:40am Oct 9, 8:40am
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Re: The power you will need to obtain speeds in the Celica [Re: Virgilson] #295608 Oct 9, 9:58am Oct 9, 9:58am
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Its amazing at top end how much difference a good tail wind makes. If the wind is 40MPH, you can add 30MPH to your top speed. thumbsup

Re: The power you will need to obtain speeds in the Celica [Re: Haulin_A_Doo] #295609 Oct 9, 10:01am Oct 9, 10:01am
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my head hurts! frown

Re: The power you will need to obtain speeds in the Celica [Re: TimO] #295610 Oct 9, 11:37am Oct 9, 11:37am
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My celica has 180 bhp. I can hit 140. You math is flawed. Furthermore, my celica could probably go faster than 140 if I wasn't limited by the fuel cut-off. thumbsup

Re: The power you will need to obtain speeds in the Celica [Re: Rocketman] #295611 Oct 9, 11:53am Oct 9, 11:53am
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i hit 135 in my gt so yah hell yah gts can beat by
that alot

Re: The power you will need to obtain speeds in the Celica [Re: ravadude338] #295612 Oct 9, 11:56am Oct 9, 11:56am
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That coefficient is geared towards HP when it should be geared towards torque.

Re: The power you will need to obtain speeds in the Celica [Re: Veilside_300] #295613 Oct 9, 12:04pm Oct 9, 12:04pm
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Originally Posted by Veilside_300
Don't forget the high speed tires! happywink

you wannt need the tiers you are then flying

Re: The power you will need to obtain speeds in the Celica [Re: oas] #295614 Oct 9, 1:49pm Oct 9, 1:49pm
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not to mention the rpms will scream past 20k!


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Re: The power you will need to obtain speeds in the Celica [Re: AzNRaCeR] #295615 Oct 9, 2:19pm Oct 9, 2:19pm
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Yeah, I've had my needle on 150mph but I'm not dumb enough to believe the car is actually travelling at 150mph. Max speed T Sport = 140mph - 2mph for the GTS and 127mph for the GT.

The top speed is quoted as 127 mph on the GT for a reason. You were not actually doing 135 mph because the speedometer said you were.

The co efficient is geared towards horsepower for a reason. A diesel engine might have 200 lb/ft of torque but a top speed of only 115mph.

The calculation is not my own but was printed in EVO magazine.


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Re: The power you will need to obtain speeds in the Celica [Re: Veilside_300] #295616 Oct 9, 2:37pm Oct 9, 2:37pm
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how about if you drop it from a plane?? couldnt it reach 100 miles an hour without any horse power??

Re: The power you will need to obtain speeds in the Celica [Re: Haulin_A_Doo] #295617 Oct 9, 4:37pm Oct 9, 4:37pm
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Originally Posted by Haulin_A_Doo
Its amazing at top end how much difference a good tail wind makes. If the wind is 40MPH, you can add 30MPH to your top speed. thumbsup


^^^ wtf

Re: The power you will need to obtain speeds in the Celica [Re: sxyimports125] #295618 Oct 9, 5:07pm Oct 9, 5:07pm
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This explains why the $20k Honda Insight has so much troubles hitting 70mph... its only got 67hp spineyes


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Re: The power you will need to obtain speeds in the Celica [Re: isaac] #295619 Oct 9, 5:32pm Oct 9, 5:32pm
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I always like this s**t talk about top end, especially in a stock or relatively stock 7th gen Celica. I see no proof of a GTS going over 140. I don't need proof and I know a GT won't go 135 mph. I have said before, that I'm going to give proof. Until my car is ready, I have some suspension problems, then it's on all night until I reach the max.
Our Celica's weren't meant for top end speed anyways. That's like asking a school bus full of children to do the skid pad in .95 G. What about the drag coefficient in the formula? "You" stated before hand, but where is the formula to determine this on top of the gross HP? Is that added on? It can't be. There is a mathematical formula to add to this one.

Re: The power you will need to obtain speeds in the Celica [Re: hephaestus] #295620 Oct 9, 6:24pm Oct 9, 6:24pm
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Cars not meant for top end speed don't have overdrive. All 7th gen celi's have overdrive. thumbsup

sxyimports125, windspeed has everything to do with the top end of the car. Aerodynamics are the limiting factor. A plane doing 200MPH air speed in a 40MPH tail wind is going 240MPH ground speed. The same airplane flying in the opposite direction at 200MPH air speed with a 40MPH head wind is going 160MPH ground speed. Its simple really. If you have a strong headwind you can deduct the windspeed right off the top of your top end speed of your car. The opposite is true if you have a tail wind.

Go out on a real windy day on a flat stretch of highway that is running parallel with the wind & see for yourself.

Re: The power you will need to obtain speeds in the Celica [Re: Haulin_A_Doo] #295621 Oct 9, 7:16pm Oct 9, 7:16pm
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Are cars weren't meant for the drag strip. I don't care for overdrive. What the hell is that? A button pushed on auto's for an extra gear? Most cars that I've driven have an overdrive other than manual and that's dating back some years fool. You didn't listen. Read again.

Re: The power you will need to obtain speeds in the Celica [Re: hephaestus] #295622 Oct 9, 7:24pm Oct 9, 7:24pm
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Generally speaking, overdrive (O/D) is the highest gear in the transmission. On most cars the automatic transmission has 3 speeds and Overdrive (forth speed). Overdrive allows the engine to have less rpm with higher speed in order to have better fuel efficiency. When you switch it on, you allow the transmission to shift into overdrive mode after the certain speed is reached (usually 30 - 40 mph depending on the load). When it's off, you limit transmission shifting by third speed.

In normal driving condition the overdrive should be always on.

You may need to switch it off if you drive in mountains area.

The automatic transmission automatically shifts from OD to the 3-th gear when it feels more load. When it feels less load it shifts back to the O/D, but under certain conditions, e.g: driving uphill or towing a trailer, the transmission can not decide to stay in OD or to shift into 3-th speed and it starts to shift back and forth. That's the time you may switch it off and help the transmission to decide.

You also may need to switch it off when you want to slowdown using the engine braking, for example, driving downhill. [For more details, check your owner's manual]


see also...
http://auto.howstuffworks.com/automatic-transmission8.htm

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Re: The power you will need to obtain speeds in the Celica [Re: isaac] #295623 Oct 9, 7:35pm Oct 9, 7:35pm
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good info

Re: The power you will need to obtain speeds in the Celica [Re: hephaestus] #295624 Oct 9, 9:46pm Oct 9, 9:46pm
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Originally Posted by hephaestus
Are cars weren't meant for the drag strip. I don't care for overdrive. What the hell is that? A button pushed on auto's for an extra gear? Most cars that I've driven have an overdrive other than manual and that's dating back some years fool. You didn't listen. Read again.


The drag strip and top end speed have nothing to do with each other unless you are running an 8 second car, fool.

Re: The power you will need to obtain speeds in the Celica [Re: Haulin_A_Doo] #295625 Oct 9, 9:48pm Oct 9, 9:48pm
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do you guys both mean "tool" confused
...we are talking about automotive stuff, right spineyes


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Re: The power you will need to obtain speeds in the Celica [Re: isaac] #295626 Oct 9, 10:13pm Oct 9, 10:13pm
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Originally Posted by isaac
do you guys both mean "tool" confused
...we are talking about automotive stuff, right spineyes


That's right ... tool, that's it. rofl

Re: The power you will need to obtain speeds in the Celica [Re: Haulin_A_Doo] #295627 Oct 10, 2:23am Oct 10, 2:23am
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Getting off subject a bit there. I don't think there was anything else to add to the formula. It must be pretty accurate because when I used it with the top speed of 127mph for the Celica GT it came up with 140bhp.

It probably gets a little less accurate over 180mph, but only by a few bhp I should imagine. The wind shouldn't really be considered as a factor nor should driving down a steep hill. A cars true max speed will be found on a perfectly flat stretch of road (one with a nice surface) with no wind. And I'm sorry to say it but with 190 bhp the Celica won't get over 140mph. frown


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Re: The power you will need to obtain speeds in the Celica [Re: Veilside_300] #295628 Oct 10, 5:05am Oct 10, 5:05am
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no wind huh ... well this is bout as pratical as a lot of physics proplems...


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Re: The power you will need to obtain speeds in the Celica [Re: drkramm] #295629 Oct 10, 5:28am Oct 10, 5:28am
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Yah if you are at sea level the air is a lot thicker. Jets are a lot slower at sea level.

Re: The power you will need to obtain speeds in the Celica [Re: drkramm] #295630 Oct 10, 5:28am Oct 10, 5:28am
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yea, and wind doesn't have much effect on the ground. Unless its a hurricane or tropical storm the wind is like 5mph. Who cares about top end speed? We all know it takes like 5 min to reach 120mph. Our cars are slow. Just stick to the back roads, they are much more fun to drive anyway.


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Re: The power you will need to obtain speeds in the Celica [Re: 00celica00gt] #295631 Oct 10, 5:43am Oct 10, 5:43am
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I would say my GT would take about a minute at most to reach 120MPH.

Re: The power you will need to obtain speeds in the Celica [Re: Haulin_A_Doo] #295632 Oct 10, 6:13am Oct 10, 6:13am
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Considering there are basically two variations of the 7th Gen Celica, there are a huge amount of conflicting views about top end speed and acceleration on these boards.

A lot of it might be down to the fact that some people insist on bolting crappy looking body kits to what is essentially a nice looking car. God only knows how much a shitty front end like the Blitz must slow the Celica down over 100mph. And people who insist on fitting rear spoilers to the Celica that look like they belong on a fucking boeing 747 commercial jet can kiss goodbye to 20mph off their top end. Performance wise the best thing you could probably do is lower the car as far as you can without effecting ride quality too much and take off the rear spoiler. Making the car look like it belongs to Batman and fucking Robin in my opinion is just ruining a nice car. If you're not happy with the way it looks then you should sell it and buy something that you like the look of from the factory.


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Re: The power you will need to obtain speeds in the Celica [Re: Veilside_300] #295633 Oct 10, 7:45am Oct 10, 7:45am
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Is it just me or is everyone blowing this way the hell out of proportion? He posted a simple relative equation, and yall starting thinking about wind speed, air pressure,elevation, aerodynamics and blah blah

Re: The power you will need to obtain speeds in the Celica [Re: sickcelica696] #295634 Oct 10, 9:25am Oct 10, 9:25am
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LOOK my GT stock with no engine mods has gone 142. i had it clocked with a radar gun as well. so somethings wrong.

Re: The power you will need to obtain speeds in the Celica [Re: cja252] #295635 Oct 10, 9:37am Oct 10, 9:37am
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its like in physics there are gonna be certain set constants in the equaiton that are gonna throw stuff off like acceleration due to gravity doesn't take into effect wind or restaince so its only there for a basic view


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Re: The power you will need to obtain speeds in the Celica [Re: cja252] #295636 Oct 10, 9:37am Oct 10, 9:37am
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max speed for a GT is 137.5 mph, not 127...


137.5 is based on stock tires size, final gear ratio and horsepower.

Re: The power you will need to obtain speeds in the Celica [Re: spaztikid] #295637 Oct 10, 10:08am Oct 10, 10:08am
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QUOTED OFF THE TOYOTA UK WEBSITE:

The Celica's 1.8 litre four-cylinder engine produces an exciting 140 bhp at 6,400 rpm and 172 Nm maximum torque at 4,200 rpm. That translates into a 0 - 62 mph acceleration time of just 8.7 seconds and a top speed of 127 mph. With the modified engine that powers the exciting Celica T Sport, the figures are even more impressive - 62 mph in just 7.2 seconds and a top speed of 140 mph, where permitted.


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Re: The power you will need to obtain speeds in the Celica [Re: Veilside_300] #295638 Oct 10, 4:40pm Oct 10, 4:40pm
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i hit 250 in my celica rofl

Re: The power you will need to obtain speeds in the Celica [Re: Haulin_A_Doo] #295639 Oct 10, 5:57pm Oct 10, 5:57pm
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Originally Posted by Haulin_A_Doo
Originally Posted by hephaestus
Are cars weren't meant for the drag strip. I don't care for overdrive. What the hell is that? A button pushed on auto's for an extra gear? Most cars that I've driven have an overdrive other than manual and that's dating back some years fool. You didn't listen. Read again.


The drag strip and top end speed have nothing to do with each other unless you are running an 8 second car, fool.

Exactly my point.

Re: The power you will need to obtain speeds in the Celica [Re: Veilside_300] #295640 Oct 10, 5:58pm Oct 10, 5:58pm
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New Jersey
Originally Posted by Veilside_300
Considering there are basically two variations of the 7th Gen Celica, there are a huge amount of conflicting views about top end speed and acceleration on these boards.

A lot of it might be down to the fact that some people insist on bolting crappy looking body kits to what is essentially a nice looking car. God only knows how much a shitty front end like the Blitz must slow the Celica down over 100mph. And people who insist on fitting rear spoilers to the Celica that look like they belong on a fucking boeing 747 commercial jet can kiss goodbye to 20mph off their top end. Performance wise the best thing you could probably do is lower the car as far as you can without effecting ride quality too much and take off the rear spoiler. Making the car look like it belongs to Batman and fucking Robin in my opinion is just ruining a nice car. If you're not happy with the way it looks then you should sell it and buy something that you like the look of from the factory.

Right on there brother!

Re: The power you will need to obtain speeds in the Celica [Re: hephaestus] #295641 Oct 10, 6:07pm Oct 10, 6:07pm
Joined: Oct 2003
Posts: 1,226
New Jersey
H
hephaestus
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hephaestus
H
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New Jersey
I'm still hearing my Gt hit 140 and this and that, but where's the proof? I hit 135 ish in my GTS, but I don't have proof and it took a hell of a long stretch of road to do that in the first place. For me doing it twice will require my car to be at the optimal and no fear of cops because of my trouble with the law before. Plus I need a long stretch of highway road. That I have covered. Who here wants to back it up. Nobody. So it's all heresay. And I know that most talk is crap. Back it up or shut up.
Thanks for the explanation on the auto overdrive Isaac. I do appreciate that.

Re: The power you will need to obtain speeds in the Celica [Re: hephaestus] #295642 Oct 10, 6:54pm Oct 10, 6:54pm
Joined: Nov 2002
Posts: 1,073
NW, PA
grcelica
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2001 Toyota Celica GT
grcelica
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2001 Toyota Celica GT

Joined: Nov 2002
Posts: 1,073
NW, PA
to those that make outrageous top speed claims, you need to pander that somewhere else. We all own and drive these vehicles and we all know what they will and won't do. save the BS for a different board.

Re: The power you will need to obtain speeds in the Celica [Re: grcelica] #295643 Oct 11, 7:46am Oct 11, 7:46am
Joined: Jul 2004
Posts: 62
Orlando
RedCelly00
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2000 Toyota Celica GT
RedCelly00
Member
2000 Toyota Celica GT

Joined: Jul 2004
Posts: 62
Orlando
I hit one jillion mph who's gonna argue that?


"Have you ever noticed that anybody going slower than you is an idiot, and anyone going faster than you is a maniac?"
George Carlin
Re: The power you will need to obtain speeds in the Celica [Re: Rocketman] #295644 Oct 11, 7:51am Oct 11, 7:51am
Joined: Sep 2003
Posts: 3,077
Saint Louis, MO
slidr
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2000 Toyota Celica
slidr
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2000 Toyota Celica

Joined: Sep 2003
Posts: 3,077
Saint Louis, MO
Originally Posted by Rocketman

My celica has 180 bhp. I can hit 140. You math is flawed. Furthermore, my celica could probably go faster than 140 if I wasn't limited by the fuel cut-off. thumbsup


180 is not the actual crank horsepower of the Celica engine.

How else would N/A Celicas dyno over 180 to the wheels alone?

Actual engine power at the crank is likely over 200 hp.

Most if not all car companies under-rate the output of their engines for legal reasons, and those who don't pay for it sooner or later.

Case and point...The Cobra and RX-8 just to name a few.


Aqua Teen Hunger Force...number one in the hood, G
Re: The power you will need to obtain speeds in the Celica [Re: slidr] #295645 Oct 11, 9:52am Oct 11, 9:52am
Joined: Sep 2003
Posts: 2,242
Fontana, CA
Lucky_317
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2000 Toyota Celica
Lucky_317
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2000 Toyota Celica

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Posts: 2,242
Fontana, CA
It's not very accurate because it doenst leave room to compensate for other factors that play a role in top end but interesting thought none the less. I'd say its got a good entertainment value only. thumbsup


Best 60' 1.959 best 1/4 - 13.7 @ 101mph
Re: The power you will need to obtain speeds in the Celica [Re: hephaestus] #295646 Oct 11, 9:54am Oct 11, 9:54am
Joined: Sep 2003
Posts: 2,242
Fontana, CA
Lucky_317
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2000 Toyota Celica
Lucky_317
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2000 Toyota Celica

Joined: Sep 2003
Posts: 2,242
Fontana, CA
Originally Posted by hephaestus
Originally Posted by Haulin_A_Doo
Originally Posted by hephaestus
Are cars weren't meant for the drag strip. I don't care for overdrive. What the hell is that? A button pushed on auto's for an extra gear? Most cars that I've driven have an overdrive other than manual and that's dating back some years fool. You didn't listen. Read again.


The drag strip and top end speed have nothing to do with each other unless you are running an 8 second car, fool.

Exactly my point.


thumbsdown do YOU even know what your point was?

Re: The power you will need to obtain speeds in the Celica [Re: slidr] #295647 Oct 11, 10:46am Oct 11, 10:46am
Joined: Jun 2004
Posts: 1,376
Los Angeles, CA
QTRMLR_1
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2002 Toyota Celica
QTRMLR_1
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2002 Toyota Celica

Joined: Jun 2004
Posts: 1,376
Los Angeles, CA
Originally Posted by slidr
Originally Posted by Rocketman
My celica has 180 bhp. I can hit 140. You math is flawed. Furthermore, my celica could probably go faster than 140 if I wasn't limited by the fuel cut-off. thumbsup


180 is not the actual crank horsepower of the Celica engine.

How else would N/A Celicas dyno over 180 to the wheels alone?

Actual engine power at the crank is likely over 200 hp.

Most if not all car companies under-rate the output of their engines for legal reasons, and those who don't pay for it sooner or later.

Case and point...The Cobra and RX-8 just to name a few.


ok slidr, answer this: how many stock Celicas dyno over 180 whp? tongue


I get my kicks on EC.
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