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| 4.9 EF Futura |
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hornet wrote: meh, was gunna post the chart, but not going to now. Since its mearly worthless.
Nah, chuck her up. Even if you delete the kw figures.... I'm always more interested to see how much power is "under the curve" eg.. My engine naturally aspirated: 
VERSUS My engine with forced induction: 
_________________ I promise..... I will never die. |
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| arm79 |
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tomcolahan wrote: dont forget talking 1/4 times brings in another uncontrollable factor - the driver. there is no way you can say that two drivers are exactly alike. on the dyno this factor becomes almost negligable. Yes, that is true on the track... But my question/example centred around autos... Not that hard to just stomp your foot on the floor and hold the wheel straight for 16 secs. Looking at the simplest possible situation for an answer. hornet wrote: meh, was gunna post the chart, but not going to now. Since its mearly worthless.
Post it up mate by all means. Im not having a crack at anyone. I have long asked the question, and it has been debated here many a time, as to the realities of a dyno figure. I have asked a number of dyno operators the question, and I'm sick of the usual "Time, place, dyno, environment" excuses. I really want someone to answer how their dyno figure measures in the real world. How does the rwkw performance relate to how quick the car is, whcih is more important to me.... But, that question is yet to be answered, and all I get is excuses. I fear that after all this rant that people will now regard me as a d***head.  If thats the case, fair enough. I went searching for an answer, and didnt end up with it.
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| prydey |
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arm 79 i agree with what u r saying about real performance on track. rwkw figures do not mean more power unless they were conducted on same day, same dyno. i have been saying this all along. not for bragging rights. people like me and hornet and others post up our results as it makes us feel better. most reputable dyno places get there machines calibrated fairly regularly and so any figure should be around the mark. give or take 10 - 20%
there is another type of dyno which bolts straight onto your axle after you remove a wheel. this is a lot more accurate as it takes away a lot of variables eg tyre pressure, ambient temp, tyre temp etc. have only ever seen it once at extreme horsepower show. if you want something more concrrete then the strip is the only way. u can't argue with the clock.
_________________ eb v8: low loud and fast. just how a v8 should be. i guess the big question is, is it fast enough... |
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| hornet |
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I dont have 1/4mile track times, but I have 1/8th mile track times.
I'll be trying to get to AIR one night when the drags are on to get 1/4 figures, thats if I'm game..
_________________ 5 Speed EL Futura
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| hornet |
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prydey wrote: there is another type of dyno which bolts straight onto your axle after you remove a wheel. this is a lot more accurate as it takes away a lot of variables eg tyre pressure, ambient temp, tyre temp etc. have only ever seen it once at extreme horsepower show.
I too have seen this dyno put through its paces. I agree it takes out some vairables, like tyre presure, traction, etc. But I dont really think it would take away ambient temperature. The only way this could be done was to run the car in a controlled temperature enviroment like a cool room.
_________________ 5 Speed EL Futura
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| tomcolahan |
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at this stage, there isnt really a practical way of universally measuring the power output of any particular car. there is too many uncontrollable variables, as well as assumptions. all you can really do is compare between one and another.
_________________ We'll keep our cow s**t in the country, you keep your bull s**t in the city. |
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| hornet |
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http://www.mercurymotorsport.com.au/events/20050122/results/010.GIF wrote: Completely stock with 65,000Km on the odometer the BA pulled an average of 225Kw at the rear wheels over a set of four separate Dyno power runs. http://www.mercurymotorsport.com.au/events/20050122/results/010.GIF wrote: Max 222.5kW http://www.fordforums.com/showthread.php?t=34348&page=7&pp=10 wrote: My stock figure for the Boss 260 was 198.5rwkw...
I still think that 196 is quite normal for a 5 speed Boss 260.
_________________ 5 Speed EL Futura
Last edited by hornet on Thu May 05, 2005 8:33 pm, edited 3 times in total. |
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| 4.9 EF Futura |
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Nice one! Bit rich there across the range, so should be bit more power once fuelling is sorted...
Strong curve tho. Is that the BBM switching @ 130km/hr?
_________________ I promise..... I will never die. |
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| hornet |
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Yeah it is a strong curvr, right up till the speed limiter.
I'd assume that is the BBM switching, thats about the only explination that I have for it and it's about the right time, power drops off, switches, power comes back on. Yeah its running flipping rich! wayyyyy too rich. I'd like to get the car on the BDT dyno as a comparison, pitty the dyno day is full.. hopefully some one will pull out 
_________________ 5 Speed EL Futura
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| Thomas |
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4.9 EF Futura wrote: hornet wrote: meh, was gunna post the chart, but not going to now. Since its mearly worthless. Nah, chuck her up. Even if you delete the kw figures.... I'm always more interested to see how much power is "under the curve" eg.. My engine naturally aspirated: VERSUS My engine with forced induction: Bit off topic... but how come every time we talk about our cars.. etc and there power figures or speed, you always don't want to give out the information 
don't mean to be rude, but am just curious. 
_________________ 237.9 KW ATW
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| hornet |
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now that is a FAT power curve
 ~ Mmmmm power curve *drool* (Homer style)
_________________ 5 Speed EL Futura
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| drazull |
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Two true slow_white I noticed 4.9 had drawn over the power curve of his n/a engine. How come?
_________________ Not lost any demerit points |
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| 4.9 EF Futura |
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I removed the kw figures as I did not want to suggest we were comparing kw figures... but comparing the power under the curve. Lol, im not ashamed of the kw figures, nor trying to hide them...
The n/a peak was 116kw, the blown peak (with severe tuning problems) was 155kw.
_________________ I promise..... I will never die. |
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| offyaguts |
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4.9 EF Futura wrote: I removed the kw figures as I did not want to suggest we were comparing kw figures... but comparing the power under the curve. Lol, im not ashamed of the kw figures, nor trying to hide them...
The n/a peak was 116kw, the blown peak (with severe tuning problems) was 155kw. Hows it running now Martin? Had it back on the dyno and sorted out the severe tuning problems and got a new kw figures? Did you get a torque/hp reading?
_________________ EL Fairmont Ghia V8 Turbo 303rwkw
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| 4.9 EF Futura |
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Runs much better these days, no more fuel pouring out exhaust. Peak was 168kw iirc but dont have the graph to post up. Dyno day on the 21st of this month so will have more results then...
_________________ I promise..... I will never die. |
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