just wondering what kind of numbers tauruses put out at the wheels, cause correct me if im wrong the ones ppl normaly refer to are at the crankshaft
for vulcan and duratec gen3 or 4
for vulcan and duratec gen3 or 4
SableTuner
I believe it's said to be that most car lose about 10% between the engine and the ground. So a 200hp durtec would have about 180 at the wheels. i think it's 10% not too sure
Manual transimission loose about 10-15% from the crankshaft to the the wheels
Automatic trannies loose about 20-25%.....
Manual transimission loose about 10-15% from the crankshaft to the the wheels
Automatic trannies loose about 20-25%..... [/b][/quote]
I know a heard 10% somewhere thanks for the refresher
Don't manufacturers state wheel HP nowadays? Back in the sities and seventy it was at the crank but I am pretty sure it is at the wheels now.
Mike
B)
Mike
B)
That's not correct. No manufacturer gives horsepower at the wheels. It's all crank hp advertised.
In the past they used to use gross horsepower. That is horsepower of the engine with no accessories, no water pump, no fans. It was tested on an engine dyno with an externally powered water pump.
My 2000 Duratec put down 150hp/160tq bone stock. The Duratec consistently makes more tq than hp, its just that it makes it at 4k rpm.
Most fwd automatic transmissions steal about 20-25%, depending on manufacturer. Some are a little more efficient, some a little less. RWD manual + live axle is the most efficient at about 15% loss, followed by fwd manual & rwd live axle at 17%.
And is you think that a 50hp/40tq loss is alot, the Honda 5AT is just as bad. Stock automatic CL Type-S' put down ~195whp, and the engine is rated at 260hp at the crank. The manual transmission with the same exact engine puts down 25whp more. B)
I know Bob dyno'd his Vulcan, so maybe do a search for it. I would say a G4 Vulcan should put down ~115-120whp.
Most fwd automatic transmissions steal about 20-25%, depending on manufacturer. Some are a little more efficient, some a little less. RWD manual + live axle is the most efficient at about 15% loss, followed by fwd manual & rwd live axle at 17%.
And is you think that a 50hp/40tq loss is alot, the Honda 5AT is just as bad. Stock automatic CL Type-S' put down ~195whp, and the engine is rated at 260hp at the crank.
The manual transmission with the same exact engine puts down 25whp more. B)I know Bob dyno'd his Vulcan, so maybe do a search for it. I would say a G4 Vulcan should put down ~115-120whp.
...dude just think 2 secs, do you really think that they would do that?? [/b][/quote]
Dude, Sorry. After I thought about it for two seconds I was thinking gross vs net.
Mike
B)
You have to be careful when looking at the graph. Many Dyno shops will just assign the peak TQ number but it may be when the tranny is shifting. Look at the graph where there are no spikes.
I couldn't get this to the scanner at work, so I took a picture of these. The green one is hard to see. If the Green one is innacurate then the torque is more around 204.6 #/ft. Tell me if I'm reading this right.
Can some one give me a short description of Torque converter flash too please. Thanks.
Can some one give me a short description of Torque converter flash too please. Thanks.
Attachments
Look at the values on the side of the graph, the hp & tq are on a different scale, so the crossover point isnt 5252rpm like it would be if the hp & tq were on the same scale. From that graph it looks liek your tq peak is 185wtq @ 4400 rpm, that spike at 4k rpm is not a correct reading.
Anyways, thats ~ 25whp/25wtq gain over stock. If we assume a 25% loss from the drivetrain that would be ~ 230hp/245tq at the crank. Thats just an estimation, and should be backed up with some 1/4 times to be sure the hp/tq gain were actually there.
Anyways, thats ~ 25whp/25wtq gain over stock. If we assume a 25% loss from the drivetrain that would be ~ 230hp/245tq at the crank. Thats just an estimation, and should be backed up with some 1/4 times to be sure the hp/tq gain were actually there.
Your confusing the 2 lines. The line on top is the HP curve, notice how it increases with rpm, then fades off a little. The rapidly decreasing line is the tq curve. The printout of 200wtq is not correct, thats a computer readout error. Like I said previously his peak tq is ~ 185ft lbs @ 4400 rpm. There is nothing wrong with that dyno, expcept for the fact that it misread the tq peak because of an artificial spike. That is not abnormal at all, it happens all the time.
I'll have to dig up & scan my dyno to show you what a stock graph looks like.
I'll have to dig up & scan my dyno to show you what a stock graph looks like.
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