To the wheels...
It has to do with what type of dynamometer is used.
08-29-2005, 11:31 AM
#12
lets make this even more confusing.
you asked how much torque is made to the wheels. and someone said 135. which is right, and wrong at the same time. horsepower does not multiply through gears, however torque does. so depending on what gear you are in, your torque may be like 3 times that amount that is actually making its way through the drive train and to the wheels. however thier is a correction factor, so that it makes a more user friendly number that resembles crank measured torques minus some drivetrain loss for good measure. dynapack dynos dont show this correction and you would see some rediculous number like, 700 ftlbs or so.
as far as the power to the wheels question, i have seen that it goes up slightly with each year model, and obviously with the increase of displacement from 2.0 to2.2 the power grew although honda still claims that it makes the same power.
take dyno graphs with a grain of salt, because correction factors are widely disagreed on, and thier are a bunch of variables, that people, "alter" to show gains that prove thier theories correct and sell more products.
as a standard, the dynojet is probably the most common, so we tend to base numbers off of that.
thier is a company called dyno dynamics that makes a dyno with a unique type of inertial something or other measuring system, and it truly measures whp without misleading correction factors.
you asked how much torque is made to the wheels. and someone said 135. which is right, and wrong at the same time. horsepower does not multiply through gears, however torque does. so depending on what gear you are in, your torque may be like 3 times that amount that is actually making its way through the drive train and to the wheels. however thier is a correction factor, so that it makes a more user friendly number that resembles crank measured torques minus some drivetrain loss for good measure. dynapack dynos dont show this correction and you would see some rediculous number like, 700 ftlbs or so.
as far as the power to the wheels question, i have seen that it goes up slightly with each year model, and obviously with the increase of displacement from 2.0 to2.2 the power grew although honda still claims that it makes the same power.
take dyno graphs with a grain of salt, because correction factors are widely disagreed on, and thier are a bunch of variables, that people, "alter" to show gains that prove thier theories correct and sell more products.
as a standard, the dynojet is probably the most common, so we tend to base numbers off of that.
thier is a company called dyno dynamics that makes a dyno with a unique type of inertial something or other measuring system, and it truly measures whp without misleading correction factors.
08-29-2005, 11:53 AM
#13
Originally Posted by xviper,Aug 28 2005, 11:22 PM
I think I know where he got that from: BTU (British Thermal Unit). 
08-29-2005, 12:00 PM
#14
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Originally Posted by Mr.E.G.,Aug 29 2005, 02:31 PM
lets make this even more confusing.
you asked how much torque is made to the wheels. and someone said 135. which is right, and wrong at the same time. horsepower does not multiply through gears, however torque does. so depending on what gear you are in, your torque may be like 3 times that amount that is actually making its way through the drive train and to the wheels. however thier is a correction factor, so that it makes a more user friendly number that resembles crank measured torques minus some drivetrain loss for good measure. dynapack dynos dont show this correction and you would see some rediculous number like, 700 ftlbs or so.
as far as the power to the wheels question, i have seen that it goes up slightly with each year model, and obviously with the increase of displacement from 2.0 to2.2 the power grew although honda still claims that it makes the same power.
take dyno graphs with a grain of salt, because correction factors are widely disagreed on, and thier are a bunch of variables, that people, "alter" to show gains that prove thier theories correct and sell more products.
as a standard, the dynojet is probably the most common, so we tend to base numbers off of that.
thier is a company called dyno dynamics that makes a dyno with a unique type of inertial something or other measuring system, and it truly measures whp without misleading correction factors.
you asked how much torque is made to the wheels. and someone said 135. which is right, and wrong at the same time. horsepower does not multiply through gears, however torque does. so depending on what gear you are in, your torque may be like 3 times that amount that is actually making its way through the drive train and to the wheels. however thier is a correction factor, so that it makes a more user friendly number that resembles crank measured torques minus some drivetrain loss for good measure. dynapack dynos dont show this correction and you would see some rediculous number like, 700 ftlbs or so.
as far as the power to the wheels question, i have seen that it goes up slightly with each year model, and obviously with the increase of displacement from 2.0 to2.2 the power grew although honda still claims that it makes the same power.
take dyno graphs with a grain of salt, because correction factors are widely disagreed on, and thier are a bunch of variables, that people, "alter" to show gains that prove thier theories correct and sell more products.
as a standard, the dynojet is probably the most common, so we tend to base numbers off of that.
thier is a company called dyno dynamics that makes a dyno with a unique type of inertial something or other measuring system, and it truly measures whp without misleading correction factors.
am i far off in thinking this is so?
08-29-2005, 01:05 PM
#16
Registered User
Originally Posted by anth305,Aug 29 2005, 02:00 PM
so is this why one would generally use a gear that's close to a 1:1 ratio for getting #'s on a dyno pull? i.e. 3rd or 4th...
am i far off in thinking this is so?
am i far off in thinking this is so?
08-29-2005, 01:06 PM
#17
Registered User
Originally Posted by wrxrick,Aug 29 2005, 03:01 PM
135...Are there any mods that can increase this fairly well without the use of force induction?
08-29-2005, 01:39 PM
#18
Registered User
the torque to the wheels is kind of a made up figure. The Dyno takes the engine RPM and gear ratios to "derive" it.
An engine making 200HP to the wheels with 300lb-ft of crank torque at 60mph (a given wheel speed) is making EXACTLY the same torque to the wheels as a 200HP engine with 150lb-ft at 60mph. It is just that the dyno "corrects" it based on engine RPM.
An engine making 200HP to the wheels with 300lb-ft of crank torque at 60mph (a given wheel speed) is making EXACTLY the same torque to the wheels as a 200HP engine with 150lb-ft at 60mph. It is just that the dyno "corrects" it based on engine RPM.