stg2 dyno sheet!!!! and stock 06 si
08-22-2006, 09:57 PM
#26
Senior Member
Originally Posted by ballerSS
You are correct, horsepower ALWAYS equals torque at 5252, it's just part of the formula.
Something is way off with that dyno!
Something is way off with that dyno!
rite on!!!!!!!
finaly somebody else knows how torque works!
08-23-2006, 12:38 AM
#28
Senior Member
Originally Posted by forced_induction
explain, how does it work?
its a math problum....HP and RPM(i there added) get multiplyed by 5252(i beleve so)to get your end result...wich is your torque number.
thats why tq and hp graphs meet at that rpm point.
if thats not a good enough answer i'll have a few much smarter people chime in about it.
08-24-2006, 08:39 AM
#29
Senior Member
Thread Starter
Join Date: 04-29-06
Location: charlotte, nc
Posts: 552
Likes: 0
Received 0 Likes
on
0 Posts
i called the shop where i got the dyno at and i finally got an anwser
they told me to look at the number on the right side of the chart and comper them with the left side numbers if the number were not even thats why the torque curve and hp curb does not meet at 5200 but is just bc they set the #s wrong but if you guys pay close attention the actually do
but thank you guy for the coments and thank you 06 black
they told me to look at the number on the right side of the chart and comper them with the left side numbers if the number were not even thats why the torque curve and hp curb does not meet at 5200 but is just bc they set the #s wrong but if you guys pay close attention the actually do
but thank you guy for the coments and thank you 06 black
08-24-2006, 10:12 AM
#32
Senior Member
Originally Posted by Jekyl
Wrong.
Top two lines are Before and After HP curves.
Bottom two lines are before and after Air Fuel Ratio curves.
Top two lines are Before and After HP curves.
Bottom two lines are before and after Air Fuel Ratio curves.
Obviously he did the A/F INSTEAD OF the torque.
08-24-2006, 10:25 AM
#33
I'm not seeing how anyone is reading 227hp stock - looking at that graph I read more like 215hp, which would be a gain of 23hp, not 11.
Still...that was a totally STOCK car? I can't see how you can pull 215hp at the wheel (and I've this is done consistantly) and have the factory still claim 205hp - make sno sense to me.
Still...that was a totally STOCK car? I can't see how you can pull 215hp at the wheel (and I've this is done consistantly) and have the factory still claim 205hp - make sno sense to me.
08-24-2006, 04:02 PM
#35
New Member
Join Date: 04-23-06
Location: WA
Posts: 170
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by 06black
you have to understand that "torque" is not true "force" in engine terms.
its a math problum....HP and RPM(i there added) get multiplyed by 5252(i beleve so)to get your end result...wich is your torque number.
thats why tq and hp graphs meet at that rpm point.
if thats not a good enough answer i'll have a few much smarter people chime in about it.
its a math problum....HP and RPM(i there added) get multiplyed by 5252(i beleve so)to get your end result...wich is your torque number.
thats why tq and hp graphs meet at that rpm point.
if thats not a good enough answer i'll have a few much smarter people chime in about it.
yes bring more peopel to chime about that math problem, I'm not exactly sure of the cross over at 52xxrpm.
08-24-2006, 04:10 PM
#36
Senior Member
Join Date: 01-15-05
Location: Ottawa
Posts: 5,126
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by xl1200r
Still...that was a totally STOCK car? I can't see how you can pull 215hp at the wheel (and I've this is done consistantly) and have the factory still claim 205hp - make sno sense to me.
08-25-2006, 08:31 PM
#37
Senior Member
Thread Starter
Join Date: 04-29-06
Location: charlotte, nc
Posts: 552
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by xl1200r
I'm not seeing how anyone is reading 227hp stock - looking at that graph I read more like 215hp, which would be a gain of 23hp, not 11.
Still...that was a totally STOCK car? I can't see how you can pull 215hp at the wheel (and I've this is done consistantly) and have the factory still claim 205hp - make sno sense to me.
Still...that was a totally STOCK car? I can't see how you can pull 215hp at the wheel (and I've this is done consistantly) and have the factory still claim 205hp - make sno sense to me.
08-25-2006, 08:38 PM
#38
Senior Member
Join Date: 07-13-05
Location: WI
Posts: 3,180
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by stg2cobalt
but im stiil very impressed with the si hp
08-25-2006, 08:46 PM
#40
Senior Member
Join Date: 07-13-05
Location: WI
Posts: 3,180
Likes: 0
Received 0 Likes
on
0 Posts
Yes, I see how about the Si's traction? I assume no 1st gear wheelspin unless you drop the clutch? That is one thing I miss about a car with less torque. Being able to let the clutch fly!
10-09-2006, 10:02 PM
#46
Senior Member
Join Date: 06-01-06
Location: Toronto
Posts: 1,492
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by joeworkstoohard
i gotta say, i'm impressed with the Si if i'm reading that right, it's a much smoother power build than hondas i'm used to.
10-10-2006, 09:23 AM
#47
Senior Member
Join Date: 09-17-06
Location: Earth
Posts: 551
Likes: 0
Received 0 Likes
on
0 Posts
I noticed some people where questioning how HP is calculated on a dyno.
An engine doesn't produce HP. HP is a measurment of work. One horsepower equals 33,000 foot-pounds of work per minute. It's the work necessary to lift a total of 33,000 lbs a distance of one foot in one minute
An engine produces a twisting force which is measured using torque.
One lb/ft of torque equals the force needed to rotate an axle using a lever that has one pound of weight exactly one foot away from the rotational axis.
In order to convert the twisting force to equal work, you have to use this formula.
(Torque x 5,252) ÷ 5,252 = Horsepower
That's why the two lines will cross at 5,252 RPM
E.G., (100 lb/ft x 5,252 = 525,200) ÷ 5,252 = 100 HP
An engine doesn't produce HP. HP is a measurment of work. One horsepower equals 33,000 foot-pounds of work per minute. It's the work necessary to lift a total of 33,000 lbs a distance of one foot in one minute
An engine produces a twisting force which is measured using torque.
One lb/ft of torque equals the force needed to rotate an axle using a lever that has one pound of weight exactly one foot away from the rotational axis.
In order to convert the twisting force to equal work, you have to use this formula.
(Torque x 5,252) ÷ 5,252 = Horsepower
That's why the two lines will cross at 5,252 RPM
E.G., (100 lb/ft x 5,252 = 525,200) ÷ 5,252 = 100 HP
Thread
Thread Starter
Forum
Replies
Last Post