Performance Rolling Road Results

robbo51 · 20th October 2007, 16:54

I had my car on the rollers today @ Awesome GTi in Manchester.
I'm not aware of a 'standard' car being tested as such, just remapped ones.
(Please correct me if I'm wrong)

Here are the results of the three runs:

Run 1 = @wheels - 125.90 bhp @clutch/flywheel - 136.17 bhp = 269.65 max torque

Run 2 = @wheels - 126.22 @clutch/flywheel - 133.76 bhp and 272.95 max torque

Run 3 = @wheels - 128.17 @clutch/flywheel - 138.10 bhp and 270.61 max torque

Average: 136.01 bhp and 271.07 max torque

Honda Max Torque quote: 251 ft/lbs

FWH · 20th October 2007, 17:02

Yours is standard?

Seirrah · 20th October 2007, 17:09

FWH: Seems standard from the results.

So now you're going to 'chip' it to show the improvement it makes???

FWH · 20th October 2007, 17:34

Rated at 140 on the flywheel as standard - 136 is good on the wheels!

Not first claim of the 2.2 being powered beyond spec.

robbo51 · 20th October 2007, 19:18

Quote:

Originally Posted by FWH

Rated at 140 on the flywheel as standard - 136 is good on the wheels!

Not first claim of the 2.2 being powered beyond spec.

136 is at the flywheel.

FWH · 20th October 2007, 19:24

Quote:

Originally Posted by robbo51

136 is at the flywheel.

Never having been to a rolling road myself I presumed that it only measured wheel power and torque.

How is the flywheel power calculated from the test result data?

TTDegs · 20th October 2007, 22:39

FWH - it calculates it on the slowdown part of the graph.
From this it can (cleverly, somehow) work out what the power loss is due to transmission drag.

no idea how - just know that's what it does

@ robbo - nice one sir!

@both - interestingly, when I had my standard engine done, the transmission losses cam to about 20bhp, not the 10 bhp awesome's did.

My max bhp @ wheels was about 128 too...
Diesel Tuning UK 'chip'

TTDegs · 20th October 2007, 22:51

dug out 323GT-R's stock results

interestingly they are showing less power at the wheels than yours, but more losses, giving bigger corrected numbers...

which is why, I guess, it's best to get a 'before' and 'after' from the same dyno whenever carrying out any work

FWH · 21st October 2007, 09:13

Quote:

Originally Posted by TTDegs

which is why, I guess, it's best to get a 'before' and 'after' from the same dyno whenever carrying out any work

I would agree.
Are you sure it just doesn´t "asume" a %-age?

TTDegs · 21st October 2007, 09:43

when I had mine done it definately didn't - you could watch the power graph line going up with the revs, then a flat(ish) line along the bottom on the coast down, then it calc'd a 'power at flywheel' line afterwards

FWH · 21st October 2007, 09:46

Quote:

Originally Posted by TTDegs

when I had mine done it definately didn't - you could watch the power graph line going up with the revs, then a flat(ish) line along the bottom on the coast down, then it calc'd a 'power at flywheel' line afterwards

very interesting - would like to know how they work that out..

Pottsy · 21st October 2007, 10:47

Quote:

Originally Posted by FWH

very interesting - would like to know how they work that out..

Puma Race Engines Technical Guide - Measuring Engine power - engine dynos and rolling road dynos

and

Puma Race Engines Technical Guide - Coastdown Losses as measured on Rolling Road dynos

FWH · 21st October 2007, 11:12

Quote:

Originally Posted by FWH

very interesting - would like to know how they work that out..

basically they don´t (correctly)...

Pottsy · 21st October 2007, 11:33

Indeed - they just make a good, semi-measured guess. Wheel horsepower off the same rolling road is the only good comparison. And even then this is not representative of real power on the road - for example a diesel with an intercooler will make more power when travelling at speed than it will on the rollers.

robbo51 · 21st October 2007, 15:06

Quote:

Originally Posted by Pottsy

Indeed - they just make a good, semi-measured guess. Wheel horsepower off the same rolling road is the only good comparison. And even then this is not representative of real power on the road - for example a diesel with an intercooler will make more power when travelling at speed than it will on the rollers.

The torque figures are better than Honda say anyway!!

robbo51 · 23rd October 2007, 15:57

EDIT:
Some pics now added

TTDegs · 23rd October 2007, 18:10

was the blower blowing robbo?

nice pics

scary isn't it!

robbo51 · 23rd October 2007, 18:59

Very loud and a lot of air coming from the blower.
Scary.....??...er....No?

NOW WITH VIDEO!!

TTDegs · 5th November 2007, 19:13

this thread also worth a read

i-CTDI chipped from poland

illegalhunter · 5th November 2007, 19:28

time for a remap to unleash the 2.2 s power

20th October 2007, 16:54	#1 (permalink)
robbo51 Type S GT Civinfo guru Join Date: 1st July 2007 Location: Bingley, W.Yorks Posts: 2,833 Thanks: 39 Thanked 26 Times in 24 Posts	Rolling Road Results I had my car on the rollers today @ Awesome GTi in Manchester. I'm not aware of a 'standard' car being tested as such, just remapped ones. (Please correct me if I'm wrong) Here are the results of the three runs: Run 1 = @wheels - 125.90 bhp @clutch/flywheel - 136.17 bhp = 269.65 max torque Run 2 = @wheels - 126.22 @clutch/flywheel - 133.76 bhp and 272.95 max torque Run 3 = @wheels - 128.17 @clutch/flywheel - 138.10 bhp and 270.61 max torque Average: 136.01 bhp and 271.07 max torque Honda Max Torque quote: 251 ft/lbs Last edited by robbo51; 20th October 2007 at 20:31. Reason: Added more information. Graph to follow

20th October 2007, 22:51	#8 (permalink)
TTDegs Super Moderator Civinfo master Join Date: 4th August 2006 Location: Cardiff Posts: 5,638 Thanks: 0 Thanked 0 Times in 0 Posts	dug out 323GT-R's stock results interestingly they are showing less power at the wheels than yours, but more losses, giving bigger corrected numbers... which is why, I guess, it's best to get a 'before' and 'after' from the same dyno whenever carrying out any work Last edited by TTDegs; 20th October 2007 at 22:54.

23rd October 2007, 18:59	#18 (permalink)
robbo51 Type S GT Civinfo guru Join Date: 1st July 2007 Location: Bingley, W.Yorks Posts: 2,833 Thanks: 39 Thanked 26 Times in 24 Posts	Very loud and a lot of air coming from the blower. Scary.....??...er....No? NOW WITH VIDEO!! Last edited by robbo51; 23rd October 2007 at 21:19.

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YouTube - Dynorun Honda Civic FK3 @201 bhp!!!	Post #35	Refback	29th April 2008 19:28


This thread is about: Rolling Road Results, it's in Engines and Transmission at the Honda Civic forum Civinfo; I had my car on the rollers today @ Awesome GTi in Manchester. I'm not aware of a 'standard' car being tested as such, just ...

20th October 2007, 17:02	#2 (permalink)
FWH Super Moderator Civinfo guru Join Date: 3rd June 2007 Location: Sweden Posts: 4,859 Thanks: 3 Thanked 27 Times in 24 Posts	Yours is standard?

20th October 2007, 17:09	#3 (permalink)
Seirrah Locking Wheelnut Join Date: 12th August 2007 Location: Cardiff Posts: 126 Thanks: 0 Thanked 0 Times in 0 Posts	FWH: Seems standard from the results. So now you're going to 'chip' it to show the improvement it makes???

20th October 2007, 17:34	#4 (permalink)
FWH Super Moderator Civinfo guru Join Date: 3rd June 2007 Location: Sweden Posts: 4,859 Thanks: 3 Thanked 27 Times in 24 Posts	Rated at 140 on the flywheel as standard - 136 is good on the wheels! Not first claim of the 2.2 being powered beyond spec.

20th October 2007, 22:39	#7 (permalink)
TTDegs Super Moderator Civinfo master Join Date: 4th August 2006 Location: Cardiff Posts: 5,638 Thanks: 0 Thanked 0 Times in 0 Posts	FWH - it calculates it on the slowdown part of the graph. From this it can (cleverly, somehow) work out what the power loss is due to transmission drag. no idea how - just know that's what it does @ robbo - nice one sir! @both - interestingly, when I had my standard engine done, the transmission losses cam to about 20bhp, not the 10 bhp awesome's did. My max bhp @ wheels was about 128 too... Diesel Tuning UK 'chip'

21st October 2007, 09:43	#10 (permalink)
TTDegs Super Moderator Civinfo master Join Date: 4th August 2006 Location: Cardiff Posts: 5,638 Thanks: 0 Thanked 0 Times in 0 Posts	when I had mine done it definately didn't - you could watch the power graph line going up with the revs, then a flat(ish) line along the bottom on the coast down, then it calc'd a 'power at flywheel' line afterwards

21st October 2007, 11:33	#14 (permalink)
Pottsy Administrator Civinfo guru Join Date: 10th April 2006 Location: Leics Posts: 4,775 Thanks: 7 Thanked 64 Times in 33 Posts	Indeed - they just make a good, semi-measured guess. Wheel horsepower off the same rolling road is the only good comparison. And even then this is not representative of real power on the road - for example a diesel with an intercooler will make more power when travelling at speed than it will on the rollers.

23rd October 2007, 15:57	#16 (permalink)
robbo51 Type S GT Civinfo guru Join Date: 1st July 2007 Location: Bingley, W.Yorks Posts: 2,833 Thanks: 39 Thanked 26 Times in 24 Posts	EDIT: Some pics now added

23rd October 2007, 18:10	#17 (permalink)
TTDegs Super Moderator Civinfo master Join Date: 4th August 2006 Location: Cardiff Posts: 5,638 Thanks: 0 Thanked 0 Times in 0 Posts	was the blower blowing robbo? nice pics scary isn't it!

5th November 2007, 19:13	#19 (permalink)
TTDegs Super Moderator Civinfo master Join Date: 4th August 2006 Location: Cardiff Posts: 5,638 Thanks: 0 Thanked 0 Times in 0 Posts	this thread also worth a read i-CTDI chipped from poland

5th November 2007, 19:28	#20 (permalink)
illegalhunter Supporter Civinfo guru Join Date: 10th May 2007 Location: In the woods armed to the teeth Posts: 2,129 Thanks: 2 Thanked 13 Times in 13 Posts	time for a remap to unleash the 2.2 s power

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