Had my car on the rolling road today... - Page 4

MisterTomez · 14th April 2012, 14:39

Yes, manufacturer quoted figures are bhp i.e. power at the crank.

Jakg · 14th April 2012, 14:44

I thought BHP was power at the wheels?

MisterTomez · 14th April 2012, 14:49

BHP is brake horsepower, and is before any losses like the drive train occur.

James.uk · 14th April 2012, 15:32

I seem to recall that John.com got a rolling road readout of 75+ BHP. And his car was real high mileage one at almost 200K.... ???

...

Brabus · 14th April 2012, 15:41

Quote:

Originally Posted by Jakg

I thought BHP was power at the wheels?

BHP can be at the crank or at the wheels.What the manufacturers will tell you is what is at the crank because it sounds better.What you want to know is what is at the wheels because thats what is hitting the road.
The drive train will soak alot up.Auto soak abit more than manuals.But when you get into real bhp autos are that bit stronger and handle the power.But thats for big block V8s.

AngryDog · 14th April 2012, 16:25

That will 100% be flywheel (crank) bhp figure.

You can make a rolling road show any figure you want tbh. Changing things like the ambient temperature input (putting the probe near a hot source) will then allow the computer to produce an inflated (corrected) flywheel figure.

blacknwhite · 14th April 2012, 18:35

Quote:

Originally Posted by AngryDog

That will 100% be flywheel (crank) bhp figure.

You can make a rolling road show any figure you want tbh. Changing things like the ambient temperature input (putting the probe near a hot source) will then allow the computer to produce an inflated (corrected) flywheel figure.

Not even that. It's a bench figure. ALL car outputs now-a-days are bench figures - no loading, brand new out the box, ultimate performance (oh we don't like the read outs on that one, try another). If the performance figure quoted in a brochure is 130bhp, it's documented and proved. The other 9 engines that went through, will be between 100-125. Why would you think otherwise?

AngryDog · 14th April 2012, 20:50

Quote:

Originally Posted by blacknwhite

Not even that. It's a bench figure. ALL car outputs now-a-days are bench figures - no loading, brand new out the box, ultimate performance (oh we don't like the read outs on that one, try another). If the performance figure quoted in a brochure is 130bhp, it's documented and proved. The other 9 engines that went through, will be between 100-125. Why would you think otherwise?

I'm talking about Jacks results, not the from factory figure, which as you rightly say, could be anything lol

Jakg · 4th January 2013, 13:54

Rollers again...

Headine figures:
170HP (127KW) & 292 ft-lbf (396nm)

Departed 32016 · 4th January 2013, 14:03

Quote:

Originally Posted by Jakg

Rollers again...

Headine figures:
170HP (127KW) & 292 ft-lbf (396nm)

Nice one.....

14th April 2012, 14:39	#31
MisterTomez Gets stuck in '00 BMW 535i Auto M-Sport, '99 Rover 75 2.5 V6 Connoisseur SE Auto Join Date: Jan 2010 Location: Midlands Posts: 733 Thanks: 0 Thanked 7 Times in 2 Posts	Yes, manufacturer quoted figures are bhp i.e. power at the crank. __________________ ` [SIGPIC][/SIGPIC] "Trimmed like a first class cabin on the Titanic...before it sank." ---------- "The LPG'd, civilized psychopath."

14th April 2012, 14:49	#33
MisterTomez Gets stuck in '00 BMW 535i Auto M-Sport, '99 Rover 75 2.5 V6 Connoisseur SE Auto Join Date: Jan 2010 Location: Midlands Posts: 733 Thanks: 0 Thanked 7 Times in 2 Posts	BHP is brake horsepower, and is before any losses like the drive train occur. __________________ ` [SIGPIC][/SIGPIC] "Trimmed like a first class cabin on the Titanic...before it sank." ---------- "The LPG'd, civilized psychopath."

14th April 2012, 16:25	#36
AngryDog Posted a thing or two MG ZT CDTi 116+ Join Date: Jul 2011 Location: Hull Posts: 1,014 Thanks: 0 Thanked 0 Times in 0 Posts	That will 100% be flywheel (crank) bhp figure. You can make a rolling road show any figure you want tbh. Changing things like the ambient temperature input (putting the probe near a hot source) will then allow the computer to produce an inflated (corrected) flywheel figure. __________________ [SIGPIC][/SIGPIC] ZT 116+ - ChipMyCar Remap - Synergy 2

14th April 2012, 14:44	#32
Jakg This is my second home N/A Join Date: Feb 2010 Location: Suffolk Posts: 6,867 Thanks: 0 Thanked 397 Times in 302 Posts	I thought BHP was power at the wheels?

14th April 2012, 15:32	#34
James.uk Passed Away 2002 Pale Blue. Rover 75 CDTi Connoisseur auto. 170K miles Join Date: Dec 2008 Location: Near the M67. Posts: 14,509 Thanks: 199 Thanked 585 Times in 397 Posts	I seem to recall that John.com got a rolling road readout of 75+ BHP. And his car was real high mileage one at almost 200K.... ??? ...

4th January 2013, 13:54	#39
Jakg This is my second home N/A Join Date: Feb 2010 Location: Suffolk Posts: 6,867 Thanks: 0 Thanked 397 Times in 302 Posts	Rollers again... Headine figures: 170HP (127KW) & 292 ft-lbf (396nm)