Tech PS v's BHP

CIVHEAD · 29th January 2007, 19:31

In the Civic brochure specs, it quotes for the diesel 140 PS @ 4000 rpm. Is this at the wheel or at the flywheel? If its at the wheel what would the flywheel PS be? If its at the flywheel what would the wheel PS be?
What is 140 PS in BHP?

323GT-R · 29th January 2007, 19:35

It's at the flywheel. 140ps is approx 138BHP

TTDegs · 29th January 2007, 23:57

It definately is at the flywheel, as 323GT-R says

However....

Of the 2 diesel Civics on here which have actually got as far as a dyno run, lets just say that Honda were a bit conservative with their figures

We don't know yet if this was to down-play any power advantage of the diesel over the petrol (which is also quoted at 140PS), of if they have both been under rated

Check out the 'more oomph for your 2.2' thread in this section for the dyno graphs

czechplastik · 30th January 2007, 00:09

Quote:

Originally Posted by TTDegs

Of the 2 diesel Civics on here which have actually got as far as a dyno run, lets just say that Honda were a bit conservative with their figures

Its nearer 148bhp isn't it?

TTDegs · 30th January 2007, 00:48

Quote:

Originally Posted by czechplastik

Its nearer 148bhp isn't it?

mine was....

czechplastik · 30th January 2007, 00:52

As you say, don't see the logic in downplaying it, but I'm not complaining!

Pottsy · 31st January 2007, 07:39

Quote:

Originally Posted by czechplastik

As you say, don't see the logic in downplaying it, but I'm not complaining!

It's because in some countries (Germany for one, I think) the power output quoted must be achieved by the car. Hence, to accommodate the variation between engines, the typical power output is higher.

Much better than the old days when the power output quoted was just a wildly exaggerated version of an optimistic guess!

Pottsy · 31st January 2007, 07:41

Oops forgot the other bit:

1 PS = 0.986 bhp = 0.736 Kw

29th January 2007, 19:31	#1 (permalink)
CIVHEAD Supporter Valve Cap Join Date: 1st September 2006 Location: Thatcham Posts: 35 Thanks: 0 Thanked 0 Times in 0 Posts iTrader: (0)	PS v's BHP In the Civic brochure specs, it quotes for the diesel 140 PS @ 4000 rpm. Is this at the wheel or at the flywheel? If its at the wheel what would the flywheel PS be? If its at the flywheel what would the wheel PS be? What is 140 PS in BHP?

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This thread is about: PS v's BHP, it's in Engines and Transmission at the Honda Civic forum Civinfo; In the Civic brochure specs, it quotes for the diesel 140 PS @ 4000 rpm. Is this at the wheel or at the flywheel? If ...

29th January 2007, 19:35	#2 (permalink)
323GT-R Wheelnut Join Date: 2nd September 2006 Location: Warrington Posts: 50 Thanks: 0 Thanked 0 Times in 0 Posts iTrader: (0)	It's at the flywheel. 140ps is approx 138BHP

29th January 2007, 23:57	#3 (permalink)
TTDegs Super Moderator Civinfo master Join Date: 4th August 2006 Location: Cardiff Posts: 5,634 Thanks: 0 Thanked 1 Time in 1 Post iTrader: (0)	It definately is at the flywheel, as 323GT-R says However.... Of the 2 diesel Civics on here which have actually got as far as a dyno run, lets just say that Honda were a bit conservative with their figures We don't know yet if this was to down-play any power advantage of the diesel over the petrol (which is also quoted at 140PS), of if they have both been under rated Check out the 'more oomph for your 2.2' thread in this section for the dyno graphs

30th January 2007, 00:52	#6 (permalink)
czechplastik King of the rodeo Civinfo guru Join Date: 24th October 2006 Location: Belfast Posts: 4,683 Thanks: 0 Thanked 2 Times in 2 Posts iTrader: (0)	As you say, don't see the logic in downplaying it, but I'm not complaining!

31st January 2007, 07:41	#8 (permalink)
Pottsy Administrator Civinfo master Join Date: 10th April 2006 Location: Leics Posts: 5,497 Thanks: 22 Thanked 174 Times in 102 Posts iTrader: (0)	Oops forgot the other bit: 1 PS = 0.986 bhp = 0.736 Kw