Well, what is the horsepower?
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Joined: Dec 2004
Posts: 138
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From: Atlanta
06 SLK55 AMG Firemist/Blk
HP is not a 100% absolute measurement and is effected by many variables. Every car (or engine) will measure a different HP rating. Also each car will measure a deferent HP number on a deferent day if the temperature or humidity have changed. The deference between 355 and 362 is only 2% which is statistically insignificant.
Newbie
Joined: Mar 2003
Posts: 7
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From: Berlin Germany
SLK 32 AMG
The reason for the different horsepower figures is because there is more than one definition of the horsepower. The following list shows the various definitions relative to the SI unit for power the watt (which is universally constant).
HP (550 ft-lbf/s) = 745.7 W
HP (boiler) = 9809.5 W
HP (British), bhp, hp = 745.7 W
HP (cheval-vapeur) cv = 735.499 W
HP (electric) = 746 W
HP (metric) PS = 735.499 W
HP (water) = 746.043 W
The SLK55AMG engine is rated at 265 kW, this translates into 355 bhp and 360 PS or metric hp. These are the only numbers I've seen quoted so not sure where the 362 hp you quote comes from unless it was a preliminary rating for the engine.
HP (550 ft-lbf/s) = 745.7 W
HP (boiler) = 9809.5 W
HP (British), bhp, hp = 745.7 W
HP (cheval-vapeur) cv = 735.499 W
HP (electric) = 746 W
HP (metric) PS = 735.499 W
HP (water) = 746.043 W
The SLK55AMG engine is rated at 265 kW, this translates into 355 bhp and 360 PS or metric hp. These are the only numbers I've seen quoted so not sure where the 362 hp you quote comes from unless it was a preliminary rating for the engine.
Super Member
Joined: Sep 2004
Posts: 694
Likes: 3
From: Bethesda, MD
Porsche
Originally Posted by knightma
The reason for the different horsepower figures is because there is more than one definition of the horsepower. The following list shows the various definitions relative to the SI unit for power the watt (which is universally constant).
HP (550 ft-lbf/s) = 745.7 W
HP (boiler) = 9809.5 W
HP (British), bhp, hp = 745.7 W
HP (cheval-vapeur) cv = 735.499 W
HP (electric) = 746 W
HP (metric) PS = 735.499 W
HP (water) = 746.043 W
The SLK55AMG engine is rated at 265 kW, this translates into 355 bhp and 360 PS or metric hp. These are the only numbers I've seen quoted so not sure where the 362 hp you quote comes from unless it was a preliminary rating for the engine.
HP (550 ft-lbf/s) = 745.7 W
HP (boiler) = 9809.5 W
HP (British), bhp, hp = 745.7 W
HP (cheval-vapeur) cv = 735.499 W
HP (electric) = 746 W
HP (metric) PS = 735.499 W
HP (water) = 746.043 W
The SLK55AMG engine is rated at 265 kW, this translates into 355 bhp and 360 PS or metric hp. These are the only numbers I've seen quoted so not sure where the 362 hp you quote comes from unless it was a preliminary rating for the engine.
Here in the US the C55 has 362hp, so I guess he's assuming the SLK55 has the same figure... Probably more restrictive exhausts on the SLK55 rob those 7hp...
Eric...
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Joined: Nov 2004
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Slk Book
Look at about the 10th page back in the 2005 Mercedes Benz SLK-Class black brochure. The one with the big 360 degree written on the cover. The first AMG page of the brochure. It says in huge red type 362hp period!! Thats where all the confushion is.
Super Member
Joined: Sep 2004
Posts: 694
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From: Bethesda, MD
Porsche
Originally Posted by tooluse
Look at about the 10th page back in the 2005 Mercedes Benz SLK-Class black brochure. The one with the big 360 degree written on the cover. The first AMG page of the brochure. It says in huge red type 362hp period!! Thats where all the confushion is.
MSRP$61,220.00*
EngineAMG-built 5.5L SOHC 24-valve V8 engine
Net Power355 hp @ 5,750 rpm
Net Torque376 lb-ft @ 3,500 rpm
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Member
Joined: Jul 2004
Posts: 142
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From: Newbury, UK
W210 E320, SLK55 AMG
The Mercedes-Benz UK web site says 360, but all UK magazines seem to be quoting 355. I don't know where that figure comes from, but I'm guessing that's the figure appearing in press releases.
The same engine, but fitted in a different model, will have a slightly different power output. The exhaust system differs between models, and that has a small effect on power output, so the output for the C55 is likely to be different anyhow.
The same engine, but fitted in a different model, will have a slightly different power output. The exhaust system differs between models, and that has a small effect on power output, so the output for the C55 is likely to be different anyhow.
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