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  #1  
Old 01-19-2002, 02:16 AM
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Euro vs N.A. Horsepower W126

How much horsepower is there in a Euro 560 as opposed to a N.A. 560 ?

I thought I read somewhere that a N.A. version has around 238hp and in Euro trim 299hp. I'm just going by memory. Is this correct?

BTW is there a preferred year for the 560s?

Last edited by philipminion; 01-19-2002 at 02:25 AM.
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  #2  
Old 01-19-2002, 02:31 PM
Mattman
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Looking at my owners manual it lists power output as 300hp, I am not sure what the US spec is though.

Matt.
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  #3  
Old 01-19-2002, 05:51 PM
BlackE55
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Yep, 300hp and the US spec is rated at 238.

I'd opt the the '90 or '91. Harder cam, less prone to lobe wear and I like the seat design/pattern, and cladding/bumpers that match the body color.
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Old 01-20-2002, 08:25 PM
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Thanks guys for confiming the specs.

I wonder what the difference is between the the Euro and N.A. version.

That's a significant HP loss between 238 and 300.
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  #5  
Old 01-20-2002, 08:32 PM
Mattman
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The differences I quite a lot I believe. I think the Euro has a higher compression, more spark advance, and a more agressive camshaft profile as well. The emissions control in the US killed the output.

Matt.
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  #6  
Old 03-20-2002, 12:16 AM
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Can 560 U.S. be "Euroized"?

Replying to an older post here but can anyone verify the reasons for a 60hp loss in the U.S. version? Can a U.S. 560 motor be "Euroized?" Custom pistons, cams? I am doing a motor transplant with a 560 U.S. into my 500 Euro since the motor is getting tired. I have also heard that the 238hp is purposely underrated for U.S. emissions laws at the time and its more like 270. Anyone ever dynoed a U.S. 560? BENZMAC, maybe you can help here. My main question is wheather or not you can efficiently "Euroize" the 560 U.S. motor.
Thanks for any replies.
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Old 03-21-2002, 01:15 PM
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I don't know about the euro-izing, but the 300HP euro only applies to non-cat (RUF) 560s made after 9/87. The cat model (KAT) after 9/87 was rated at 279...which most of them were. I think it was 89 where you could no longer get a non-cat version. So if that is right, then there would have only been 2 years of 300HP 560s in europe. The US models have 9:1 compression while the euros have 10:1. This is also true for the other engines too, like the 420 for instance which was rated at 224 and 231 KAT and RUF respectively as opposed to the 201 US HP.
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Old 03-21-2002, 03:31 PM
BlackE55
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I too have read that the US version 560 hp is underrated. Would be interesting to see a verification of this.

Also, besides emissions and exhaust changes, doesn't the Euro 560 have bigger pistons?

I don't think you can efficiently Euorize a US spec 560, better of just getting a euro 560 V8.

"stummala" has some neat ideas at
http://www.mbcoupes.com/

Last edited by BlackE55; 03-21-2002 at 03:37 PM.
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  #9  
Old 03-21-2002, 03:35 PM
Mattman
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I don't know whether the higher compression ratio is acheived via smaller combustion chambers in the heads of if the US has smaller pistons. I would have thought the head but can't say for sure. The Euro cars also had cat's, I believe that cat's were on all vehicles post 86 and prior to that it was an option.

Matt.
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  #10  
Old 03-23-2002, 02:10 PM
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Well I think I'm going to put a 560 U.S. motor in the next few weeks and if a major "power choking" factor is the exhaust setup, I should be ok. I'll be able to fit my AMG headers to it and I just bought a new Sebring (maker of AMG mufflers) muffler. I'm also adding a 3.27 differential so I'll let yous know how it turns out. It just better be faster than my old 500 Euro motor which was rated at 240hp I think. I think the extra torque will make the difference. Thanks for all of your replys and if anyone still has any facts, post 'em!
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