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      07-22-2011, 02:44 AM   #1
JLR1969
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New SLK 55 Engine with 4 pot mode

http://www.pistonheads.co.uk/news/de...?storyId=23991

Very interesting development from AMG.

SLK 55 will have 420 BHP return 33 mpg and have a 4 pot mode to save fuel.

Co2 emissions also reduced
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      07-22-2011, 02:53 AM   #2
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Cool indeed and great stats for V8 errm V4

I also remember this was tried in the 90's ...Vauxhall Carlton GSI 3000 had it (remember reading the review!)...so that got me Googling, looks like Merc have doen this before:
http://en.wikipedia.org/wiki/Variable_displacement
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      07-22-2011, 03:06 AM   #3
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GM were doing it in 1979
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      07-22-2011, 03:09 AM   #4
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Not doing it properly i would guess. Fuel was a lot cheaper then as well so maybe as a business case the figures did not stack up.
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      07-22-2011, 03:50 AM   #5
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Quote:
Originally Posted by JLR1969 View Post
Not doing it properly i would guess. Fuel was a lot cheaper then as well so maybe as a business case the figures did not stack up.
More about the owners not liking the idea of their V8's not always being one.
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      07-22-2011, 09:19 AM   #6
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Idea makes a lot of sense.

Dont need that sort of power stuck in traffic - might as well limit it and save it for when its needed.

Should result in lower tax band too id guess?
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      07-22-2011, 10:23 AM   #7
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Quote:
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Idea makes a lot of sense.

Dont need that sort of power stuck in traffic - might as well limit it and save it for when its needed.

Should result in lower tax band too id guess?
Currently the tax is 460 with the new engine its 245 which is pretty good for 422bhp
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