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Message: <blockquote data-quote="rollakid" data-source="post: 684938" data-attributes="member: 6588">mercedes did cut cost since 10 years ago, thats why you view those customer survey thing from europe or USA, mercedes mostly on the bottom third. i dun really know why until i watch top gear, saying mercedes cut cost.but anyway, we are talking about AMG here, and i dun really think they will cut cost on their top of the range engine (speaking this, merc other than the amg range seems like underpower rubbish -- no offence to merc owner tho, just my 2 cent).so here's my point of view why merc amg and its DTM car use sohc or 3 valve/cylinder. like what they all have been saying, sohc or 3valve/cylinder is better at low rpm range. moreover, the supercharger they use isn't centrifugal type(at least i think so, dunno mistake or not), thus the power come at low end and lost its effecientcy at high rpm. so why bother make a dohc 4 valve that makes power at high rpm?AFAIK, their special edition road going verison of their DTM machine redline at 7k rpm, so i think sohc probably already enough.on the other hand, bmw m series have to rev to something like 7900rpm to reach its peak hp cuz its NA, so surely they need DOHC and 4valves.just my 2 cent view on this matter tho.. and another way to put it is.... go supercharge all your SOHC proton :D</blockquote>

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