SL55/63/65/R230 AMG: Turbocharger design
Thread Starter
Member
Joined: Jun 2005
Posts: 187
Likes: 3
From: Bay Area, CA
05 E55, 07 SL65, 06 S4
Turbocharger design
I am rather surprised to notice that AMG does not use water cooled bearings, a set-up used on much lesser cars to increase turbocharger life.
Does anybody have information on the thinking or engineering supporting this selection?
Does anybody have information on the thinking or engineering supporting this selection?
MBWorld Fanatic!
Joined: Dec 2004
Posts: 4,268
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the only thing i can think of is that larger low-compression engines with little overlap in camshaft phasing have naturally low exhaust temps. thus, maybe ze germans decided that there is no need for water cooled bearings.
besides, modern ballbearing turbos are far less susceptible to cooking oil so oil cooling is prolly sufficient and keeps things somewhat simpler.
alex
few cars
besides, modern ballbearing turbos are far less susceptible to cooking oil so oil cooling is prolly sufficient and keeps things somewhat simpler.
alex
few cars
Thread Starter
Member
Joined: Jun 2005
Posts: 187
Likes: 3
From: Bay Area, CA
05 E55, 07 SL65, 06 S4
Correction
After getting access to more pictures and engineering designs, I found that there is in fact a coolant supply (from the bottom) and rises through the t/c bearing to keep temperatures in check - particularly after engine shut down.
now I can sleep much better again.... 
now I can sleep much better again....
