SL/R230: V12 Engine/Motor Mount Swap in 2017
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04 SL600
V12 Engine/Motor Mount Swap in 2017
Is it still the case that on all R230 V12s (including the unicorn 2009 model) that a motor mount swap requires complete removal of the engine? Did Mercedes revise the part at all, or is there an aftermarket solution so you don't have to do this every 30k miles? Thanks in advance!
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2011 E550 Coupe, 1992 Corvette ZR-1, 1991 368ci ZR-1, 1990 ZR-1, 1987 Callaway TT, 05 SL600, CLA45
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Is it still the case that on all R230 V12s (including the unicorn 2009 model) that a motor mount swap requires complete removal of the engine? Did Mercedes revise the part at all, or is there an aftermarket solution so you don't have to do this every 30k miles? Thanks in advance!
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From: Welwyn, Herts, UK
2006 S600
Is it still the case that on all R230 V12s (including the unicorn 2009 model) that a motor mount swap requires complete removal of the engine? Did Mercedes revise the part at all, or is there an aftermarket solution so you don't have to do this every 30k miles? Thanks in advance!
My car is different, but I'm familiar with the differences - the motor mounts are in a different position on the R230, but that doesn't affect the result.
I supported the engine and dropped the subframe. It's not for novices, and there's a couple of things to be aware of, but it's straightforward.
Nick
Last edited by Welwynnick; Jul 2, 2017 at 01:25 PM.
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04 SL600
I replaced the motor mounts on mine, without removing the engine.
My car is different, but I'm familiar with the differences - the motor mounts are in a different position on the R230, but that doesn't affect the result.
I supported the engine and dropped the subframe. It's not for novices, and there's a couple of things to be aware of, but it's straightforward.
Nick
My car is different, but I'm familiar with the differences - the motor mounts are in a different position on the R230, but that doesn't affect the result.
I supported the engine and dropped the subframe. It's not for novices, and there's a couple of things to be aware of, but it's straightforward.
Nick
Thats good to hear. Could you just expand on "my car is different?" It sounds like on the R230 you can support the motor and do it similar but maybe not because your car is different. Thanks!
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From: Welwyn, Herts, UK
2006 S600
The SL has the engine mounted further back than in the CL or S. The motor mounts are immediately behind the steering rack, rather than just in front of it. Therefore the subframe is different.
On the w220, the rear subframe mounting bolt heads form a kind of pivoting axis that neatly intersects the universal joint at the bottom of the steering column. Therefore the subframe can be lowered by removing the front mounting bolts and just loosening the rear ones, and the subframe can pivot down without having to disconnect the steering rack.
This may be different on the R230, so while I'm sure you can still drop the subframe, you may need to disconnect the steering, that's all. The PAS return line and PAS & ABC electrical connections may have different routings, too.
The V12TT motor mounts are a particular nightmare. I have lots of picture to illustrate what I did if you wish.
Nick
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