TonyGia

hey guys, may be toying around the idea of swapping an engine here from a donor car.. My car is an W211 E63, want to put in a lower mileage m156.


Does the donor engine have to be out of an W211 E/ W219 CLS (to make sure mounts line up)? Or can it be any M156? Such as, out of a w204?

hachiroku

if you're swapping a M156 from any chassis to your car which has an M156 any mismatched items can be taken from your engine. engine mounts for pretty much most but not all M156 configurations are compatible. W204 will have a different intake y-pipe. the W211 M156 is the higher flow y-pipe. headers will be different.

here are all the chassis's that utilize compatible engine mounts.
https://www.fcpeuro.com/products/mer...538475#fitment

TonyGia

So a W204 M156 should be compatible minus a few parts that can be taken from my current assembly?

Manifolds, Engine Harness, and Mounts?

austingtir

^^ Correct

The manifold is the biggest pita as its only like one plug that I think is different. But its a good chance to pull the manifold down and check it for that alloy corrosion problem and paint it or expoxy it if need be.

mertd93

Oil pan might be different too.

austingtir

Not on the w204. ML yes.

TonyGia

Got it. It's been super difficult tracking down any info. Also even harder to find a decent mileage motor out of a w211/w219 body car

Bear S63

I have an s63 M156 and was sold an M156 engine from a C63 are these parts interchangeable?

hachiroku

what parts? aftermarket parts all fit besides headers I'm guessing

Strigoi

Buy first, ask questions later. Real smart.

coupesedan

It’s the AMG way