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I find it surprising the CW311 wasn’t a 6.8L. Despite that, the power is much higher than a regular 6.3 with a intake manifold which isn’t vastly different. Something doesn’t make sense. Oh and I was just viewing a video showing the car being assembled & transported in the AMG Mampe truck...

I find it highly unlikely they added turbos to the car & later removed them in favour of the aftermarket stacks. More likely something that was planned but never undertaken. I’d say their focus moved the the M117 & DOHC versions.

Straight from the manual... Despite the heater connections being rather irrelevant to coolant flow & engine cooling, I still believe the back cylinders would benefit from passages directly back to the water pump inlet.

Probably discontinued the same time they stopped supplying dipsticks.... You can’t treat a trans like a diff & almost never change the fluid. Far more moving parts with very tight tolerances so having a fresh oil supply is critical. The mere fact they have a filter indicates they require regular...

The silver lining is I got to it before it got any worse. If it had eaten into the inlet runner on number 8 it would’ve been game over 😱😳

Out of curiosity I checked & cleaned the inlet manifold corrosion. The hole is far worse than it looked initially. Clearly the heater connect was totally blocked yet the hose & heater tap seem clean & clear. I have no idea why the blockage formed in that area which might’ve caused isolated...

I doubt this engine has ever been acquainted with a pressure washer or steam cleaner! Totally putrid with a blocked up valley drain. Look at the build up of crud on the shelf where the heads meet the inlet manifold! I’m currently using kero & a toothbrush to degrease the whole area while being...

So in order to get the pump out I’m faced with 2 options & either one isn’t overly appealing: 1) remove the balancer. Requires a flywheel lock, 50mm socket & damn long bar. Buy or borrow a VERY strong puller, 2) remove the water pump larger housing with the pump as one unit. Requires removal...

Currently having fun getting the water pump off.... There’s a bolt right at the bottom that you can’t even see!! Strange there’s cutouts in the balancer so you get to the bolt, however you can’t remove the pump with the balancer fitted!! WTF why??? 🤷🏻‍♂️

Interesting the 6.9 one has nice tanks but the core was compromised even when it was new... Ill be headed to Aussie Desert Cooler for a new core soon.

450 & 6.9 radiators compared. They’re similar dimensions but quite different & not interchangeable.

The crud in the coolant channel near #8 was very easy to remove & I used a vac to make sure it didn’t re-enter the engine. There’s next to no corrosion in the heads from what I can see. The inlet manifold bolts screw into threaded holes in the heads which aren’t blind so it’s weird the front...

Today’s activities. Strangely I’m taking great satisfaction in buying various plugs n stoppers to stop contaminants getting into the wrong places. Armed with digital verniers I’ve been to Clark Rubber several times to purchase various rubber products. I had old stock of plastic stoppers etc when...

I haven’t used them myself, so I can’t recommend through personal experience, but others on FB have said they’re quite good. $800 for a pair. Perhaps they can even do HPF struts too?? https://www.wwshockabsorbers.com/?fbclid=IwAR1r62h-xhKMEFh4uPsWGRK-MfV3H5cZL-F33gF-Pou3hvtS4yMFyVoaCdw

Well thankfully it seems the rest of the engine looks ok! I’ll take a guess that an extended period of a lack of use during previous ownership led to corrosion deposits blocking the heater connection. Acidic coolant then attacked the area in the vicinity until it broke through the top of the...

It looks like that car survives today which makes it rather significant since it seems all of the W109s and other AMG race cars from that era are long gone... 😢

If you squint you can actually see daylight! 🤣

Good suggestion & I’ll check it out. Oh I also have to check the whole fuel system