Took advantage of the superb sunshine and mostly clear blue skies for three hours working on the car. Progress is slow removing the Cylinder Head due to numerous reasons, mostly beyond my control.
First I drained the coolant by releasing two of the lower Constant Pressure Clips either side of the PRT ( Pressure Relief Thermostat ) and carefully pulled the big hoses away from the PRT. Lots of dirty coolant rushed out. I used a large plant pot drip tray to collect the coolant. Then poured it carefully into a plastic container. I will not reuse it and here's why. That's not Gold Dust but traces of "snake oil" coolant additive. It most certainly would not stop the unseen small split under the short hose connected to the T-Piece.
I half suspected to see something like that as there were traces in the Coolant Expansion Bottle. I will use SPEEDFlush when repaired car is up and running. That will effectively clear any unwanted stuff from the whole cooling system including the Heater Matrix.
Next job I always not like to do. Undoing the four nut/studs which secure the Exhaust Manifold to the Exhaust Downpipe/Turbocharger. There are three upward facing studs with 13mm Nuts, these were Hex Nuts ( six sided ) but earlier cars often had Bi-Hex ( twelve points ). The fourth stud nut faces downwards and is always difficult to access and undo. This one above the Wastegate Opening Crank.
In the past, to provide better access, I have disconnected that Wastegate Actuator Rod by releasing that pesky C-Clip ... which usually springs away at Mach 1 into the Unknown.
Been there done that and will not need to do that today on the Hex-Nut. Will deploy ... Enter the 13mm Crow's Foot Socket ...
It worked perfectly ... Hoo-bleedin-Ray ...
The upward facing Stud Nuts were much easier to deal with once sprayed liberally with Penetrating Fluid., Again the Crow's Foot Socket helped access that one Nut shrouded by the Manifold itself.
That done, turned my attention to the top of the engine. Undone the 13mm bolt and its 15mm Nut which holds the Alternator, and now free, pushed it towards the radiator to allow access for Cylinder Head removal later. Then undid and stored all fifteen 8mm Bolts which hold the Camshaft Cover and its Gasket in place. Those lifted off easily revealing a coolant-mix free Camshaft assembly Area. Good to see that. So if there is escaping compression gasses over pressuring the Cooling System, oil does not appear going that way at all. There may not be anything wrong with the CHG. I will fit a new one anyway along with a pre-prepared Cylinder Head assembly. Here's what was revealed with cover removed :~
That allowed access to the Ten Through Bolts and all ten were undone a few turns once I had rotated both Camshafts to allow access to the two through bolts between Cylinders three an four which are usually blocked by Camshaft Sensor Half Moon Lobes which are always in the way.
Half way through this work, a near neighbour who usually finishes work early on a Friday, fired up his 6.2 Litre V8 Mercedes-Benz weekend car. Lovely noise.
Want to come for a ride John? Damn... I had to decline his kind offer as it would take best part of twenty minutes to collect up all the kit and tools and lock them away. I was promised another time.
Then used my Blue ZT-T to visit a relative nearby as my back reminded me I am no longer in my mid-thirties and it had had enough... Tomorrow's another day..