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The timing cover removal is engine out job.
I tracked its procedure and cylinder heads must come off.
The cylinder head gasket is sandwich-ded by cylinder head and surely engine block, but a bit of it is also sandwich-ded by timing cover.
Green zone is timing cover, red zone is cylinder head only, the gasket is shared using cylinder head gasket.
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The oil pan also sandwich-ded the timing cover and using loctite sealant.
Since sealant is used on oil pan, I can not slide in the timing cover stand alone, it has to be first installed and then sandwich-ded by oil pan with new sealant,
and then install cylinder head. I mean sealant is for shoe box style closing and not slide-in like a drawer.
As for oil pan, I done measurement for engine intact-in-car and lifted up a bit, there is a chance oil pan may not be able to be removed due to lack
of clearance.
So engine out job is best + additional refreshed parts target for 2028, which I may move forward sooner, depending on how good I can clean engine block this session.
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Similar to the Porsche 3.0/3.6TT 90-degree cold vee V6 used in Macan, Panamera and Cayenne. Engine is notorious for timing cover screw failure. Timing cover removal and replacement is very sensitive to position and sequence because of the use of sealant and 3-component joints (bad design).
or make your own acid by buying straight citric acid....
It takes a strong acid for Calcium. Magnesium generally mixed with Sulphate is just Epsom salts and dissolves in water. Silica needs a strong base. Sulphur basically can not be dissolved. Calcium can combine with many other elements and when with magnesium its favorite friend, is most available in an acidic form. As a kidney stone sufferer and in the hort industry I feel my life is one big balance of Ph.
It also takes a strong acid to clean the aluminum and it cleans by etching which is why it can be so dangerous.
Most off the shelf products are going to be safe and you might need something a little less safe but more effective. And safe is relative siince you are obviously very very well researched and compile lots of complicated information
or make your own acid by buying straight citric acid....
It takes a strong acid for Calcium. Magnesium generally mixed with Sulphate is just Epsom salts and dissolves in water. Silica needs a strong base. Sulphur basically can not be dissolved. Calcium can combine with many other elements and when with magnesium its favorite friend, is most available in an acidic form. As a kidney stone sufferer and in the hort industry I feel my life is one big balance of Ph.
It also takes a strong acid to clean the aluminum and it cleans by etching which is why it can be so dangerous.
Most off the shelf products are going to be safe and you might need something a little less safe but more effective. And safe is relative siince you are obviously very very well researched and compile lots of complicated information
Thanks. Me hate chemistry.
I look at coffe machine descaler .
That timing cover area, that is an area of concern for me. It looks like the timing chain housing is open to any type of contaminants falling in there. Contaminants in that area, while the engine is running is catastrophic. Are you doing anything to keep that area clear and sterile? No matter how careful any mechanic is, around an open hole, sooner or later something will fall in there.
Also, if the timing chain area is easily accessible, have you considered replacing it? Cloyes gear and products makes very nice timing component replacement kits. Of course there are a number of other products other than OEM in the same category.
This session I will not touch the timing chain region.
I have all the parts already and will replace everything timing chain related by 2028, due to the plastic guides worry.
Timing chain tensioner also will be replaced all 3, 3rd one is oil pump timing chain.
There is one plastic guide which is not sold separately, instead I must buy the timing chain.... so I bought new timing chains L and R side.
So I must buy C to get A , and get B too.
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All above is timing chain region stuff, but not yet including the 3 timing chain tensioners.
Divided by 15,200 to 15,500 you get the US$ price of March 2024, where my Rupiah was still better at 15,200 gets me 1 US$. Today its 16,300 ish to get 1 US$.
The 3 chain tensioners
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Last edited by S-Prihadi; Jun 26, 2025 at 11:42 PM.
Reason: ADD INFO
Taking a break for 1 week. I want to run to Bali. It is 22C there now, getting wind from Oz winter.
At that temperature at sea level, for me a Jakarta based dude, is like heaven sent weather....I know its lame for a 4 season country guy...
I also need to take a peek at my friend's recently procured mega yacht. I want to "jerk-off" inside the engine room .
I love mega yachts engine room. The cleaner they are, the more I drool.
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Towels to keep dust off my engine bay. My car cover can't cover the car with maximum open hood.
I am demumifying the interior now. Its up to 70% RH already, not good.
enjoy your time away from this project.
Van you show us what sort of engine room controls they have.
Is that 2x diesels to propeller or to generators with electricly driven props ?
She uses Catterpillar C32. Its a V12 diesel and would be the long range duty tuned/rating, only 1,320HP each. In normal yachts tuned/rating this engine is 1,900HP.
Only 140 feet or 43 meters. The hull family is this one : 460 Expedition , https://www.sanlorenzoyacht.com/uk/superyacht/x.asp
This is pure diesel and not electro-diesel like Paul Allens ( Microsoft ) M.Y Octopus which is 414 feet. I would beg to be able to see Paul Allen's M.Y Octopus engine room.
The SanLorenzo Exp 460 sistership engine room is below :
This is production yacht made in Italy and not fully custom yacht like M.Y Octopus, which is built by Lurssen in Germany.
I bet the instrumentation is not as insane as custom long range yachts.
I will take lots of photos of engine room and command bridge for sure.
Luxury Interiors on yachts does not excite me.
C32 is a who-re engine used on many things, including power generation. Its older brother used to be called Cat 3412 in the 90s.
C32 in D11 it is set at only 900ish HP.
I like how these big engine manufacturers knows how to de-tune their engine to fit the intended service life of the equipment.
I often laugh when people tune their car engine and thinks it will be as reliable as stock engine.
Learn from commercial diesel engine people, where even 500 to 200 RPM reduction peak RPM can mean a few thousands more engine hours extended life.
Tug boat 1,800 RPM, Ferry 2,100 RPM, Yachts 2,300 RPM. Same engine, but de-rated or up-rated for power and max RPM, depends how you see it.
C32 is a who-re engine used on many things, including power generation. Its older brother used to be called Cat 3412 in the 90s.
C32 in D11 it is set at only 900ish HP.
I like how these big engine manufacturers knows how to de-tune their engine to fit the intended service life of the equipment.
I often laugh when people tune their car engine and thinks it will be as reliable as stock engine.
Learn from commercial diesel engine people, where even 500 to 200 RPM reduction peak RPM can mean a few thousands more engine hours extended life.
Tug boat 1,800 RPM, Ferry 2,100 RPM, Yachts 2,300 RPM. Same engine, but de-rated or up-rated for power and max RPM, depends how you see it.
That wood be a good case to read the live engine reports or log live data the way you excel at doing.
Same basic tricks may be used "to save gas" .... low oil pressure until extreme heat forces Tstat 100% opening.
They use ultra high performance diesel engine oil, like Fuch Titan Cargo latest version.
I am more familiar with MAN engines, their oil list has normal oil and ultra high performance oil approval list.
I like Fuch, it is awesome for long non stop volyage. 10W-40 is the highest they would go, no 50 viscosity.
==============
I have 1 more hour before going to the airport. So me wondering on when I have to do internal coolant gallery cleaning,
when and if huge ultrasonic machine is not available or not effective.
M276.xx is open deck design, so cleaning the gremlins physically is possible.
.
The red zone is what my boroscope can see.
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Decent working space to send in cleaning brush :
.
I was looking at cleaning brush :
This is supposedly mild abrassive, 120 grit, 240 grit and 340 grit.
I think this two type of cleaning rods can work.
I should also clean all oil galleries when engine torn open.
I made a list which to buy :
The SS hairy metal brushes
01. Diameter 2.6mm, total length 150mm x 3 pcs
02. Diameter 3mm, total length 150mm x 3 pcs
03. Diameter 5mm, total length 150mm x 3 pcs
04. Diameter 6.5mm, total length 150mm x 3 pcs
05. Diameter 8mm , total lenth 150mm x 3 pcs
06. Diameter 10mm , total length 160mm x 3 pcs
07. Diameter 12mm, total length 160mm x 3 pcs
08. Diameter 15mm, total length 160mm x 3 pcs
09. Diameter 18mm, total lengh 160mm x 3 pcs
10. Diameter 20mm, total length 160mm x 3 pcs
11. Diameter 22mm, total length 160mm x 3 pcs
12. Diameter 25mm, total length 160mm x 3 pcs
13. Diameter 30mm, total length 160mm x 3 pcs
14. Diameter 35mm, total length 160mm x 3 pcs
===========
The honing brush :
Diameter 6mm, grit 120, length 200mm x 3 pcs
Diameter 6mm, grit 240, length 200mm x 3 pcs
Diameter 6mm, grit 320, length 200mm x 3 pcs
Diameter 8mm, grit 120, length 200mm x 3 pcs
Diameter 8mm, grit 240, length 200mm x 3 pcs
Diameter 8mm, grit 320, length 200mm x 3 pcs
Diameter 10mm, grit 240, length 200mm x 3 pcs
Diameter 10mm, grit 320, length 200mm x 3 pcs
Diameter 12mm, grit 240, length 200mm x 3 pcs
Diameter 12mm, grit 320, length 200mm x 3 pcs
Diameter 11mm, grit 320, length 200mm x 3 pcs
Diameter 14mm, grit 320,length 200mm x 3pcs
Diameter 15mm, grit 320, length 200mm x 3pcs
Diameter 16mm, grit 240, length 200mm x 3 pcs
Diameter 16mm, grit 340, length 200mm x 3 pcs
Diameter 18mm, grit 240, length 200mm x 3 pcs
Diameter 18mm, grit 320, length 200mm x 3 pcs
Diameter 20mm,grit 120,length 200mm x 3pcs
Diameter 20mm,grit 240,length 200mm x 3pcs
Diameter 20mm,grit 320,length 200mm x 3pcs
Diameter 24mm, grit 120, length 200mm x 3 pcs
Diameter 25mm, grit 240, length 200mm x 3 pcs
Diameter 25mm, grit 320, length 200mm x 3 pcs
Diameter 30mm, grit 120, length 200mm x 3 pcs
Diameter 30mm, grit 240, length 200mm x 3 pcs
Diameter 30mm, grit 320, length 200mm x 3 pcs
All these would be under US$200 for sure. But I can't ship direct Indonesia, AliExpress been banned due to dishonest under-declared invoice for export and
price dumping. No worry, I have submarine method to import these into Indonesia.
They use ultra high performance diesel engine oil, like Fuch Titan Cargo latest version.
I am more familiar with MAN engines, their oil list has normal oil and ultra high performance oil approval list.
I like Fuch, it is awesome for long non stop volyage. 10W-40 is the highest they would go, no 50 viscosity.
==============
I have 1 more hour before going to the airport. So me wondering on when I have to do internal coolant gallery cleaning,
when and if huge ultrasonic machine is not available or not effective.
M276.xx is open deck design, so cleaning the gremlins physically is possible.
.
The red zone is what my boroscope can see.
.
Decent working space to send in cleaning brush :
.
I was looking at cleaning brush :
This is supposedly mild abrassive, 120 grit, 240 grit and 340 grit.
I think this two type of cleaning rods can work.
I should also clean all oil galleries when engine torn open.
I made a list which to buy :
The SS hairy metal brushes
01. Diameter 2.6mm, total length 150mm x 3 pcs
02. Diameter 3mm, total length 150mm x 3 pcs
03. Diameter 5mm, total length 150mm x 3 pcs
04. Diameter 6.5mm, total length 150mm x 3 pcs
05. Diameter 8mm , total lenth 150mm x 3 pcs
06. Diameter 10mm , total length 160mm x 3 pcs
07. Diameter 12mm, total length 160mm x 3 pcs
08. Diameter 15mm, total length 160mm x 3 pcs
09. Diameter 18mm, total lengh 160mm x 3 pcs
10. Diameter 20mm, total length 160mm x 3 pcs
11. Diameter 22mm, total length 160mm x 3 pcs
12. Diameter 25mm, total length 160mm x 3 pcs
13. Diameter 30mm, total length 160mm x 3 pcs
14. Diameter 35mm, total length 160mm x 3 pcs
===========
The honing brush :
Diameter 6mm, grit 120, length 200mm x 3 pcs
Diameter 6mm, grit 240, length 200mm x 3 pcs
Diameter 6mm, grit 320, length 200mm x 3 pcs
Diameter 8mm, grit 120, length 200mm x 3 pcs
Diameter 8mm, grit 240, length 200mm x 3 pc
..../...
All these would be under US$200 for sure. But I can't ship direct Indonesia, AliExpress been banned due to dishonest under-declared invoice for export and
price dumping. No worry, I have submarine method to import these into Indonesia.
This job is gonna come out clean and shinny like your intake valves cleaning session.
Do you need to order NEW HEAD BOLTS... I think they are one-time "torque to yield", right?
Happy vacation break.
+++ C32 DIRECTLY INJECTED DIESEL...
That means a lot of things can happen to detune these great engines. I would not be surprised about limited power output issues.
12 cylinders contribution that must each individually satisfy the ECU reading CKP timings. Then shutting off injectors in the wild.
What else shares the ECU control bus on these machines... remote fuel pump modules on long harnesses. Seal connections!!!
Last edited by CaliBenzDriver; Jun 30, 2025 at 03:02 PM.
I decided to NOT use the sulfamic acid.
It will damage aluminum, so I read.
------------------------
Right side turbocharger is out today, so that I can inspect the coolant port corossion better.
This time, 4 of the exhaust stud, 2 decided to stay put and surrender its nut to me.
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.
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Because I have removed the LEFT turbocharger, now I know better the preparation to smoothen the process for RIGHT side one.
QUICK WARNING :
If anyone wants to replace only the top side ( INPUT) oil lubrication hose for the turbo and RIGHT SIDE or Bank 1, the hose will never be able to be removed away from the turbo due to space limitation and
the fixed steel shape of the hose ends bends. You need to remove the turbo, or at least loosen the turbo from exhaust manifold to make extra 5-10mm clearance.... DAMN !!!!
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The coolant ports on turbo not too bad, this RIGHT side turbo
Clean it with this type of wire brush
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I ended up cleaning the EXTERIOR of my hvac condenser, tranny oil cooler and charged air heat exchanger.
Albeit they look clean, they are not really clean.
Condenser. Simple Green + Dishwasher liquid soap
.
This brush is very gentle, not bad
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Tranny Oil cooler and charged air heat exchanger
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Below is round 1# cleaning, another round produced also this much sand/dirt.
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Tranny oil cooler
Charged air heat exchanger
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CLEANED
I think per 5 years is good to clean all them above and surely the radiator too.
-----------------------
Bugs smashing condenser allows their fats/oil to accumulate at condenser.
Condenser is firts layer, charged air heat exchanger and tranny oil cooler is 2nd layer.
Engine radiator is last layer, the 3rd.
If your engine bay is dirty from leaking VVT mini window and whatever other leak, your radiator can be oily at the fins.
Before I cleaned all above, I was practicing with a a used ( not leaking ) radiator of W204 C200 which I told my friend to retire it at 15th years old.
Tranny oil cooler leak fear. Its a combo unit. Below :
This radiator external is so dirty, it does made it a good practice unit.
The internal of this radiator is so clean, free of gremlins....I am so jelous....why me so bad luck
New radiator arrived today, but engine oil cooler not yet, coz I ordered 23rd June and its a 30 days wait.
Radiator was 18th June order.
The P/N of the new Valeo radiator matched the EPC and UNFORTUNATELY I got the radiator with tranny oil cooler built in....no choice.
Still there is a mystery as to why my original readiator drain plug female port has no latch .
The new radiator has drain female port has the latch as expected and the drain plug is so easy to spin and automatically pops out 1 cm or so, unlike my radiator which I need to pull the drain plug.
Here is what I mean by latch : ( maybe my latch broken on the old one ??? ).
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Even though new, still slight mishandling during manufacturing.
Ugh. The materials that make up the radiator cooling fins are so delicate. It’s almost like breathing on them will bend them.
Since your new radiator has provisions for transmission cooling, will you consider refitting your system to a modified transmission cooling system ?
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.
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, it does made it a good practice unit.
...why me so bad luck
