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AMG3.2's DIY Headbolt Adventure

 
Old 09-18-2016, 11:22 PM
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FF. W212 E63 M156 non-pano 18" P2 ParkT NightV (gone but will be missed).
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Old 09-19-2016, 07:16 AM
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So at this point you're still going with one bolt at a time, or you switched to replacing the headgaskets?
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Old 09-19-2016, 11:25 AM
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Originally Posted by Vladds View Post
So at this point you're still going with one bolt at a time, or you switched to replacing the headgaskets?
Still going one bolt at a time method
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Old 09-22-2016, 09:47 PM
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Working on this now. Do I need to remove or loosen the spark plugs to turn the engine to 40 TDC?
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Old 09-22-2016, 10:01 PM
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no but it'll make it easier to turn. sent you PM with my number. when is the next time you plan to work on the car? finishing it up today?
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Old 09-22-2016, 10:20 PM
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Awesome - thank you! Not sure really. I'm working on it whenever I can get a chance after work! I might ping you but I'm working on it for like an hour or so at a time here and there as opposed to knocking it out in one weekend. I've got a spare car for the next two weeks -- reason being.
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Old 09-23-2016, 01:11 AM
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Pics or it didn't happen.

First a glamour shot at the end of the day:



Now some more pics:

Uhh - do these cams look brand new?



Marking everything up because I'm paranoid and still a bit uneasy about timing.





Also, when I removed the cam phasers, I didn't see this "diamond" washer anywhere... I'll have to look again but I haven't seen anything that resembles it unless it's really stuck on the phasers.

Edit: They were in there stuck to the inside of the phasers. Just remove and replace. They're just a very very thin washer.

Tappets look to be in decent shape, right?



FYI's for future DIY'ers:

The bolt to hold the cam phaser in place is a M5/8 bolt. I bought an M5/10 and it fit perfectly. FYI.

Taking the pulley just about the main crank is super beneficial to see the 40 degree marking. Super easy at that point.

Precision is key when torquing down these fasteners. Buy good torque wrenches. In my case I bought a 2 CDI's (one for low torque and one for medium to high (100 ft lbs.)

Another part needed to move cams into TDC 40 degree position after reinstalling: Locking pliers and a 28mm wrench. The longer the wrench the better as moving the cams under spring load takes a bit of muscle. Once you have the cams installed and back in their rough orientation (mark them at the beginning with nail polish like I did so you know which way is right side up) use the flatblade portion of the M156 timing tools.

I didn't understand how it worked until I saw the cams and got into it but it's super easy. The back of the cams have a horizontal notch in them. Use the 28mm wrench to move the cams around in a clockwise and anti-clockwise fashion until the flatblade slides in place at the back of the cams. Once the straight edge is in place, they hold the cams in place as the straightedge rests against the casing of the head. At this point, cams are timed. Then move on to installing the camshaft phaser.



For the phaser install, simply install them onto the cams in their rough orientation. Trust me, it doesn't matter how they go back on. However, only remove the M5-8 screw or holding device AFTER the phaser has been installed onto the cam.



After this is done, install the camshaft holding device at the front on the engine where you used your 28MM wrench. Now tighten to spec which can be found in the PDF's in this thread. With the bolt still finger tight, rotate the front piece until the plate fits on it. Those little spikes fit perfectly into the openings of the front piece and thus time it back to 40 degrees TDC.

]

Tighten the phaser bolts (new hardware) and make sure to install a new diamond washer where the phaser meets the cam (if memory serves me correctly)

Last edited by AMG3.2; 07-20-2017 at 11:24 AM.
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Old 09-23-2016, 02:04 AM
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niceeee...your cams and buckets look good in my opinion. lmk if you can work on your car on the weekend and I'll swing by.
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Old 09-23-2016, 07:13 AM
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Is your opinion that the heads can come out with the engine still in the bay?
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Old 09-23-2016, 09:14 AM
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I'd even consider returning the new tappets.
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Old 09-23-2016, 09:31 AM
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Put the new lifters in, I didn't know mine, they looked the same as yours. Now they are making noise on start ups and losing prime.

You didn't need to fully remove the cam phaser from the cam just loosen the bolt is fine, no big deal but just makes it easier.

Yes the heads can come off with the engine in the bay. Unless you have arp head studs then you can't.

Don't worry about markings on the cams. With the tools and when you see how they work and understand, it's impossible to physically put them in wrong with the 3 tools installed and the engine at 40 degrees.

Taking that pulley off is way easier to see the 40 mark, good tip.
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Old 09-23-2016, 09:40 AM
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Originally Posted by Merc63 View Post
Put the new lifters in, I didn't know mine, they looked the same as yours. Now they are making noise on start ups and losing prime.
I'm curious if they updated the oil reservoir at all in the updated M156 design. How many km were on your motor when you did the bolts and what are you at now?
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Old 09-23-2016, 10:53 AM
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Originally Posted by Merc63 View Post
Put the new lifters in, I didn't know mine, they looked the same as yours. Now they are making noise on start ups and losing prime.

You didn't need to fully remove the cam phaser from the cam just loosen the bolt is fine, no big deal but just makes it easier.

Yes the heads can come off with the engine in the bay. Unless you have arp head studs then you can't.

Don't worry about markings on the cams. With the tools and when you see how they work and understand, it's impossible to physically put them in wrong with the 3 tools installed and the engine at 40 degrees.

Taking that pulley off is way easier to see the 40 mark, good tip.
Rookie mistake.

Took one head bolt out and realized I didn't drain the coolant. I kept pumping the coolant from the bolt hole and was like damn this is a lot. I made sure to vaccuum all of the coolant from the bolt holes though.



Bolt looked pretty good actually. Will post pics possible later today if I keep working on it.

I can have a bolt removed from the engine for an hour or two without worries or some type of gasket failure or something right?

Also, when do I do the oil change? Right after I'm all done and before starting the car, or let it run for a few mins then do it??


EDIT: Merc and Jasonoff, just to play it safe, I'll just go ahead with replacing the tappets.

Last edited by AMG3.2; 07-20-2017 at 11:32 AM.
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Old 09-23-2016, 06:59 PM
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Just to clear things up for my self. There a few terms being used for the same part here possibly just need to confirm if correct. Tappet is also referred as the bucket and also referred as the lifters? Or are these three completely different parts that are recommended to be changed but in this post only the tappets are being replaced?
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Old 09-23-2016, 07:32 PM
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Same same same
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Old 09-23-2016, 11:28 PM
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Originally Posted by BLKROKT View Post
Same same same
x2

https://en.wikipedia.org/wiki/Hydraulic_tappet

Hydraulic bucket tappet design in the M156 which is a "hydraulic valve lifter".
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Old 09-24-2016, 07:45 AM
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Originally Posted by AMG3.2 View Post
Rookie mistake.

Took one head bolt out and realized I didn't drain the coolant. I kept pumping the coolant from the bolt hole and was like damn this is a lot.

Bolt looked pretty good actually. Will post pics possible later today if I keep working on it.

How many miles are on your car and can you post a picture of this bolt?
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Old 09-24-2016, 01:23 PM
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52k miles

Also, can someone chime in on this? Have no clue what I should do re: oil change?

When do I do the oil change? Right after I'm all done and before starting the car, or let it run for a few mins then do it??

Last edited by AMG3.2; 07-20-2017 at 11:26 AM.
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Old 09-24-2016, 01:47 PM
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Holy crap! Good thing you decided to do this now, those bolts look BAD.
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Old 09-24-2016, 02:33 PM
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The bolt by bolt is not that common. One concern could be to know if there's coolant in the oil. If there was, it would show as "milkshake" on the dipstick and the coolant would settle at the bottom of the oil pan, below the oil.
Another thing I would do, once the initial outcome is good and you start up fine, is to buy that chemical head gasket tester kit from pep boys and confirm that they are still in good shape.
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Old 09-24-2016, 02:57 PM
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Originally Posted by BLKROKT View Post
Holy crap! Good thing you decided to do this now, those bolts look BAD.
Nah. These look bad.
Attached Thumbnails AMG3.2's DIY Headbolt Adventure-broken_bolt_1.jpg   AMG3.2's DIY Headbolt Adventure-broken_bolt_4.jpg  
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Old 09-24-2016, 03:26 PM
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Originally Posted by bhamg View Post
Nah. These look bad.
Well yeah, those are next-level bad. Did the heads snap off on their own, or while you were removing?
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Old 09-24-2016, 06:33 PM
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Originally Posted by AMG3.2 View Post
52k miles

Also, can someone chime in on this? Have no clue what I should do re: oil change?

When do I do the oil change? Right after I'm all done and before starting the car, or let it run for a few mins then do it??
They look pretty nasty. I'm at 114k km (~70k miles) and I think I just started consuming coolant.

I would say the oil change before or after wouldn't matter. Your HG wasn't compromised.
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Old 09-24-2016, 07:50 PM
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You could run it then change the oil shortly after.
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Old 09-25-2016, 04:38 PM
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Finished the job and started my car.

Well. Looks like I messed up somewhere along the way. FML to the utmost extreme.

Three things happening that are leading me to this conclusion.

1) Loud tapping noise that wasn't there before. Almost like now my tappets have gone bad.
2) Smoke coming from both sides of the engine. Could be burning residual oil spoiled while removing bolts etc, but thinking it's just a compromised head gasket.
3) When I shut the engine off, a hissing noise occurs immidately. Again, thinking somewhere in the cooling system, there's a void.

Video:

http://vid77.photobucket.com/albums/...pshe5pojvw.mp4

More coming soon

So lifter noise has subsided alot. Much better now and I think the smoke is burning oil off the headers. It doesn't smell like coolant so I'm feeling a bit better.

Still don't know about the hissing noise after I turn the car off though.

Last edited by AMG3.2; 09-25-2016 at 04:56 PM.
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