Replacement engine
Thread Starter
Member
Joined: Oct 2017
Posts: 196
Likes: 13
2010 C63 AMG, 2015 GL450, 2018 GLS 550, 2021 GLS 450
i am told that the Journals are bad in the Head, and that I need New head. Given the state of affairs in local shops regarding Covid and whatnot, getting it machined will cost more than a new engine. Hence me looking for a new engine.
Thread Starter
Member
Joined: Oct 2017
Posts: 196
Likes: 13
2010 C63 AMG, 2015 GL450, 2018 GLS 550, 2021 GLS 450
Trending Topics
MB World Stories
The Best of Mercedes & AMG
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Mercedes Teases Updated EQS With Steer-By-Wire and a Yoke
Verdad Gallardo
MBWorld Fanatic!
Joined: Jun 2009
Posts: 1,371
Likes: 412
2010 C63 AMG
What are your symptoms ? And why did they put the cams and caps and everything back together if it’s shot? It doesn’t add up. If the journals are shot you would leave the cams out to show you the damage and then why would you pay to have it reassembled if they are toast?
Get it actually looked at before changing the head if you havent alteady seen the damage yourself. If it’s just cam lobe wear then you are only looking for a cam or cams and lifters which is the common issue in these cars, not many with journal issues I’m aware of.
Get it actually looked at before changing the head if you havent alteady seen the damage yourself. If it’s just cam lobe wear then you are only looking for a cam or cams and lifters which is the common issue in these cars, not many with journal issues I’m aware of.
Last edited by deadlyvt; Jun 24, 2021 at 05:25 PM.
MBWorld Fanatic!
Joined: Aug 2016
Posts: 2,405
Likes: 724
12 C63BS Magno Alanite Grey, 25 X5 Msport, 08 BMW E93, Ducati Hyper 698
It looks like u just need cams and buckets to me not even heads but like others have said take the bearing caps off to see if journals are bad but not heard of too many of these having shot journals.
Thread Starter
Member
Joined: Oct 2017
Posts: 196
Likes: 13
2010 C63 AMG, 2015 GL450, 2018 GLS 550, 2021 GLS 450
What are your symptoms ? And why did they put the cams and caps and everything back together if it’s shot? It doesn’t add up. If the journals are shot you would leave the cams out to show you the damage and then why would you pay to have it reassembled if they are toast?
Get it actually looked at before changing the head if you havent alteady seen the damage yourself. If it’s just cam lobe wear then you are only looking for a cam or cams and lifters which is the common issue in these cars, not many with journal issues I’m aware of.
Get it actually looked at before changing the head if you havent alteady seen the damage yourself. If it’s just cam lobe wear then you are only looking for a cam or cams and lifters which is the common issue in these cars, not many with journal issues I’m aware of.
Cams were refitted in an attempt to do a leak down test, cam wear is such that leak down isn’t possible. Compression test came back fine.
MBWorld Fanatic!
Joined: Aug 2016
Posts: 2,405
Likes: 724
12 C63BS Magno Alanite Grey, 25 X5 Msport, 08 BMW E93, Ducati Hyper 698
Everything about the shop seems suspect to me. Obviously we are all trying to diagnose this from our armchairs, but a lot of people have been through similar things with these engines. Your cam wear looks normal and not actually that bad, cams and buckets should be all you need. Is it possible journals are damages, sure but I have literally never heard of it on an M156, even the one Taso's had where the cam oil holes were not fully drilled to feed oil to the journal bearings got enough oil not to wear the journals.
Headbolts heads coming off happens fairly often, and typically does little damage, the heads don't usually go anywhere and bounce around the engine, typically you just remove the heads and bolts and new gasket and bolts and you are good, even people that have had coolant loose after the head gasket has been compromised typically just redo the bolts and gasket, unless it got hot, the head probably doesn't need resurfacing, but can be checked for true when removed. The only gotcha with broken headbolts is sometimes getting the head off as clearance is tight and depending which bolts broke may make it hard to remove the head in the car.
If it was me, I would be getting another opinion and would want to see why they say the cam journals are done and if there really is an issue with the heads, no need to do a full motor swap.
MBWorld Fanatic!
Joined: Jun 2008
Posts: 8,074
Likes: 2,867
From: Los Angeles
2012 P31 C63 Coupe Trackrat, 2019 GLE63S Coupe Beast
Obviously we were just fooling around with you. Take it to another shop, wherever you’re taking it doesn’t know what they’re doing.
Thread Starter
Member
Joined: Oct 2017
Posts: 196
Likes: 13
2010 C63 AMG, 2015 GL450, 2018 GLS 550, 2021 GLS 450
This going to the shop known as my driveway so that I can figure out what’s actually wrong and if that doesn’t work it’s 3hours to dealer.
SPONSOR
Joined: Sep 2014
Posts: 3,647
Likes: 818
From: Worldwide
2007 Mercedes E63 AMG
pull the heads...assess the damage. ensure your mechanic check the TDC height of each piston using a deck gauge to ensure no rods are bent.
Thread Starter
Member
Joined: Oct 2017
Posts: 196
Likes: 13
2010 C63 AMG, 2015 GL450, 2018 GLS 550, 2021 GLS 450
I am confused by this, how is the cam wear impact a leak down test, it's not like the cam wear is going to stop a valve from sealing. Also how did they do a compression test with 3 popped headbolts, if the compression is still good then the head gaskets are still even sealing ok.
Everything about the shop seems suspect to me. Obviously we are all trying to diagnose this from our armchairs, but a lot of people have been through similar things with these engines. Your cam wear looks normal and not actually that bad, cams and buckets should be all you need. Is it possible journals are damages, sure but I have literally never heard of it on an M156, even the one Taso's had where the cam oil holes were not fully drilled to feed oil to the journal bearings got enough oil not to wear the journals.
Headbolts heads coming off happens fairly often, and typically does little damage, the heads don't usually go anywhere and bounce around the engine, typically you just remove the heads and bolts and new gasket and bolts and you are good, even people that have had coolant loose after the head gasket has been compromised typically just redo the bolts and gasket, unless it got hot, the head probably doesn't need resurfacing, but can be checked for true when removed. The only gotcha with broken headbolts is sometimes getting the head off as clearance is tight and depending which bolts broke may make it hard to remove the head in the car.
If it was me, I would be getting another opinion and would want to see why they say the cam journals are done and if there really is an issue with the heads, no need to do a full motor swap.
Everything about the shop seems suspect to me. Obviously we are all trying to diagnose this from our armchairs, but a lot of people have been through similar things with these engines. Your cam wear looks normal and not actually that bad, cams and buckets should be all you need. Is it possible journals are damages, sure but I have literally never heard of it on an M156, even the one Taso's had where the cam oil holes were not fully drilled to feed oil to the journal bearings got enough oil not to wear the journals.
Headbolts heads coming off happens fairly often, and typically does little damage, the heads don't usually go anywhere and bounce around the engine, typically you just remove the heads and bolts and new gasket and bolts and you are good, even people that have had coolant loose after the head gasket has been compromised typically just redo the bolts and gasket, unless it got hot, the head probably doesn't need resurfacing, but can be checked for true when removed. The only gotcha with broken headbolts is sometimes getting the head off as clearance is tight and depending which bolts broke may make it hard to remove the head in the car.
If it was me, I would be getting another opinion and would want to see why they say the cam journals are done and if there really is an issue with the heads, no need to do a full motor swap.
MBWorld Fanatic!
Joined: Jun 2009
Posts: 1,371
Likes: 412
2010 C63 AMG
Thread Starter
Member
Joined: Oct 2017
Posts: 196
Likes: 13
2010 C63 AMG, 2015 GL450, 2018 GLS 550, 2021 GLS 450
MBWorld Fanatic!
Joined: Aug 2016
Posts: 2,405
Likes: 724
12 C63BS Magno Alanite Grey, 25 X5 Msport, 08 BMW E93, Ducati Hyper 698
Going back to the beginning, why did you take it to have it looked at, you said 3 headbolts gave out, but what made you take it in, was it the headbolts and it was loosing coolant or smoking white smoke, just curious what the initial reason was that they pulled it apart? Sounds like compression was low on the cylinder they test which I assume was the one where the headbolts were bad.
