Anyone heard of a timing chain issue in the S63 engine?

[mrsoandso]

Originally Posted by do_0b

well timing skipped, so the indy shop adjusted the timing chain but then its still skipping so with the camera they were able to see that a sprocket broke all of its teeth. Shop is quoting me 50 hours of labour to pull it out, replace and put it back.

Something doesn't add up. If your timing skipped, you most likely wouldn't have a running car. And if it did skip, then you most likely would have your valves inside your oil pan after smashing through your piston heads.

There's no way a sprocket with all teeth broken, and skipping, would allow your car to run, and if it did actually run, it would run like shit and would sound a lot worse than your audio clip.


If it was me, I would get a 2nd opinion. Maybe even a third.

Edit: unless it's an idler sprocket. I was under impression it was the sprocket attached to the cam shaft.

[TwinSnailz]

A lot of stuff doesn’t make any sense. Like ^he said, your valves would have been bent and it will be more than just replacing a sprocket.
But hey it’s your pocket. We’re just helping a fellow out.

[BigHunk]

If sprocket broke, your engine wouldn't even run.
Get a car for 2nd opinion to someone who knows Bmw.

[do_0b]

Originally Posted by BigHunk

If sprocket broke, your engine wouldn't even run.
Get a car for 2nd opinion to someone who knows Bmw.

yeah im getting a bmw tech to look at it. he also thinks the crankshaft sprocket cant be broken, like you guys say the engine wont run. Right now only one side of the engine is running the other side no power.

[do_0b]

Originally Posted by mrsoandso

Something doesn't add up. If your timing skipped, you most likely wouldn't have a running car. And if it did skip, then you most likely would have your valves inside your oil pan after smashing through your piston heads.

There's no way a sprocket with all teeth broken, and skipping, would allow your car to run, and if it did actually run, it would run like shit and would sound a lot worse than your audio clip.


If it was me, I would get a 2nd opinion. Maybe even a third.

Edit: unless it's an idler sprocket. I was under impression it was the sprocket attached to the cam shaft.

but if its an idler sprocket...it can be changed without pulling the engine no?
also it runs like shit....its in limp mode with only one side of the engine running lol

[mrsoandso]

Originally Posted by do_0b

but if its an idler sprocket...it can be changed without pulling the engine no?
also it runs like shit....its in limp mode with only one side of the engine running lol

I'm not the s63 has idler sprockets. I don't recall seeing them in a tear down i saw a while ago.

Let me just put it this way, if your cam gear really was completely stripped, it's probably new motor time.

Can you post a video of it running?

[do_0b]

Originally Posted by mrsoandso

I'm not the s63 has idler sprockets. I don't recall seeing them in a tear down i saw a while ago.

Let me just put it this way, if your cam gear really was completely stripped, it's probably new motor time.

Can you post a video of it running?

its at ashop currently....gonna tow it to the bmw tech that deals with e70/e71s, he said he can fix it np so i hope hes right..car turns on but shakes like hell and is in limp mode...other than that nothing else is different

[do_0b]

update: So indy shopped called me and said bearings have spun and the engine has metal fillings inside. Time for a new motor or rebuilt. Anyone know if i can somehow get insurance to cover this?

[TwinSnailz]

Your indy went from ticking noise to misfire to broken sprocket and now spun rod. Which is it? Or all of the above?

Will you get to see the shavings? Matter of fact, will you get to see your new motor? So many red flags here.

[do_0b]

Originally Posted by TwinSnailz

Your indy went from ticking noise to misfire to broken sprocket and now spun rod. Which is it? Or all of the above?

Will you get to see the shavings? Matter of fact, will you get to see your new motor? So many red flags here.

first shop said it was sprocket but they were wrong. BMW indy now telling me rod bearing spun and there is metal filling..i will go and have a look personally this week when i have time.

[s390er]

https://www.xbimmers.com/forums/show....php?t=1611893

PLEASE CHECK THIS THREAD AND REPORT THIS COMPLAINT TO CANADIAN AND US SAFETY SITES TO SHOW BMW THAT THE S63 is facing same issues as N63 , many owners left with out of pocket expenses