[sccowboy]

Hi, I have a 2013 528i S Drive. Upon leaving my house and accelerating up to about 40 MPH the engine started making an odd noise and losing power. As I was looking for a place to pull off, turn around and head back to the house, it suddenly chimed and put itself in park. As I coasted off the road, I could hear the parking pawl clicking and as soon as the car stopped, the engine shut off. I tried to start the engine again but as soon as the starter engages, all of the power goes off and the engine fails to move at all. I towed it back to the house and have not had a chance to try to turn the engine by hand with a wrench on the crank. My question is if the engine is seized, is it more cost effective to pull it and rebuild it or simply buy a reman long block and replace it. I should be noted that I have been chasing a drive train malfunction for a considerable period of time. I had tried about everything in the book to eliminate that issue other than replacing the turbo and doing the timing chain. I did have someone tell me that they thought there was a possibility that the chain was stretched and that the exhaust side valves could be slightly out of time causing a low boost issue. The only codes showing when it stopped are low boost and one about no input from exhaust cam. Any thoughts are appreciated as it is currently a yard ornament

[EL Jeffe 5]

I would rebuild it but again not sure how long ago you started to experience this issue.

[sccowboy]

The low boost started back in January. Chased it all summer with no luck clearing the 120308 code. The likely seized engine issue just happened. I have a friend that builds big block race engines and access to his shop and expertise but am not certain how much money is saved with rebuilding versus ordering a long block. If it were only a thousand or so difference or was rebuilding it significantly cheaper.

[StradaRedlands]

The dreaded N20 valve guide problem you think?
I don't know which of the two options would better. Depending on what happened, you may get away with a partial rebuild and redoing the timing chain and related bits.

[sccowboy]

Originally Posted by StradaRedlands

The dreaded N20 valve guide problem you think?
I don't know which of the two options would better. Depending on what happened, you may get away with a partial rebuild and redoing the timing chain and related bits.

Very well could be. My initial thoughts are that if I went with the long block option, I would save some time and not have to worry as much about future issues internally since I plan on keeping the car.

[StradaRedlands]

Originally Posted by sccowboy

Very well could be. My initial thoughts are that if I went with the long block option, I would save some time and not have to worry as much about future issues internally since I plan on keeping the car.

You're not wrong!

[StradaRedlands]

sccowboy Post #78 here: https://f30.bimmerpost.com/forums/sh...1415105&page=4

and #102: https://f30.bimmerpost.com/forums/sh...1415105&page=5

Probably worst case scenario