[F30StormTrooper]

F30 (2018 330i)

I have a blown motor at 22k after a "coolant low" light and 5 trips to the dealership. The mechanics could not identify a blown head gasket causing the coolant leak.

When life gives you lemons, make lemonade. I love this car; it has been in the garage for almost a year. I want to get this car back on the road with much more oomph behind it.

The current motor is the B46 - (super-ultra low emission vehicle (SULEV) version of the B48)

My original thought was if the block wasn't damaged, I could bore out the cylinders and replace the internals.

Since I will remove the motor anyway, I am considering swapping the B46 with a B58.

What other motors would you all recommend and why?

Does anyone have any insight on doing something like this in the past?

[0909905000]

Originally Posted by F30StormTrooper

F30 (2018 330i)

I have a blown motor at 22k after a "coolant low" light and 5 trips to the dealership. The mechanics could not identify a blown head gasket causing the coolant leak.

When life gives you lemons, make lemonade. I love this car; it has been in the garage for almost a year. I want to get this car back on the road with much more oomph behind it.

The current motor is the B46 - (super-ultra low emission vehicle (SULEV) version of the B48)

My original thought was if the block wasn't damaged, I could bore out the cylinders and replace the internals.

Since I will remove the motor anyway, I am considering swapping the B46 with a B58.

What other motors would you all recommend and why?

Does anyone have any insight on doing something like this in the past?

I see people successfully changing B48 to B58