[b159]

Hi,

Sorry rookie question, but when I lookup N63B44T3 online it doesn't look like the same engine as in the 2020 G05 X5 M50i.

For example on this site:
https://www.bimmerworld.com/About-Us...ne-Variations/

Of course it's not the same as the S63 but viewed from the top the position of the intakes, etc look closer to the S63 in the link above.

[weinerbarn]

Originally Posted by b159

Hi,

Sorry rookie question, but when I lookup N63B44T3 online it doesn't look like the same engine as in the 2020 G05 X5 M50i.

For example on this site:
https://www.bimmerworld.com/About-Us...ne-Variations/

Of course it's not the same as the S63 but viewed from the top the position of the intakes, etc look closer to the S63 in the link above.

The layout is the same as what you're seeing in the S63 graphic. The engine cover is a little different though. It's almost a hybrid of the N63 and S63 as far as looks. I can upload a pic of my old engine bay if you want. Was from an X7 M50i but it's the same engine.

[b159]

Originally Posted by weinerbarn

The layout is the same as what you're seeing in the S63 graphic. The engine cover is a little different though. It's almost a hybrid of the N63 and S63 as far as looks. I can upload a pic of my old engine bay if you want. Was from an X7 M50i but it's the same engine.

Thanks for getting back. I've got a 2020 X5 M50i but just wanted to get some more detail on it, as even an engine out with full carbon clean and PCV replacement by the dealer has not fixed what they've been calling a "spark knock" for the last 2 years, and which came back a week later anyway.

For that 1 week of no knocking it had more torque off the mark and smoother transmission shifts. If it is carbon from the PCV I'm aware catch-cans may help, but it's not an official fix and would void what's left of the warranty.

It always occurs under low-mid load. eg, when going up a freeway entrance ramp such as this video I took back in 2022. Very clear with earphones and volume up:
https://youtube.com/shorts/ZAUbKjR61...mztT_tIkEoDmDN

Purchased CPO at 9,000 miles in early 2022, now 20,000 miles. Have 1 month left on the warranty so I'm pushing for an engine replacement. Did not think I would be going through this for 2 years after purchasing such a relatively new car...

Probably should start a new thread !