N62B48 Replacement Engines...

[MBellRacing]

Hey all,

I did a quick search, but as is common, the clutter makes it very hard to get a simple answer.

I am looking to rebuild an N62B48 for my 2006 4.8iS and there seems to be a dramatic difference in price between the 750i 4.8L (still advertised as an N62B48) and the one in the 2004-2006 X5. Is there a mechanical difference? Could it be a bolt pattern or spacing thing for use of AWD?

Thanks in advance, hopefully this is an easy topic to close!

[EODguy]

As far as I know all remaining N62 4.8iS engines used in the e53's were bought by Morgan motors in the UK leaving the newer engines as the only available. I don't know about the bolt patterns but I believe the smog reduction systems don't mate up.

Sent from my SM-A730F using Tapatalk

[andrewwynn]

I'm about to make your year:

https://xoutpost.com/bmw-sav-forums/...n-x5-750i.html

Somebody recently put a 750 motor into an X5 and detailed all the differences and how to overcome the issues related.

The best part is it was even 4.8 variety

[MBellRacing]

"Don't match up" as in: I cannot swap parts across engines?



My ticker has already had its valve seals done and STILL smokes. I'm about to do the scotchbrite trick to get it to pass inspection. I would love another engine and transmission rebuilt and ready to swap in because I think these SUVs are amazing with their engines being the sole major issue. I feel like a rebuilt and improved N62 swapped in would dramatically increase the value of this thing as, everywhere else, my car is in great shape.



So, is there anything I can do to swap in the readily-available N62B48's from 750 and 550 BMWs?

[MBellRacing]

Originally Posted by andrewwynn

I'm about to make your year:

https://xoutpost.com/bmw-sav-forums/...n-x5-750i.html

Somebody recently put a 750 motor into an X5 and detailed all the differences and how to overcome the issues related.

The best part is it was even 4.8 variety

I-- I don't know how to say this... but I love you.

[andrewwynn]

Told you: "make your year". That thread is four months old. The hard part was to find the post: xo search engine is horrible.

Fortunately duck to the rescue:.

xoutpost 750 engine swap x5

That was my search string found the thread top result.

Lucky for you I usually read all new threads in e70 and e53 forum so I saw that thread and remembered it.

So you just need to follow the cookbook I think you are well on your way to getting a much newer engine into that 4.8 and reset the clock and add many years.

I am very big on repair vs. replace so I'm very much behind your project.

[EODguy]

Awesome. I was under the impression that it wouldn't mate up in the e53 because the emission crap was set up for the e70.

Sent from my SM-A730F using Tapatalk

[andrewwynn]

A good amount of things needed reworking but nothing insurmountable.

Reminds me of when I put a 7 series SAP into my wife's e53 because they are far easier to find at a junk yard.

[nick325xit 5spd]

When looking at the work required to make a later N62 4.8 work in the X5, I can't help but wonder if it would be easier to put N62B44 heads on an N62B48 block.

Some further info:
https://www.bimmerforums.com/forum/s...-swap-question

Basically, you need an intake X5 N62 donor to make this work. Whether your current one is usable, or you buy a 4.4 to combine.