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  #1  
Old 01-27-2015, 03:01 PM
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Ugh. Siezed engine(4.8)! Options?

Small oil leak turned into catastrophic failure on highway.
Not definitive yet (indy is looking at it), but likely motor is toast.

This is a 2007 X5 4.8 Sport.

Will a 650i or 750i 4.8 N62B48 short block work?
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  #2  
Old 01-27-2015, 03:14 PM
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Sad to hear that.The engines are pretty much the same,but there may be some slight differencies.Not on the block or head though.
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Old 01-27-2015, 03:22 PM
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There is a thread where someone did perform an engine swap into an X5 4.8is with a 4.8 motor from a different BMW. I believe the headers were different (among some other items) and new holes were required to be drilled. So it may not be a direct drop in replacement as you hope it will.
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Old 01-27-2015, 03:25 PM
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Quote:
Originally Posted by lanbrown View Post
There is a thread where someone did perform an engine swap into an X5 4.8is with a 4.8 motor from a different BMW. I believe the headers were different (among some other items) and new holes were required to be drilled. So it may not be a direct drop in replacement as you hope it will.
The thread is here:
4.8is to n62tu swap question
But that is for E53.E70 may be easier.When E53 was designed N62 didnt exist,so they probably dis some mods to fit it in.
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Old 01-27-2015, 03:42 PM
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Thanks for the info guys.
Looks like a 650/750 is an option (which is good - they are much more plentiful and thousands cheaper).
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Old 01-27-2015, 04:26 PM
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Quote:
Originally Posted by RPG951S View Post
Thanks for the info guys.
Looks like a 650/750 is an option (which is good - they are much more plentiful and thousands cheaper).
You will need the oil sump which is different due to the front axle.

Although I never bought an engine from them, these guys are reputable and do offer warranty: BMW Parts used and rebuilt bmw auto parts

And one last thing: it appears the power rating on the N62B48 of the X5 is different than the one used in the 750i. I'm unsure if it is different mechanical specs or is simply a different tune.
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Old 01-27-2015, 04:49 PM
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Quote:
Originally Posted by RPG951S View Post
Thanks for the info guys.
Looks like a 650/750 is an option (which is good - they are much more plentiful and thousands cheaper).
Make sure the cam shafts are the same. Sometimes trucks get a cam that is better for torque.

What failed on your engine? It is always good to know what to keep an eye on.
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Old 01-27-2015, 04:54 PM
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Quote:
Originally Posted by smassey321 View Post
Make sure the cam shafts are the same. Sometimes trucks get a cam that is better for torque.

What failed on your engine? It is always good to know what to keep an eye on.
BMW is using VANOS for more than 20 years now,which in it's modern iteration may emulate almost any camshaft timing and duration with just a change in the pulse width Plus N62 has valvetronic and variable intake length,which makes it PITA,but the most versatile engine of it's time.
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Old 01-27-2015, 04:56 PM
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Quote:
Originally Posted by smassey321 View Post
Make sure the cam shafts are the same. Sometimes trucks get a cam that is better for torque.
Good thinking.

I cross referenced the p/n for the cams and all (meaning X5 and 650/750) have the same cams both intake and exhaust.

The head, however has a different p/n: the head on the 650/750 have the same number while the X5 has it's own p/n.

Could be irrelevant, but it also may explain the difference in power rating.
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Old 01-27-2015, 05:02 PM
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Ahem, check the headers.
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