Quote:
Originally Posted by diyanich
Hi there,
I read a thread about the 4.6 block and 4.4 heads on an e39.
As far as I understand it reboring a 4.4 would remove a sleeve coating.
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Yes, I will need to resleeve after boring. However I read that the 4.6 has a larger bore plus also longer stroke, thus not sure it it will work. Also, the 4.4 block I have currently located is not from an X5 but from a 540, thus some mounting points seems different. Maybe I need to find a 4.4 from an X4 for comparison?