Does anyone knows for sure that 1997. 520i e39 engine block can be
substituted by an older 1994. 520i e34 block? Issue is that e39 has Nikasil
treated engine bores and on the 5th cilinder it has a failure. I have a
chance of getting e34 520i block very cheap so I was wondering is it
possible to swap these two blocks?
Thanks in advance.
No unfortunately. There is very little in common between the older M50 and
later M52 engines. Even if you fitted a whole M50 engine, you'd still need
all the associated wiring and ECU etc. It's not really worth it. Try to find
a late '98-on M52 engine as a replacement as these didn't suffer the same
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.