Quote:
Originally Posted by Dackelone
I have a Question for you guys.
1). Why does the tube on the right featuring the N55 motor say 306 to 326 PS (DIN.) ? In which BMW car/model does the N55 make 326 PS?
2). What is that lower pump for/do on the N55 motor? It's bellow the HPFP. The N54 motor (model) does not have this pump. ???
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That would be the oil pump.
The HPFP and oil pump are chain driven.
Looks like the left the chain and oil pump off the N54.
Also, the HPFP in the N55 shows a XXX943.
That's supposed to be the version that hasn't failed, but I think there has been a couple already.