Quote:
Originally Posted by Ian///M
+1
I have had both.
If you want to tune and add lots of power mods then N54 is a better way to go. It is stronger and more tunable.
The N55 is a more modern engine with better technology, yet more complicated.
Depends what you want to use the car for?
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a lot of how well a motor holds up to higher HP and TQ is about tuning... you can blow up either motor or make one fail jsut with bad tunning,... proper air flow fuel delivery and all the extra tuning stuff that goes along with it... that said... in my opinion they will reach about the same level of power before failure...
and ive seen where the n54 has Mahle pistons and forged rods i think, ..i could be wrong.... but i havnt seen anything from BMW that says the N55 internals arnt forged of up to par.
could you post that please.
and one last thing....under the engine cover there is another little black plastic cover that sits on the valve cover and it reads MAHLE.....
i dont know , i would like to see the info that i keep hearing about N55's
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