The N52 block is about an inch longer but that includes the timing cover so it's not a 1:1 comparison.



all I need is a front diff and I can start cutting. I also need to find somebody who can weld it back together..
also, the design of the N52 with the lower main caps being part of this whole assembly means it's really stiff. the stock N52 redline is 7k (compared to an M54 that will shake itself to pieces above 6k realistically). I'm thinking a 10% increase would be realatively feasible, to 7700rpm. Also, MSV70 was actually designed to run without a MAF - but they left it in for emissions reasons, basically. I intend to run it without a MAF as it was originally designed (it uses widebands and an advanced model to run the engine instead). I'll probably start with the 3 stage manifold and work on my own manifold in the future, with a CF airbox. Having no throttles makes things a lot easier...
The head design is also similar to the S54 (same finger/lifter design, but with hydraulics instead of shims and of course VVL). It has smaller ports, valves, and a less aggressive cam, so it's not going to make power at 8500rpm, but there's definitely a lot of potential. Similar to the S54, the intake ports are CNC'd from the factory. I'm looking for about 300bhp, and considering I put down 232whp on a cold day basically stock in my 330i, I think that is achievable with headers, cams, and tuning.
Leave a comment: