What "bolt ons" bring an s52 to 300hp and what's the cost?

[The Dark Side of Will]

I'm not sure about diameter; but the S54 crankshaft is very similar to a 2JZGTE crankshaft; i had two torn down side by side. camshaft lobe spacing is almost identical also

s54 has M11 headbolts IIRC; they were weird.
rod bolts are also weird and got revised once.

The cam profile of the S54 is a porkchop; asymetrical. Is this due to the fingering valvetrain setup?

Asymmetrical is due to finger-follower asymmetry (like the M20, the opening arm ratio is different than the closing)

What do you mean by similar to 2JZ?

A whole lot of MFG's use M11 head bolts nowadays.

[digger]

S54 rod bearing is 49mm - they are wider
S52 rod bearing is 45mm - same as any m50

I'm not sure about diameter; but the S54 crankshaft is very similar

that is not width, 45/49mm is the diameter

according to ACL website

S54 rod bearing width/length is 16mm-49mm diam http://www.aclperformance.com.au/ACL...EngineBRgs.htm

S52 rod bearing width/length is 18mm- 45mm dia http://www.aclperformance.com.au/us/...bearingsus.htm

S50B32 rod bearing width is 18mm-49mm dia

http://www.aclperformance.com.au/ACLRaceSeries-BMWS50B32PerformanceEngineBearings.htm

S50B30euro rod bearing width is 18mm-49mm

http://www.aclperformance.com.au/ACLRaceSeries-BMWS50B303.0LPerformanceEngineBearings.htm

the Molnar rod page also suggest the bigend of the rod on the S54 is indeed smaller

http://www.molnartechnologies.com/molnar-rods-sp.html

seems like a pretty stupid move by BMW to reduce the width compaed to the S50B32 and S50b30/euro (neither of which are kind to bearings to start with) when turning more revs.