Fonte:
http://forums.bimmerforums.com/forum/showthread.php?1426005-E36M3-engine-varieties-US-S52-Euro-S50B30-amp-S50B32US M3 engines (240 hp)Conrod bearing size 45mm
Two setting Vanos. (nl or advance, not variable)
Headers of suboptimal design
Hydraulic self adjusting valves
WP is of questionable quality
No oil cooler provision (First M engine to lack this)
Single TB. (May favor torque, but certainly not HP)
S50B30 (286 hp) M3 EuroMax HP 286 at 5900 rpm
Max Torque 235 at 3600 rpm
Redline 7200 rpm
Conrod bearings are 50mm
Forged Rods
Intake vanos is continuously variable (30 deg?) each direction
Headers are equal length, preserve torque (no O2 bungs)
Bucket/Shim set up for valves, needs interval maintenance
Excellent wp and thermostat set up
Oil filter manifold provides thermostat and oil cooler
Insulating ceramic spacers between header and cylinderhead
Motronic dme and separate vanos controller, both “chippable”
6 TB set up
Late versions include EWS II
Catalytic had O2 bungs pre-cat only.
S50B32 (321 hp) M3 E36 EvoMax HP 321 at 7400 rpm
Max Torque 236 at 3600 rpm
Redline 7600 rpm
Conrod bearings are 49mm
Sintered rods after 10.96 (I think)
Intake and Exhaust cams continuously variable
Headers improve slightly on 3.0 weight and thickness, include O2 bungs
Dual pickup oil pan
Compression bump from 3.0 version
Ceramic spacers no longer included
Siemens DME flash only, Vanos controller incorporated into main DME
MZ3/Coupe versions may have EWS III