3.0l Stroker
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M50B25:
bore: 84 mm
stroke: 75 mm
compression ratio: 10 , (M50TU : 10.5)
rod length: 135, (M50B25TU:140 mm)
M54B30:
bore: 84 mm
stroke: 89.6 mm
compression ratio: 10.2
rod length: 135 mm
You can build a M50 3.0l stroker motor by using:
- crank M54B30
- rods 135 mm
- pistonsM54B30 .
Maybe the crank case has to be modified to clear the higher stroke crank.
2.8l Stroker
---------------
for M50B25 engine
- crank M52B28
- rods M20B20/23 (130 mm)
- pistons M50B25 (non-Vanos)
or
- crank, from M52B28
- rods 135 mm
- pistons M52B28
or
- crank, from M52B28
- rods 135 mm
-pistons M50B25TU , pistons must be modified to decrease compression
rod lengths:
M50B25TU: 140 mm
M50B25: 135 mm (non VANOS engine)
M52B25: 135 mm
M52B28: 135 mm
M54B30: 135 mm
M20B20: 130 mm
M20B23: 130 mm
M20B25: 135 mm
M20B27: 130 mm
more infos here (german web page):
http://www.behindmatrix.com/e30/fotost/ ... f01140.htm
Tatt fra tråden min om tekniske linker.
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Norges rimeligste på CHIP til BMW:
http://www.bimmers.no/viewtopic.php?p=940379#940379