Cylinder Block
Cylinder Block
Cylinder Bore
Standard (A)
B204 90.000-90.012 mm
B235R 90.000-90.020 mm
Standard (B)
B204 90.003-90.020 mm
B235R 90.020-90.040 mm
Standard (B+)
B204 90.011-90.030 mm
B235R No specification given
First Oversize
B204 90.500-90.512 mm
B235R 90.500-90.520 mm
Second Oversize
B204 91.000-91.012 mm
B235R 91.00-90.020 mm
Cylinder Head
Height, New Cylinder Head* 139.4-139.6 mm
Height, Minimum After Regrinding* 139.0 mm
*Applies to both B204 and B235R engines