by Karl von Salzen
The 5 flywheel bolts on a type IV bus
engine have always been hex head.
#24 here, are the 5 HEX head bolts for the
flywheel:
Look at the bolts that hold the pressure
plate [clutch cover] to the flywheel: #3 here, are the 1.7[210mm]
and 2.0[228mm] 13mm headed 8x1.25 clutch cover bolts. #30 is the
torx 7mm 1.8[215] clutch cover bolts:
8mm with a 13mm head = 210mm flywheel
7mm with a triple-square head = 215mm
flywheel