Originally Posted by
steveboyslim
Torsional rigidity and overall strength, aluminium is weaker than cast iron.
Hypothetically, if the alloy block was cast using the original cast iron mould, would it not be weaker ?
I know the have introduced more metal to the stud areas but the block wall thickness is less.
When Ford and Harts did the BDT and BDT/E four bolt main caps were used and much more metal was introduced to strengthen the block in the main bearing area and a dry deck format was used to improve the rigidity of the deck face.
Steve
Alu is also a great deal stiffer than cast iron....it wouldnt flex as much.
Be interesting to see some figures to back up your suspicicions........and some proof they just used the old mould????????