The ARP bolts can be torqued twice as much holding the block in place better for bearing clearance tolerance to stay consistent after line boring.
Quote:
Originally Posted by SoobCrazy
I don't know about the EG33 specifically, but common wisdom is that changing from head bolts to head studs is what really needs to be done (that and adding extra dowels between the case halves).
Aftermarket case bolts are a waste of money on Subaru engines, the OEM bolts never fail.
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