Originally Posted by
Karlos G
Nice engine waiting to be built there!
I personally would sell the stud and nut kit separately as they are no use on a turbo charged CVH, many head gasket failures have been attributed to there inability to expand like normal stretch bolts do.
I agree the standard stretch bolts are the best choice for reasonable boost levels on a CVH (25 psi) They are designed as nearly fool proof.
The many head gasket failures with arp studs is not because of the studs inability to stretch. All fasteners stretch to achieve clamping force. Stretch bolts are stretched further (can't be re-used) which requires no re-torquing (after head gasket compresses over heat cycles). Failures occur when studs are not installed correctly and not re-torqued after a few heat cycles.