PRP 1/2 Inch Head and OEM Head Dowels - Nissan RB xmas25 ARP Recommend pulling a bolt

ARP Recommend pulling a bolt to 75% of a yield in which case an ARP 2000 is around 110 foot pound in an M12 bolt which is fine but the 625 pulls 140 foot pound at 75% of yield and because you’re not tensioning the bolt to 140 foot pound both bolts perform exactly the sameIn this application spending the extra thousand dollars on the 625 bolts is a complete and utter waste of money and there is zero benefit

Wastegate provision to suit BOTH 45mm and 44mm Turbosmart

OEM Main Cap Overlay Cradle 2WD (PREC26P-2WD)

Based on the IGN1A smart coils found on Mercury boat engines

PRP 1/2 Inch Head and OEM Head Dowels - Nissan RB xmas25 ARP Recommend pulling a bolt1 2 inch head dowels Anyone fitting half inch head studs to an RB (should be all rb25 and 30 blocks) They suit OEM replacement also. Need these! We have recently discovered that many people dont use dowels when converting to 1 2 inch head studs, they are absolutely crucial to stop the head from walking around and hurting your gasket seal! The reason you cant run an RB26 type M12 12 mm Stud in an RB20, 25, or 30 is because they are originally 11mm