Rb30 Questions

[ArifSealey]

I just got a RB30 shipped from Australia for my Z project and had some questions about rebuilding the motor. I'll be using a RB26 head and from my research guys like RIPS use RB25 ARP studs. My question is what torque specs should we use on the head?

Also I wanted to confirm the following torque specs for the bottom end:

Main bearing cradle bolts - 16mm IIRC
54 nm

Connecting rod bearing cap nut - 10mm iirc
1st stage - 16 nm
2nd stage - 44 nm

[iruvyouskyrine]

3 even steps to 80ft/lb with ARP assembly lube.

[luke gtr]

I used the factory 26 head torque specs, as that's what it's going to have to hold.

As for the bottom end, if you're not familiar with engine rebuilds, I'd recommend getting an engine reconditioned to assemble.

Things to check are things like bearing crush, end float, ring gap, bore oval it, etc, etc.