Torque spec Quick reference
B21, B23, B200, B230, B234
Stock style torque to yield bolts (DO NOT RE-USE)
1. = 15ftlb
2. = 45ftlb
3. = Angle-tighten 90deg
1. Clean and inspect holes in block.
2. Thread bolts into block by hand
3. = 15ftlb
4. = 45ftlb
3. = 90ftlb ARP moly lube (or 120ftlb with 30wt oil)
Connecting Rod Bolts
1. = 14ftlb
2. = 90deg
ARP (Yoshifab connecting rods)
3/8" ARP 2000 or L19 bolts
ARP lube = 47ftlb or .0058" stretch
30w motor oil = 65ftlb
Torqueing to proper stretch is the most accurate way. You would need a Bolt Stretch Gauge such as the stretch gauge at the bottom.
Main bearing bolts
Main Bearing bolts 80ftlb
Cam/aux shaft gear
Crank damper bolt
1. Inspect bolt, if length does not exceed 55mm (2.185") it can be re-used.
2. = 45ftlb
3. = angle tighten 60deg
*TIP = Use a paint pen to mark the alignment of the dampner with the pully.
This way you will be able to see if the dampner has failed.
Tools we suggest
Nothing fancy just something reasonably accurate. Not going to list anything specific as you basically
get what you pay for.
I have built plenty of motors making 4x their original output with a harbor freight torque wrench.
Bolt stretch gauge
Paint pen (used to mark angle on bolt heads)