Originally Posted by baseballdbk1
After tearing it apart we found a few problems with the block:
1. The block mains were stretched out .005"
2. The connecting rod bushing were extruding from the rod
3. The wrist pins were slightly bent
After finding this out, we took the following steps:
1. Machined the block halves and line main hone with upgraded ARP case bolts
2. Install new main bearings w/ clearances ranging between .0026 & .0028'
3. Install new rod bearings w/ clearances ranging between .0023 & .0024"
4. Honed connecting rods & installed new "classified" high quality bronze connecting rod bushings
5. Installed new CP piston ring set
6. Installed upgraded CP "Tool Steel" wrist pins(These are not the same type of wrist pins that came with my pistons)
7. Fresh cylinder hone using torque plate and ARP L19 head studs
8. Fully balanced rotating assembly
Wow, so the wrist pins were bent?! Is that due to an engine overrev or from too much torque? Generally speaking, at what torque level does your engine builder recommend upgraded wrist pins?