Engine rebuild/HDI rod questions

[Dave]

Personally I wouldnt bother balancing the crank because its a massive ballache, just balance the piston and conrod assemblies themselves. Remove a shave of material off the bottom of the end caps to make the up and down movement of all 4 pistons exactly the same. I did this and lifting off at 5k doesn't put you through the windowscreen anymore. This is ofcourse if you're as pikey as me.