How hard is it and what special tools do you need to remove the crankshaft and reinstall it once a new rod has been put on?

 

Get yourself some 8" long 8mm bolts. Get a puller with grooves opposite each other for the bolts to line up with the holes in the case. Thread the bolts into the case and use the puller to push the crank out of the case. Getting the crank back in isn't as easy and buying a crank installer would be best. I'm not going to tell you how I installed the one and only crank and the one I'm getting ready to put in my Blue Raptor. It works but it's not the right way. Finding a crank installing tool is harder though.