Recently my Big Bear has started labor knocking, so I figure it's time to re-build it, while I would consider a top-end rebuild, I think I wanna leave the bottom end rebuild to the professionals...Can anyone give me a rough price estimate on how much it would cost to have a shop rebuild the engine? Does anyone make a big-bore kit for a 2000 Big Bear? Thanks for any help

 

A complete four stroke rebuild can easily run upwards of 2 thousand dollars with parts and labor. A local Honda shop here charges $400 just for top-end labor...

The bottom end of an engine really isn't anymore involved than the top-end. It just requires a few more specialty tools like a clutch basket holder or impact gun and a flywheel puller. There's no real mystery to it. It's all roller bearings so that's easier than an car engine. The hardest part I would say with most 4 stroke bottom ends is the shift forks/drum/linkage, especially if it has reverse.

If you can work thru one bottom end the rest are ALL pretty much about the same. Go slow, label parts, heck video tape yourself taking it apart, get a shop manual, and save yourself a thousand dollars.

Most parts are either good or bad. There are specs listed in the books so you can measure everything out. Most worn parts look worn, most times it's not a judgement call, it's good or it's bad. If a bearing doesn't roll smooth replace it, if a shift fork has wear replace it, there's no voo-doo magic.