I am wanting to learn more about blueprinting and balancing an engine, and would appreciate any information, links/sites, mathematical formulas, etc.

 

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The term Balanceing in referance to engines is wheen all the reciprocating parts of the engine are of the same weight. (ie. all four pistons wiegh the same amount) during manufacture especially of castings and even some forgings things vary from part to part. Making all the pieces wiegh the same allows for eisier reving and reduced stress. Blueprinting acheives then same thing by correcting manufacturing flaws. All engines are designed with the bores sqaure and in line with(and at the proper angle on V engines) crank. However due to small variances in maufacturing these dimensions are margionally off (how much is allowable is up to each manufacturer). In hondas case they are usually pretty good from the factory. I have done some early 70 detroit iron that was scarry. But when building a motor it is always adviseable to due both. If you need to remove material for balanceing always remove it from the underside of a piston and the meatiest side of your rods. I also like to balance rod caps separately but that is just me. I think its always best to have your crank spun balanced by a pro. These are just my sugestions always get a few opions before spending your own money. Good luck

 

also making sure all bearing sizes and tolarances are within factory spec. This is also rare in newer motors but sometimes older engines cam with sloppy tolorances that led to motor life of less than 100k. Seems like a long time since you scraped a car at 100k.But not that common 20 years ago.