Off the top of my head I seem to remember the following as a few of the items to look for and set up
or adjust, I'm sure others will chime in with things I've forgotten. ...
1....clean and measure everything you can...a few simple tools and some "back yard " engineering
will go a long way. A magnetic dial indicator , some"plasti gauge" and a set of calipers as well
feeler gauges will do.
The dipper also acts as a locator for the bottom rod bearing. Before you disassemble check measurements
as you go. Remove lower rod bearing, check to see the dipper is not touching the crank throw. Reset the
dipper in the correct position, look for dirt and or sand then "plasti gauge" and record. That way as you
tear the rest the engine down you wil know what has to be worked or reworked and what is good. Do this
as you go and you will be surprised how easy it will go back together.
Measure crank "side play", rod "side play, wrist pin, "head squash", cylinder height........any thing you
would do as if it were the final assembly. ......record EVERYTHING.....
CLEAN, CLEAN, CLEAN.......I can't stress this enough. I used a needler scaler on everything I could.
Everyone seems to have their favorite method...do what works best for you.
READ, READ, READ........I read here many months before my first engine....there is a lot of ground to
cover to get a reliable and long lasting engine.
Check EVERYTHING as you go.......my 25/2 had the valve guides in the wrong location on 1 head.
Good luck and keep us informed as you go !
Doc