Re: [AMC-list] AMC factory engine balance

[adh@xxxxxxxxxxxxxxxxx (Sandwich Maker)]

" From: Frank Swygert <farna@xxxxxxx>
" 
" 
" I did a "minor balance" on the last 196 I built (didn't
" do it on my stroker though) but don't recall the differences in
" the weights of anything.  I had to remove very little from a few
" pieces to get them all within 2 grams -- just a few hits on the
" bench grinder for a couple rod ends as far as I recall.


" From: tom jennings <tomj@xxxxxxx>
" 
" 
" I static balanced all my rods, and all pistons+pins. 


guys -- when you do the rods, you -do- check big-end and small-end
weights separately, right?  big end weight adds unbalance at crank
speed but small end weight, like the piston, adds unbalance at double
crank speed b/c it stops and starts twice per revolution.

the way my friend with the engine shop does it is with stands with
ball-bearing pivots for the big and small ends.  one sits on the
electronic scale and is zeroed out with the autocal; the other sits at
the same level, so the rod is held -exactly- horizontal.
________________________________________________________________________
Andrew Hay                                  the genius nature
internet rambler                            is to see what all have seen
adh@xxxxxxxxxxxxxxxxx                       and think what none thought
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