About connecting rods/caps

From: J. Lee (milveh@sbcglobal.net)
Date: Sun Sep 22 2002 - 23:23:35 PDT


Ok, my dumb question of the week......why do mfgs say connecting rod end
caps must only fit one way on the connecting rod?

The inside of the connecting rod is suppose to form a perfect circle, right?
Now if the connecting rod cap is equal to 1/2 of the round bearing surface
that wraps around the crank journal then obviously its one half a (near)
perfect circle. Why in the world would it make any difference to have the
c. rod end cap face one direction or the other as long as the oil holes are
aligned from the top of the c. rod. It forms a complete circle. What am I
missing?

Is it something about balance perhaps?

Thanks,

Jack



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