Let me preface by saying I know that I made a mistake by not marking my pistons to indicate the original direction. I did number the rods and caps. (3.625 BORE, 2.25 MAINS, 2.25 RODS) I removed my pistons on a Waukesha 155 a few weeks ago, did all the engine work and when I was ready to reassemble, there were no piston marks to indicate forward. Nothing on the piston heads, rods, etc. On all of the rods there is a part number on one side and a "DX" on the other. When I put the first piston (No. 3) in, it would not go in with the "DX" forward as I thought that might indicate. It would hit one of the crank weights going in. So I flipped it.
I installed (No. 2) next and the same thing happened. It SEEMS like the pistons are slightly biased to prevent them from going in wrong. IS THIS TRUE? Am I just screwing this up or is that the case?
I have all the pistons back in, in what seems the right locations, engine turns nice, no binding, no scratching, etc. ANY FEEDBACK WOULD BE GREAT!!! I am a high school shop teacher and my students always want to keep moving. I am hesitant to remove from the engine stand and reinstall before I get a good answer. PLEASE ADVISE.
I installed (No. 2) next and the same thing happened. It SEEMS like the pistons are slightly biased to prevent them from going in wrong. IS THIS TRUE? Am I just screwing this up or is that the case?
I have all the pistons back in, in what seems the right locations, engine turns nice, no binding, no scratching, etc. ANY FEEDBACK WOULD BE GREAT!!! I am a high school shop teacher and my students always want to keep moving. I am hesitant to remove from the engine stand and reinstall before I get a good answer. PLEASE ADVISE.