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6 Posts
HI All
I rebuilt my 1980 SD33T recently. I used a 3-ring piston kit obtained from Noordeman Diesel. The original pistons were the 5 ring pistons. I kept the original sleeves as they looked and measured good. A machinist checked them too and honed them.
So the engine runs good but was using a lot of oil. Way more oil than normal , not acceptable. I had issues in the first 500 to 750 miles with a blocked fuel flow so it never got up to speed until after I found the blockage . So maybe the rings never seated properly and this is causing the oil consumption. Also, I did not do a good job checking ring end gap, could have installed some with little or zero end gap. I am pulling the pistons now, one is out, the other 5 later today. I plan to clean them up, re-ring with new rings. Quick re-hone and reinstall pistons.
Here are some questions:
1. Has anybody here done a rebuild like this with the Noordeman or similar 3-ring piston kit? Any tips for piston / ring installation?
2. There is no suggested ring end gap in engine manual or piston ring kit. The RIK rings say to file to fit. I am guessing it should be about .013 to 0.014 inches. Any suggestions about this?
I rebuilt my 1980 SD33T recently. I used a 3-ring piston kit obtained from Noordeman Diesel. The original pistons were the 5 ring pistons. I kept the original sleeves as they looked and measured good. A machinist checked them too and honed them.
So the engine runs good but was using a lot of oil. Way more oil than normal , not acceptable. I had issues in the first 500 to 750 miles with a blocked fuel flow so it never got up to speed until after I found the blockage . So maybe the rings never seated properly and this is causing the oil consumption. Also, I did not do a good job checking ring end gap, could have installed some with little or zero end gap. I am pulling the pistons now, one is out, the other 5 later today. I plan to clean them up, re-ring with new rings. Quick re-hone and reinstall pistons.
Here are some questions:
1. Has anybody here done a rebuild like this with the Noordeman or similar 3-ring piston kit? Any tips for piston / ring installation?
2. There is no suggested ring end gap in engine manual or piston ring kit. The RIK rings say to file to fit. I am guessing it should be about .013 to 0.014 inches. Any suggestions about this?