I got a couple questions. I ordered an engine tech rebuild kit for a 2001 5.9 l Cummins diesel. Question number one on the rod bearings half of them are shiny. The other half are dull color which one is the upper? and which one is the lower? The second question is on the top piston ring. It wasn't marked and looked identical on both sides Does this mean it could go either way?
i dont understand how the rings create air tight seal? they are all opened even though if you aligned them out of phase, gas pressure travels fast and should have no trouble following the end gap .
They do not create an "air tight seal". They allow a certain amount of leakage by design. The old style rings need to be gapped to allow thermal expansion or bad things happen such as damaged rings or breaking pistons. There will always be some amount of blow by on an engine no matter what. This is the purpose of a PCV system and it's important that it's functioning correctly. PCV Positive Crankcase Ventilation. Hope this helps!
I got a couple questions. I ordered an engine tech rebuild kit for a 2001 5.9 l Cummins diesel. Question number one on the rod bearings half of them are shiny. The other half are dull color which one is the upper? and which one is the lower? The second question is on the top piston ring. It wasn't marked and looked identical on both sides Does this mean it could go either way?
What’s piston end gap for Hypereutectic enginetech 5.3 vortec GM Engine
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And of course the end gaps need to be away from the thrust side and end gaps at 180 degrees from each other, including wipers.
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Are u sure? I was told by my machinist that they will automatically go into their place when installed and in use
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i dont understand how the rings create air tight seal? they are all opened even though if you aligned them out of phase, gas pressure travels fast and should have no trouble following the end gap .
They do not create an "air tight seal". They allow a certain amount of leakage by design. The old style rings need to be gapped to allow thermal expansion or bad things happen such as damaged rings or breaking pistons. There will always be some amount of blow by on an engine no matter what. This is the purpose of a PCV system and it's important that it's functioning correctly. PCV Positive Crankcase Ventilation. Hope this helps!
Rings expander plier
Hay