Originally Posted By: 440Magnum
The copper in Hemis (as in GM LSx engines) is pretty typical. They all do it, and it always trends down. Copper tends to leach into oil even from non-wearing surfaces in the oil flow path.
Everyone gets worried about copper because its the middle metal in tri-metal engine bearings. But as others have noted, before you even GET to the copper in tri-metal bearings, you have to have worn through all the babbitt (lead/zinc) overlay, and there's no lead at all showing. High copper with low lead is just never going to be a sign of a bearing issue.
And furthermore- I'm not even sure many modern engines even uses tri-metal bearings. Aluminum bearings were the norm in the 90s, and may still be.
I suspect you are correct about bearing materials in OEM.
Excellent results as always, these Hemis run nearly forever and do well on almost any oil. One heck of a sweet engine for sure.
And hey CT8, there's THREE displacements in new Gen Hemis!
The copper in Hemis (as in GM LSx engines) is pretty typical. They all do it, and it always trends down. Copper tends to leach into oil even from non-wearing surfaces in the oil flow path.
Everyone gets worried about copper because its the middle metal in tri-metal engine bearings. But as others have noted, before you even GET to the copper in tri-metal bearings, you have to have worn through all the babbitt (lead/zinc) overlay, and there's no lead at all showing. High copper with low lead is just never going to be a sign of a bearing issue.
And furthermore- I'm not even sure many modern engines even uses tri-metal bearings. Aluminum bearings were the norm in the 90s, and may still be.
I suspect you are correct about bearing materials in OEM.
Excellent results as always, these Hemis run nearly forever and do well on almost any oil. One heck of a sweet engine for sure.
And hey CT8, there's THREE displacements in new Gen Hemis!