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#21 |
Join Date: Mar 2024
Location: Northeast
Posts: 43
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Cut the filter open today. This is what I found. Some small silver particles. No gold ones like were in the oil drain pan.
https://youtube.com/shorts/kakxFT_zq...QastpxuNvXhddD |
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#22 |
Join Date: Mar 2024
Location: Northeast
Posts: 43
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Results are back from the blackstone oil analysis. They didn?t seem too concerned. It doesn?t seem like the bearings are wearing, but there is a lot of iron and aluminum. Could one of the lifters collapsing, which may have caused the an engine noise, resulted in a cam lobe or lifter itself getting beat up?
? Using a fuel additive before sampling can result in a low flashpoint, but not in this case. No water showed up either. Aluminum (pistons), iron and nickel (steel parts) are high compared to averages, which are based on a 2,400-mile run. Copper looks fine on a microscopic level, but if you find more visible metal next time then there might be an issue with brass/bronze parts - let us know if you find more metal next time. The slightly low viscosity isn't a concern. Check back in 1,000 miles to see how metals are trending? |
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#23 | |
![]() Join Date: Dec 2003
Location: Arcadia,OK
Posts: 3,384
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Jerry Downey JERRYS LT5 GASKETS & PARTS http://www.jerrysgaskets.com 1994 ZR-1, Black/Black, Lingenfelter Aerobody, 416cu in, 3.91 gears, coil-over susp, Brembo brakes, etc. 2016 Black-Red, 3LT-Z51 Auto 8-speed. |
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#24 |
Join Date: Mar 2024
Location: Northeast
Posts: 43
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#25 |
Join Date: Mar 2024
Location: Northeast
Posts: 43
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When changing the oil I noticed this part appears to be loose. It looks like the timing chain tensioner. See the video linked below. It also looks like the chain is rubbing on something. There are rub marks visible. Is this normal?
https://youtube.com/shorts/lVDWThbNe...VWj6Dx96yDdgfn |
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#26 |
![]() Join Date: Dec 2003
Location: Arcadia,OK
Posts: 3,384
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The video looks like the facing for the top chain guide (attached to the cam cover) has come loose, broken or detached. It is not a common thing but has happened before.
The Cam Cover has to come off & the wear strip attached. It snaps onto the guide. The Guide is simple, just a flat plate, about 1/8" thick, with notches on each end.
__________________
Jerry Downey JERRYS LT5 GASKETS & PARTS http://www.jerrysgaskets.com 1994 ZR-1, Black/Black, Lingenfelter Aerobody, 416cu in, 3.91 gears, coil-over susp, Brembo brakes, etc. 2016 Black-Red, 3LT-Z51 Auto 8-speed. |
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#27 | |
Join Date: Mar 2024
Location: Northeast
Posts: 43
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#28 | |
![]() Join Date: Dec 2003
Location: Arcadia,OK
Posts: 3,384
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Yes : https://www.jerrysgaskets.com/facing...new-90-95-1f4/ Plastic: Not much if the chain tensioner is working properly. I don't think so, as long as the guide facing is still in place. From the photo, looks like to be detached only on the end you are looking at and maybe laying down lightly on the chain. It is hard to tell from the picture. You can probably tell better looking at it with a good pen light.
__________________
Jerry Downey JERRYS LT5 GASKETS & PARTS http://www.jerrysgaskets.com 1994 ZR-1, Black/Black, Lingenfelter Aerobody, 416cu in, 3.91 gears, coil-over susp, Brembo brakes, etc. 2016 Black-Red, 3LT-Z51 Auto 8-speed. |
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#29 | |
Join Date: Mar 2024
Location: Northeast
Posts: 43
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#30 |
Join Date: Mar 2024
Location: Northeast
Posts: 43
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I was able to remove the passenger cover so far. The chain guide was still firmly in place. There was writing on the inside of the cam cover as shown in the photo. Is this factory, or has someone been in here before?
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