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This post is about rod knock and what I have done to temporarily fix it and what I plan as a permanent fix.
Vehicle 2000 Buick LeSabre 200k Miles l36 N/A
Recently replaced all gaskets on top end (valve cover, upper & lower intake, head gaskets) installed zzp front power log. The knocking started very soon afterwards.
There were also several other smaller slivers.
Here is the oil pan before and after cleaned.
Here is the pan after cleaning
Inspecting The Rods and Bearings
she runs good at the moment I'm just worried about the shim coming loose..
Here are some of the pics of the old bearings with 200k miles on em.
P.s I also cleaned up the caps.
Vehicle 2000 Buick LeSabre 200k Miles l36 N/A
Recently replaced all gaskets on top end (valve cover, upper & lower intake, head gaskets) installed zzp front power log. The knocking started very soon afterwards.
- Used Shadetree Stethoscope (long flat head) to pinpoint noise coming from bottom end.
- Dropped the oil pan and screw that stupid motor mount attached to the oil pan. (Make sure to have good sockets that can remove rounded bolts. I found this type to be the best
- Dropped oil pan and noticed metal slivers but after cleaning oil pan it looked like the pan itself could be flaking. Also the metal slivers kind of felt like something that was one step above tinfoil. Here are some pics.
There were also several other smaller slivers.
Here is the oil pan before and after cleaned.
Here is the pan after cleaning
- Checked Side to Side Play and any up and down play and all passed except cylinder 4 on up and down play.
- Cylinder 4 bearings were still in their caps so I don't think they spun however, both bearings had lost there locking tabs.
- Measured the journal for cylinder 4 and it is within specs however, even with new bearings it still had decent up and down play.
- Using Gageing Plastic I seemed to be getting around 32 about 6 outside of the top end spec of 25.
- I ended up using 400, 800, 1000, 1500 wet sandpaper soaked in tranny fluid to polish each journal and then polished each journal as all of the old bearings looked horrible. Pics of the old bearings at end of thread.
- Rechecked mmeasurements and it seemed I was still of by .04.
- Using a soda can I carefully cut to size a shim to install on the cap side and this brought me within spec. I plan on adding Lucas as an additional support for this temp fix.
- I have ordered new bolts for cylinder 4. all other journals, bearing clearance, and con rod caps measure within oem specs.
she runs good at the moment I'm just worried about the shim coming loose..
Here are some of the pics of the old bearings with 200k miles on em.
P.s I also cleaned up the caps.
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