Re: Light knocking 2300-2700 RPM '97 CS 5 speed - Saab 9000 Bulletin Board - Saabnet.com
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Update on the knock. Pulled the oil pan after a few hours (and a few choice words) and rotated the assembly with #1 at TDC. Pulled the caps from #1 and #4 and... the picture tells the story. The #4 bearing shells are on the left vs. the #1 on the right. Thankfully the journals so far look perfect - still polished and no heat marks or other scoring. Picked up a new set of Sealed Power bearings and will start rolling those in after checking the clearance with plastigage.
My theory is the #4 hit the right frequency vs. oil pressure leading to the knock sound, and the sound did seem to emanate from the back of the block vs. front where #1 would be.
I'll pull #2 & #3 this weekend and check but this looks like the root cause.
Posts in this Thread:
- Light knocking 2300-2700 RPM '97 CS 5 speed, Nixter , Fri, 1 Dec 2023 14:03:54
- Re: Light knocking 2300-2700 RPM '97 CS 5 speed, Nixter , Wed, 10 Jan 2024 10:10:271
- Re: Light knocking 2300-2700 RPM '97 CS 5 speed, Nixter , Thu, 21 Dec 2023 09:57:58 <-- Viewing This Message1
- Re: Light knocking 2300-2700 RPM '97 CS 5 speed, RandyNJ, Fri, 8 Dec 2023 17:48:29
- Re: Light knocking 2300-2700 RPM '97 CS 5 speed, Rociero , Wed, 6 Dec 2023 00:43:22
- Re: Light knocking 2300-2700 RPM '97 CS 5 speed, Goblin , Fri, 1 Dec 2023 19:01:11
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