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Old 02-09-2024, 09:53 PM   #8
cmitchell17

 
Drives: 17 2SS, 8L90, Cam, Heads, E85
Join Date: Dec 2016
Location: US
Posts: 1,213
Quote:
Originally Posted by Judy1le View Post
Understood. Im running the rotofab dry with my Katech 427. When reading, it looks like the dry filter has a smaller micron size compared to the oiled rotofab, but it does look like the OEM style filter has a thicker filter material and of course there is all of the pleating.

Id imagine we are making a mountain out of a mole hill though. Nobody likes to see the higher silicon content, but I figured itd would be many many many miles before you see any adverse effects and it looks like you and I both are the type to keep up with maintenance like clockwork.
Yeah, I think so too, but actually just today I noticed the dreaded cam lobe/bad lifter squeak/chirp noise. I probed around it with a stethoscope and its definitely not a squeaking belt or anything else and is definitely coming from inside the valve cover and/or engine block. So maybe, hopefully, I just broke a valve spring, but I think it could be camshaft/lifter related since I can still hear the noise more near the valley cover.

So it's time to pull the engine and tear it down. Although I have really been wanting to sell the car I just don't think anyone would be interested in buying it, and definitely not with the noise. So I can't decide if I want to try a different cam and go back to LS7 style lifters in hopes that I can get an engine that doesn't sound like a sewing machine, or maybe I should just go back to stock cam without AFM so I could sell it.

Last edited by cmitchell17; 02-09-2024 at 10:49 PM.
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