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Need advice on whether to replace lifters and/or front valve cover. Doing the HBs on my new-to-me all-original(other than rear shocks) '10 C63 w/96k miles. There's about a second of start-up chatter(that I hope an adjuster pin-flip solves) and a bit of ticking after warm-up that appears to come from maybe injectors(loudest at intake when scoped), otherwise the top-end is pretty quiet. When doing a fingernail test, the lifters (on DS thus far) all appear smooth except the one pictured that has a hint of glare from an angle (center circle) but the feel is very subtle and that cam lobe is one of the cleanest - all lobes appear fairly clean to this novices eye. If I was 100% certain this was a keeper (won't know until I push-it -won't push it until I replace the HBs) wouldn't be asking this question(it, amongst a few other things would be done) but looking to keep it budget until then. If a keeper(and it probably is) doubt it would see more than 3K miles of semi-aggressive DD per year and I'm good revisiting the lifters as well as the cams a few years from now. If those more familiar with this than me (my 1st) feel replacing here is a no brainer, my cheap-a$$ could use the push.
The front valve cover is something I haven't seen discussed here and I had no intention of addressing until I saw it mentioned in one of Tasos videos - the 3 ring grooves pictured are both visibly obvious as well as easily felt via fingernail - I would think this normal for most (if not all) cars with this many miles but don't here about it being replaced - thoughts?
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.
