I know of a 120K mile CRV that needed a timing set, and everyone always says the newer engines last longer than the older 60's models did?
Did they use RTV or anaerobic?
We do tons of gen 1/gen 2 TSI’s for upper reseals/chains and it’s not abnormal to see cam wear, especially on cars going 10k+ OCIs, it’s funny though cause the valve trains are always spotless. The cam covers don’t seem to leak that often on the gen 3s so it’s just timing chain/timing cover replacement/reseal so I can’t comment on a ton on the wear on those particular engines.
Yes much better design. People back then hardly ever changed oil. Kinda like some now.
Looks like all use RTV.
No, anaerobic was the original sealant then it was revised to RTV.
That’s RTV.
What happens if some RTV comes off in the engine?
Forget the change to RTV with these engines. RTV is the worst thing you could think of using, it not only causes big problems if any gets into the head and subsequently into the pan but it also increase cam bearing clearance slightly. The VW/Audi green anaerobic is not that great either. EL-LIQ 74 is well proven for safely sealing the cam girdle. There is no cam bridge screen on this engine, I would suspect RTV damage.
Potential disaster! Use RTV only on the oil pan, rear seal housing and front timing cover and apply it very carefully 2-3mm bead only.
Interesting to read. Makes sense that it would increase clearance. Just pulled my head apart, it was sealed with a very thin bead of RTV and there is scoring on the intake cam I can feel with my nail, so I'm replacing it (with a freshly rebuilt head). Maybe that's related, maybe not, but the plan was to use anaerobic this time anyway.
Not sure if I agree with that. There have been many revisions to the EA888. Your advice may be accurate on the early ones, but the later models are designed to be sealed with RTV.
Shafts are a bit simpler nowadays (at least gen3), the oil pump has a screen on the bottom AND on the top, and yep, 1 per cam on the spool valves. I don't remember any others besides the vac pump (have torn apart and rebuilt the whole thing).
I've also heard rumors that the Mk7.5 Gen3 motors come with RTV but the oem sealant that comes up in ELSA/partslink for my 2019 VIN is anaerobic. There was a rumor floating around that the part was superceded by RTV but that's not true as far as I know from parts databases and dealer techs.
There is no reason to use RTV on the girdle on the early or late engines. RTV has been the root cause of so many problems with these and other engines. I genuinely hate that crap and only use it when absolutely necessary.
