Loud tappet like noises from Engine....
- Thread starter T1berious
- Start date
Excellent 
I can't quite see enough detail in the first piston picture, is that damage to the edge/ringland at the top right of the photo?
I can't quite see enough detail in the first piston picture, is that damage to the edge/ringland at the top right of the photo?
bmwaddict said:
Yup and I agree with all of the above. The problem is, your average driver / owner is mostly clueless about their cars. The very fact we're here defines us as enthusiasts. So we'll know someone or can be pointed at someone reputable who knows a great deal more than we do. Then again we're enthusiasts and comes as part and parcel of why we frequent forums, go to meets etc.
The bad news is those average owners or prospective owners wouldn't know a decent indie from a complete rip off merchant.
That's where a main dealer service history comes in, yup it might be worthless to some but when they take your key to a dealer, they get a warm fluffy glow from big bills and a sign of regular (costly) maintenance.
Funny story, my best mate (no, really he is!) got a 320D at around the same time we got our 330i, he barely drives it and literally 6 minutes into ownership decided to take it out of the main dealer for servicing etc (save a few bob etc) he's barely 80k in and now has all manner of issues and wants to get rid.
In contrast we always stuck main dealer (got preventative maintenance done plus regular servicing) a decade and 160k later we get our 1st break down. Alternator died, apart from that we have no issues with it but we are going to replace it.
If you know a great Indie than awesome! If not, in my experience, main dealer might be a bit more expensive but I've had no issues.
My only caveat is if you look at getting something a bit leggy, get it independently checked.
Lessons learned and all that. I'd highly recommend Autobahn if you need work done in the Midlands from an Indie.
Cheers
T1b
Gazc said:
Sheesh, that's some going!
Respect...
Mike
A lot of the follower failures seem to happen not long after an inspection 2 from what I have read, does anybody know what's the causes the the follower to wear away ,poor hardening, incorrect adjustment, lack of inspection to see how badly they are worn before shimming. There must be a maximum shim that can be fitted shortly before failure. Why only a couple seem to wear badly. If it was a bad batch of material then surely all of them would wear out equally. Thoughts?
r0bb0 said:
Maybe because the follower deteriorates so quickly once the case hardening has gone, that you’d need all follower coatings to fail at *exactly* the same time to see equal wear.
But you do hear of only one follower failing sometimes. I don’t know whether this means that just one follower started tapping or only the coating on one follower failed (or both). That would be inconsistent with bad batches, assuming that engines are fitted with followers with contiguous production dates.
MrPT said:
Generally bearings on a rotating shaft, or wear points like followers all wear at different rates due to oil flow, temperature and loads due to the shaft 'flexing' at high rotation speeds. I also think you are spot-on with the point about accelerated wear once the hardened surface is breached, once a wear point develops it will always catch. My guess is that as with crank bearings the same followers probably wear first on average engines. "The all do that sir, it's a wear-and-tear characteristic nothing we can do" ..... as the BMW warranty agent would say :wink:
In other news, she's going back this weekend for some exhaust heat shield welding action, wheel refurbs and dyno run.
In totally unrelated news, our long serving E92 330i is being replaced by a 440i on Thursday. 158k and a decade later she's being replaced.
I will shed a tear.
In totally unrelated news, our long serving E92 330i is being replaced by a 440i on Thursday. 158k and a decade later she's being replaced.
I will shed a tear.
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