645CI Valve Oil Seal issues?

[localyokel]

I have heard of horrendous issues with the 645 V8 valve oil seals going at relatively low mileage. I am concerned to hear this as I have just bought my 2005 645CI with 66K on the clock - there is a genuine BMW full service history with the vehicle. It doesn't show any blue smoke on start up, idle or throttle blip, but can anyone advise me of anything else I should check?
1) How much typically would it cost to have the valve seals replaced? Through a good Indie?
2) Is it worth bothering with as the car won't be doing long journeys very frequently?

[Steven Rossman]

I just bought same vehicle model year etc. and have the same future concerns. The car has no symptoms and I am wondering how to be proactive regarding this potential issue. Do the valve seals fail in all these vehicles?

[White94RX]

Don't worry about the valve stem seals until it becomes an issue.

Oil consumption of more than 1 quart of oil in 1k miles, or smoking from the tailpipes after an extended idle, such as a long traffic light.

[bukzin]

[QUOTE=White94RX;29718085]Don't worry about the valve stem seals until it becomes an issue.

Oil consumption of more than 1 quart of oil in 1k miles, or smoking from the tailpipes after an extended idle, such as a long traffic light.[/QUOTE


Are there other issues to be concerned with beyond topping up the oil more frequently ?

What might be the approx cost to have a shop correct this?

Thanks!

[BMWEire]

I've seen some crazy prices for getting this done, but a number of posts I've read suggests you can get it done for around 2.5k at an indie shop. This guy is offering the service for that...

http://www.bimmerfest.com/forums/sho...970&highlight=