A shout out for DrVanos...

[David.X5]

Many tales of woe here, so I thought I would post a story with a happy ending.

Three (maybe four) years ago, I did the whole Beisian VANOS repair thing. Replaced everything, chains, tensioners, guides, the seals inside the VANOS, etc., but my startup rattle never really went away. Definitely better, but not gone. I later changed both the vanos solenoids and solenoid check valves (second set) and that didn't help anything.

So, years go by and I am frustrated enough to go at it again. I decide this time to get expertly rebuilt VANOS from DrVanos. Go through the whole tear down, replace the VANOS, and voila... all the noise is gone. No startup rattle and less noise when running. I did replace the main chain tensioner again just because, but did not replace the guides or chains as I did them first time (around 130000 miles, I'm now around 155000).

And, the weirdest thing -- my transmission is shifting way smoother. I think it must try to adjust the timing as part of the shift algorithm, and the rebuilt VANOS are responding correctly.

Took me exactly 6 days to do the whole tear down and re-assemble, working on it 3-4 hours after dinner each day.

And, to be clear, I have no relationship to the company.

[X53Jay4.8is]

Originally Posted by David.X5

Many tales of woe here, so I thought I would post a story with a happy ending.

Three (maybe four) years ago, I did the whole Beisian VANOS repair thing. Replaced everything, chains, tensioners, guides, the seals inside the VANOS, etc., but my startup rattle never really went away. Definitely better, but not gone. I later changed both the vanos solenoids and solenoid check valves (second set) and that didn't help anything.

So, years go by and I am frustrated enough to go at it again. I decide this time to get expertly rebuilt VANOS from DrVanos. Go through the whole tear down, replace the VANOS, and voila... all the noise is gone. No startup rattle and less noise when running. I did replace the main chain tensioner again just because, but did not replace the guides or chains as I did them first time (around 130000 miles, I'm now around 155000).

And, the weirdest thing -- my transmission is shifting way smoother. I think it must try to adjust the timing as part of the shift algorithm, and the rebuilt VANOS are responding correctly.

Took me exactly 6 days to do the whole tear down and re-assemble, working on it 3-4 hours after dinner each day.

And, to be clear, I have no relationship to the company.

Excellent and job well done. I to have done the besian route and have never had vanos rattle return. I have done 4 M62 engines and have had great success with each. Dr. Vanos has his rebuild method down to a science that in the future if I were to ever acquire another M62 engine equipped BMW I would probably try his service out. It does save time and appears to be reasonable. I am like you in that VANOS rattle drives me crazy.

[white46]

Wondering, did you change vanos distribution piece for bank 1 and 2 as well?

[David.X5]

I did replace the two distribution pieces. Definitely this time (with new cam sealing rings and metal gasket). I thought I had not done it the first time, but when I opened it up, it appeared pretty new. Since I had already ordered new ones I went ahead and changed them.