Subject: I would do them, and here is why Author: bsnedeker : member since March, 2007 : 750 posts Posted on: 2008-08-03 03:06:37

I took mine off at 138K miles and those gaskets...just like my valve cover gaskets, were as hard as a rock. They literally cracked apart when I removed them...and mine weren't even leaking yet. As long as you are removing the valve covers, it's probably an extra hour to remove the upper timing covers and pop new gaskets on.

Just make sure that when you replace the gaskets you follow the TIS instructions...i.e. put a dab of RTV in the corner where the upper and lower timing covers meet the engine, and you use the valve covers to press the upper timing covers into position. This is important! I had to do mine twice because I neglected this step.

• How common are oil leaks from timing chain covers? - 01sport 2008-08-01 16:05:01 (33 views)
  • Re: How common are oil leaks from timing chain covers? - 01sport 2008-08-06 15:29:15 (7 views)
    • NE1 have the TIS on upper timing chain gasket ? (nt) - 01sport 2008-08-06 15:30:41 (10 views)
  • +1 I did the timing chain when I did the V.C. / V.P. on my 98 740i (nt) - Lexicon 740iL 2008-08-03 12:37:12 (11 views)
    • The chain? Or the upper or lower chain cover gaskets? or the tensioners/guides? - JohnG 2008-08-03 13:03:29 (14 views)
      • When My indy (German Tech) installed my new Alty he suggested - snitch 2008-08-03 14:08:10 (16 views)
        • There isn't any tightening or aligning other than replacing the guides and tensi - JohnG 2008-08-03 14:48:26 (10 views)
          • thnx for the follow up reply. ill keep the gaskets in mond then,.How expensive - snitch740i 2008-08-03 15:12:51 (9 views)
            • not sure - as with many repairs, the labor is the $$$ part - JohnG 2008-08-03 15:34:50 (12 views)
      • Sorry, I should have specified,The upper or lower chain cover gaskets. (nt) - Lexicon 740iL 2008-08-03 13:25:37 (9 views)
  • I would do them, and here is why - bsnedeker 2008-08-03 03:06:37 (25 views)
  • just did mine too.. (nt) - paprmkr 2008-08-02 13:42:06 (9 views)
  • I guess almost common! I am having a leak now and it seem to be that. DON'T - bmw635 2008-08-01 18:46:12 (23 views)
    • I don't think the timing chain guides or tensioners are an issue - JohnG 2008-08-02 16:10:57 (20 views)
      • 6 bolts, 15min, $100 extra parts- I wouldn't skip this on the M62 engine. (url) - bmw635 2008-08-02 19:25:52 (30 views)
        • +1 (nt) - thesteve 2008-08-06 09:37:25 (4 views)
        • Close, but it's more than 15 minutes and closer to 150 in parts - bsnedeker 2008-08-03 02:57:16 (30 views)
          • What were your symptoms of the timing guide failing? Noise? - justible 2008-08-03 17:00:00 (20 views)
          • Appreciate the info. But I will definitely skip it this time around - 98K miles - JohnG 2008-08-03 10:44:44 (11 views)
      • 6 bolts, 15min, $100 extra parts- I wouldn't skip this on the M62 engine. - bmw635 2008-08-02 19:25:28 (18 views)
  • Re: How common are oil leaks from timing chain covers? - cogic740 2008-08-01 17:02:37 (22 views)