10-11-2013, 03:35 PM
Yes - its Double VANOS, so both the intake and exhaust cam are variable. Yes, you probably need to worry about it, assuming it hasn't already been repaired. You will know immediately because it will sound like marbles in a can on startup/shutdown, and the power delivery will be uneven, it usually has a pronouced step up around 4k. I had a double-VANOS 325i that had no signs of issues at 90k so this car might be fine. I didn't rebuild the M3's until 175k+.
Assuming it did need the repair, you would want order the Double Seal and Double Rattle repair kits for a total of $120. I have the vise-grip liners and modified socket lying around somewhere. You also need cam locks and the flywheel lock but someone around here has those, I know because I borrowed them. You also need a timing chain tensioner lock, but I used a small allen key.
http://www.beisansystems.com/products.html
However, in my personal experience, that was one of the few projects I actually really enjoyed doing. It takes a while, I'd budget 5-6 hours, but the Besian DIY is incredibly thorough (under the procedures link) just print it out and follow the directions. When you take it all apart you really understand how that clever little system works to change the valve timing as the RPMs increase. (I mean its not that clever, since they all fail, but still)
Assuming it did need the repair, you would want order the Double Seal and Double Rattle repair kits for a total of $120. I have the vise-grip liners and modified socket lying around somewhere. You also need cam locks and the flywheel lock but someone around here has those, I know because I borrowed them. You also need a timing chain tensioner lock, but I used a small allen key.
http://www.beisansystems.com/products.html
However, in my personal experience, that was one of the few projects I actually really enjoyed doing. It takes a while, I'd budget 5-6 hours, but the Besian DIY is incredibly thorough (under the procedures link) just print it out and follow the directions. When you take it all apart you really understand how that clever little system works to change the valve timing as the RPMs increase. (I mean its not that clever, since they all fail, but still)
Now: 07 Porsche Cayman S | 18 VW Tiguan
Then: 18 VW GTI Autobahn | 95 BMW M3 | 15 VW GTI SE | 12 Kia Optima SX | 2009 VW GTI | 00 BMW 540i Sport | 90 Mazda Miata | 94 Yamaha FZR600R | 1993 Suzuki GS500E | 2003 BMW 325i | 95 Saab 900S