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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 06-17-2010, 09:07 AM   #1
RalphLikeAMofo
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Vanos: Dr. Vanos full unit vs. the Beisan rebuild parts

Hello all,

Anyone that's rebuild or replaced their M54 dual vanos, I am wondering if it's a wash of cost vs. aggravation to actually open up the unit and replace seals/bearings through Beisan ($120 for bearings and o-rings, plus teflon seals, vc gaskets and bolt grommets for another $60, so a minimum of $180 plus time and labor) or get the Dr. Vanos rebuilt unit for $250.

How much time and effort is involved in actually rebuilding your own core, and did you find it to be worth the $70 you saved?

Any input greatly appreciated.
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Old 06-17-2010, 09:25 AM   #2
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You'll save more than that. You don't need to install the bearings (unless you're installing ZHP or Schrick cams). The teflon seals are quite simple to do. It's an easy DIY and you get to take junk apart. Fun times!
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Old 06-17-2010, 09:30 AM   #3
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I think the cost is closer to about $120, and as AggieE46 said, "you get to take junk apart"

Plus, even if you get the Dr. Vanos Unit, you still have to basiclly tear it down to the same point anyways. The only thing your saving is the time to actually change the seals.
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Old 06-17-2010, 09:36 AM   #4
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I feel I may have 'the rattle' so bearings would probably be done as well.

I have a laundry list of things to do on this car and not a lot of time to do it in, so time is a premium.
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Old 06-17-2010, 09:37 AM   #5
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I think the cost is closer to about $120, and as AggieE46 said, "you get to take junk apart"

Plus, even if you get the Dr. Vanos Unit, you still have to basiclly tear it down to the same point anyways. The only thing your saving is the time to actually change the seals.
+1. That's most of the labour right there.
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Old 06-17-2010, 10:40 AM   #6
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I really doubt you have "the rattle". It comes from higher lift cams.

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Originally Posted by RalphLikeAMofo View Post
I feel I may have 'the rattle' so bearings would probably be done as well.

I have a laundry list of things to do on this car and not a lot of time to do it in, so time is a premium.
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Old 06-17-2010, 10:57 AM   #7
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So the theory is that it's probably safe at 91k to just do the O-ring?
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Old 06-17-2010, 11:25 AM   #8
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Yes
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Old 06-17-2010, 11:28 AM   #9
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do the bessian kit. you will not regrett it.
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Old 06-17-2010, 12:11 PM   #10
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Thanks for the input, guys.
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