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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Thu, Apr-20-2017, 07:52:52 AM   #1
Rajvosa
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Default Drilling Vanos disc

Are there any online guides as to how to exactly drill the new holes on the disc? Size , position etc?

Thinking of getting vanos done in near future
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Old Thu, Apr-20-2017, 01:23:37 PM   #2
BergA
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Default Re: Drilling Vanos disc

Some preliminary research I've done shows the typical diameter to drill/mill is 9.75mm or 9.8mm.

I would like to know the distance between the holes, though. That's something I haven't found in my searching.

Update: I just ordered a "letter size W" chucking reamer, at 9.804mm. It was $11 shipped from eBay -- beats $150 from Beisan. If you have the right tools, why not do it yourself? Let us know if you find the correct pitch between holes, as will I.

Last edited by BergA; Thu, Apr-20-2017 at 01:44:35 PM.
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Old Thu, Apr-20-2017, 01:26:34 PM   #3
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Default Re: Drilling Vanos disc

You can just get it perfectly done already.

http://www.beisansystems.com/products.html
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Old Thu, Apr-20-2017, 02:10:31 PM   #4
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Default Re: Drilling Vanos disc

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Originally Posted by TheSt|G View Post
You can just get it perfectly done already.

http://www.beisansystems.com/products.html
yes i know already. i plan to get seals off Beisan, but trying to get cheaper option on the disc. i am in Australia so by time i pay USD and shipping plus shipping core back... you get the picture.

if i can get it done cheaper and achieve same result why not then
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Old Thu, Apr-20-2017, 02:50:22 PM   #5
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Default Re: Drilling Vanos disc

I mean, from everything ive seen, the disk is perfectly round.

You drill two 9.8mm holes at 90 degrees from the originals. I have a friend with a multi million dollar cnc shop. I'm sure he could bust out my new holes easy.
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Old Thu, Apr-20-2017, 03:46:53 PM   #6
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Default Re: Drilling Vanos disc

Its not rocket surgery, just drill the smaller holes 90 degrees from factory to the same depth, if you have access to a drill press you are gtg, just go slow, use oil and a pilot drill, dont just go right for the 9.8mm.
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Old Thu, Apr-20-2017, 06:30:30 PM   #7
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Default Re: Drilling Vanos disc

OP, I've got a buddy (actually a forum member here) who does this on the side, and I believe he's very reasonable. PM me if you want his contact info...
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Old Thu, Apr-20-2017, 06:37:33 PM   #8
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Default Re: Drilling Vanos disc

I've done 4 of them for friends and myself where I work. Pretty easy on the cnc.
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Old Fri, Apr-21-2017, 12:52:20 AM   #9
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Default Re: Drilling Vanos disc

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Originally Posted by M3_#67 View Post
I've done 4 of them for friends and myself where I work. Pretty easy on the cnc.
What is the distance between holes?
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Old Fri, Apr-21-2017, 07:24:03 AM   #10
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Default Re: Drilling Vanos disc

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Originally Posted by billybilly View Post
Its not rocket surgery, just drill the smaller holes 90 degrees from factory to the same depth, if you have access to a drill press you are gtg, just go slow, use oil and a pilot drill, dont just go right for the 9.8mm.
No, never on just any old drill press. That would be a recipe for tab failure or not fitting. Especially if A. The center to center distance is off from the center bore from one drilled hole to the other. B. The drilled holes are off center (not in a straight line with the center bore). C. The part isn't sitting flat one way or an other...etc..It's a task that needs to be precise. Reason being is you want both tabs to contact the walls of holes at the same time. Otherwise one tab is taking all the stress.

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What is the distance between holes?
Can't remember off the top of my head. It's been a year or so since I've done one. I should still have my notes in my tool box at work but I'm off til Monday.
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Discussing Drilling Vanos disc in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)