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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 03-14-2013, 09:57 AM   #1
330iBlue
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Join Date: Nov 2012
Location: Texas
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Disa valve seal issue

I need to replace the lower elbow boot on my 05 330i. Can't get to the metal clamps. I read if you take off the disa,it is easier to fix. Fear is that once I take off the valve, I will need a new o ring which you can't get by itself. I need a quick fix. Can I use silicone sealant to seal it again?
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Old 03-14-2013, 10:09 AM   #2
Mflara20
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You can get a fel-pro gasket at you local auto zone with part number 35489
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Old 03-14-2013, 11:27 AM   #3
tcphoto
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I replaced both upper and lower intake boot yesterday, cleaned the ICV and inspected the Disa while I was there. I did not replace the gasket and had no issues with performance afterward. Yes, it's easier to access the clamps after removing the Disa and I'd suggest cleaning out the ICV while you are replacing the intake boots.
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Old 03-14-2013, 12:36 PM   #4
trentcdrums
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Wink

Quote:
Originally Posted by 330iBlue View Post
I need to replace the lower elbow boot on my 05 330i. Can't get to the metal clamps. I read if you take off the disa,it is easier to fix. Fear is that once I take off the valve, I will need a new o ring which you can't get by itself. I need a quick fix. Can I use silicone sealant to seal it again?
I googled the dimensions of the o-ring of the DISA, called Advanced autoparts because I googled the exact dimensions into google and they had an o-ring in stock for .99, that's a steal. Works great! It's in a thread on here I forgot what his name is but its his signature to help find issues with missfires etc.
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Old 03-14-2013, 10:15 PM   #5
WOLFN8TR
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Check out the G.A.S. Disa rebuild kit, you can get new orings from them also.

German Auto Solutions
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Old 03-25-2013, 03:15 AM   #6
MJLavelle
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The German Auto Solutions (G.A.S.) link for their O-Rings is here:
http://germanautosolutions.com/bmw_s...sa_o_rings.php
I have the same silicone O-Rings that they are selling for $5.95 available for just $2.00 each. These are the first O-Rings listed on their page.
http://forum.e46fanatics.com/showthread.php?t=977722
I also have the Flurosilicone O-Ring that they have listed at the bottom of the page for $11.95. Mine are just $6.00 each.
http://forum.e46fanatics.com/showthread.php?t=977861
These fit the 325 and 330 DISA valves only!
They are from an American O-Ring manufacturer, and not some Chinese made eBay crap. These are a commercially available size, but you have to buy in quantity.
The rubber O-Rings they sell at the parts store are not well suited to the temperatures the DISA experiences, and they will compress and stay compressed, instead of flexing as they should during heating and cooling cycles.
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