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Old 09-14-2017, 01:36 AM   #1
andytheyagn
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I stripped threads in my VANOS unit

I went about installing new vanos seals on my car today and had no problems until I was reinstalling the exhaust piston cover plate. I set the torque on my torque wrench to 10 ft-lbs instead of 10 Nm (as in BeisanSystem's tutorial), and ended up stripping the soft aluminum threads of the VANOS in one bolt :


At this point, I knew it was unrecoverable, so I grabbed some high temperature threadlocker and torqued it the best I can (about 2Nm before it started to give). My thinking is that this cover might leak oil, so the exhaust VANOS piston might not be effective (just like it was before i changed the seals), but at least the threadlocker will prevent this bolt from vibrating out and falling into the timing chain or something horrible.

Does anybody have any advice or speculation as to what might happen? I've already reinstalled everything and I'm waiting for tomorrow for my RTV sealant to dry and go for a test drive. What should I expect? Is my car toast? Do I need a new VANOS?
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Old 09-14-2017, 02:49 AM   #2
coop94xj
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I stripped threads in my VANOS unit

You could try using a thread repair kit like Helicoil. They sell them at all the local parts places.
http://www.stanleyengineeredfastenin...ands/heli-coil


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Last edited by coop94xj; 09-14-2017 at 02:51 AM.
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Old 09-14-2017, 08:37 AM   #3
Poolman
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Heilicoil kit is the correct answer. Quick and easy fix.
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Old 09-14-2017, 09:58 AM   #4
Fox Fader
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Funny how sometimes a torque wrench can get you in trouble. I've been going by 'feel' for soooo many years now. I do use a TW in critical areas though.
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Old 09-14-2017, 10:46 AM   #5
kaLinski
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^ posts above me are correct. Helicoils are a great answer and have alot of strength to offer within a simple installation method. (Source: I represent Stanley and sell helicoil threaded inserts to many, many companies.) You can go to your local hardware store and find "threaded inserts" which are the same thing.

Stanley did a fantastic job of marketing their brand of threaded inserts, people say "helicoil" just like people ask for a "kleenex" instead of a tissue. You're calling a product by its brand name, and not by what it actually is. KATO is another brand of inserts, one that I am more fond of because they use a tangless threaded insert so you don't have to break off the tab on the bottom and retrieve it back out of your predrilled hole for the insert. I am just rambling though...Home Depot should have common size threaded insert or your local specialty hardware store (fastenal too.)
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