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General E46 Forum
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Old 09-27-2012, 11:43 PM   #1
daimler55
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vanos stud broken

i replaced my dual vanos on my 2000 328i, everything went good until one of the six mounting studs that hold the vanos assembly to the engine head snapped due an error on my part of over tightening it. can anyone tell me if this will have any negative impact on the car as far as performance or possibly a leak. ive done a bit of research it seems like taking it off to remove the broken stud is a hassle
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Old 09-28-2012, 12:01 AM   #2
///MPR77
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Are you talking about the valve cover gasket?

I had a broken center front stud, just between the half moons for over 30k miles and never had a leak, I suppose it depends on which one broke though.
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Old 09-28-2012, 12:08 AM   #3
daimler55
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when removing the vanos, there are 6 nuts underneath the unit that holds it to the enging head. one of the studs broke when i was tightening the nut back after putting the new unit on
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Old 09-28-2012, 12:09 AM   #4
daimler55
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here is a pic of what im refering to

http://images.search.yahoo.com/image...mb=4hj8uQm5tZA
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Old 09-28-2012, 12:26 AM   #5
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http://www.realoem.com/bmw/showparts...70&hg=11&fg=15

Part #13

You're good, dude. Just replace it.
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Old 09-28-2012, 12:29 AM   #6
daimler55
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hey thanks for the replies...if i dont replace it just for the sake of not wanting to open everything up and risk screwing up something else again...any problems if i just leave it alone
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Old 09-28-2012, 08:43 AM   #7
ixtoxi
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There are six studs for a reason. With one missing, there will be less pressure on the gasket at that location, which will likely result in a leak eventually. Performance would not be affected unless the leak were severe. But, if it were me, I would pull the VANOS and replace the stud. Not doing it would drive me crazy!
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Old 09-28-2012, 08:47 AM   #8
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I agree with above. Pull the vanos and you should be able to grab that bolt with vice grips and get it out. Actually you might even be able to back it out with bare hand since there is no pressure on it
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Old 09-28-2012, 11:18 AM   #9
Mctwist77
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Hey man read my thread

http://forum.e46fanatics.com/showthr...960&highlight=

Same thing happened to me, let me know if you need any help
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