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#1
03-08-2016, 01:41 AM
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4.6is vanos bolts came loose
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#2
03-08-2016, 01:54 PM
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You're talking about the reverse-threaded T55 Torx bolt in the center of the VANOS hub, right?
Dumb question: Did you torque them down during assembly? I also clean all the threads with brake cleaner prior to assembly.
__________________
2002 X5 4.6is - Imola Red/Black (Sold) 2001 740i M Sport - Anthrazit Metallic/Black (Sold) 1998 M3/4/5 - Technoviolet/Dove (Sold) 2003 Z4 3.0i Sport - Sterlinggrau Metallic/Black (Sold) 2009 Mini JCW (The Wife's) 2015 i3 REx - Arravani Gray/Tera World (Daily Driver)
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#3
03-08-2016, 07:18 PM
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Quote:
Oh yes I am referring to the T55 Torx bolt that connects the vanos gears to to the intake cams on bank one and two. The toque specs were 81ftlbs for intake torque bolts and 92 ftlbs for exhaust sprocket bolts.
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#4
03-08-2016, 07:26 PM
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How about some locktite?
__________________
2006 4.8is, Black on White. SOLD Sniff Sniff. 2017 F85 x5m, Black on Red. BEAST MODE "The older we grow the greater becomes our wonder at how much ignorance one can contain without bursting one's clothes." - Mark Twain Unlock OBC post 5
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#5
03-08-2016, 07:42 PM
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Quote:
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#6
03-08-2016, 07:46 PM
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look into this before you do use thread lock. It might not be advisable, just to be safe.
__________________
2006 4.8is, Black on White. SOLD Sniff Sniff. 2017 F85 x5m, Black on Red. BEAST MODE "The older we grow the greater becomes our wonder at how much ignorance one can contain without bursting one's clothes." - Mark Twain Unlock OBC post 5
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#7
03-08-2016, 07:49 PM
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The torque for the VANOS hub to the intake cams is 89.
__________________
2002 X5 4.6is - Imola Red/Black (Sold) 2001 740i M Sport - Anthrazit Metallic/Black (Sold) 1998 M3/4/5 - Technoviolet/Dove (Sold) 2003 Z4 3.0i Sport - Sterlinggrau Metallic/Black (Sold) 2009 Mini JCW (The Wife's) 2015 i3 REx - Arravani Gray/Tera World (Daily Driver)
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#8
03-09-2016, 10:51 PM
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UPDATE: re-timed and re-torqued, got it back together and started her up. She runs like a dream and quiet. We are back in business with getting my 4.6is back to complete glory.
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#9
03-09-2016, 11:11 PM
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Glad to hear it. I had a VERY frustrating experience getting my 4.6 timed after completing the timing chain/guide service. Good to know you got it sorted out.
__________________
2002 X5 4.6is - Imola Red/Black (Sold) 2001 740i M Sport - Anthrazit Metallic/Black (Sold) 1998 M3/4/5 - Technoviolet/Dove (Sold) 2003 Z4 3.0i Sport - Sterlinggrau Metallic/Black (Sold) 2009 Mini JCW (The Wife's) 2015 i3 REx - Arravani Gray/Tera World (Daily Driver)
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