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E36 M3 (1995-1999)

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  #1  
Old 02-05-2013, 08:33 AM
southbeachm3 southbeachm3 is offline
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Mein Auto: E36 M3/2/5
Stripped thread where bottom bolt of serp belt tensioner goes. Please Advise

Hi Guys, any advice would be great. This is for a 95 M3.

So I was torquing down the bottom bolt of the hydraulic tensioner (the one for the serpentine belt) and to my knowledge, per my Bentley Manual the bolt is an M8.8 and thus 18 ft/lbs of torque would be ok... I barely got a few turns in (nowhere near enough to be 18 ft/lbs) and it spun...? I took out the bolt and saw that I stripped maybe 2-3 threads.

So the bolt was flush even when spinning, which means it couldnt grab any more thread right? in other words, its too short? but then again BMW made it that way for a reason...? Im thinking go to the dealer and get a few bolts that are the same diameter maybe just a little bit longer to just secure it in place. What do you guys think?

Also, is the thread I stripped in the base plate? or on the engine block? :/

Thanks in advance!

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  #2  
Old 02-05-2013, 11:32 AM
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petriej petriej is offline
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I'd repost this in the E36 forum. I'm not sure if you're screwed, or REALLY screwed. Probably neither. Might need to retap it.
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Old 02-05-2013, 07:48 PM
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crisscross crisscross is offline
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I would look into a heli-coil type insert where you can use the same size hardware.
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