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Spinning stud on the driver's side motor mount...


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Today I finally got a chance to break down the front subframe that I pulled a couple of months ago.   Went fairly smoothly except for a broken bolt in each strut (looks like they have a drain design that traps dirt and moisture inside and promotes corrosion, particularly on one particular bolt closest to the drain/vent....) The front bearing/disc brake design is also a little frustrating, but still easier than changing the inboard rotors on my old Alfa GTV..

 

Anyway, I've broken everything down except for the driver's side motor mount.  This is a square mount but there is still only one bolt holding it to the subframe.  The stud just spins inside the rubber mount.  Is there a magic way to resolve this or do I just have to cut or grind the mount down to the stud and put a pair of vice-grips on it?  

 

Thanks in advance for your insight!

 

Scott

 

Current: '74 2002,75 2002, 88 E28 M5(2), 92 E34 M5, 02 E39 M5, 01 E39T M5, 08 E93 328i, 08 E61 535i, 09 E93 335i, 09 E91 328ix, 12 E70 3.5i  '67 Alfa Romeo Spider; '69 Alfa Romeo Spider, '08 Dodge 1500 SLT. Past BMWs: '74 2002tii, '74 2002, '76 E12 530i, '78 E12 528i, '85 E28 535is, '93 E34 528iT, '94 E34 528i, '99 E36 328ic (2) '99 E39 528iT, '03 E46 330i convt., '07 E90 328i

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I bought one of these years ago "just in case".

The problem is, it doesn't usually fit around the nut, due to tight quarters.

Is there room in your situation?   

Image result for nut splitter

Sometimes you can cut a slot in the bolt, where it protrudes through the nut and hold it with a screw driver, to break the nut free. 

 

Cutting into the rubber wouldn't be such a bad idea.  I'd go for a saw before a grinder though.  Much less of a mess.

 

 

     DISCLAIMER 

I now disagree with some of the timing advice I have given in the past.  I misinterpreted the distributor curves in the Blue Book. 

I've switched from using ported-vacuum to manifold, with better results. 

I apologize for spreading misinformation.  

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