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      12-22-2019, 04:56 PM   #1
wyshyvanuk
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E46 M3 Strutt Brace Success

Just installed an E46 M3 strut brace on my 2008 Z4M. Points of interest:
1. There was just a very, very, very slight mis-alignment between the mounting areas of the actual strut bar and the cast pieces that attach to the strut "humps". Loosened some bolts and the pieces fit nicely. It was as though the direction of the rectangular mounting projections were about a half degree off.
2. Clearance between the bottom of the cross bar and both the fuel line and the chromed nut on the valve cover was about 5.25mm, measured without moving the car after installation.
3. The engine sits on relatively new Vibra-Technics street variety engine mounts.
4. Looks like the mounting points on the bar are about a total of 6mm closer than on the E46, well within the range of the oblong "slots" on the bar.
5. I torqued the cast strut mount nuts (6 each) to 30 Nm, and the nuts that attached the bar (4 each) to 20 Nm. I was over-cautious and worried about snapping a bolt, and I'm still looking for definitive values.
6. I removed both alignment studs, as they interfered with the installation.
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Last edited by wyshyvanuk; 12-23-2019 at 08:51 AM.. Reason: #4
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      12-23-2019, 05:13 AM   #2
86Zed
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Nifty. It looks like the strut dome nuts (3 ea side) and brace fasteners are torqued to 35Nm (installation guide) and as high as 41Nm (forum postings).


http://www.zpost.com/forums/attachme...0&d=1206237883

https://www.zpost.com/forums/showthread.php?t=1056166
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      12-23-2019, 09:06 AM   #3
wyshyvanuk
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Thank you, sir. The original installation instructions were a total treat!! And I can order some additional protective caps for the brace fasteners.
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      12-23-2019, 07:25 PM   #4
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Will one of these M3 E46 strut bars fit on our 3.0si coupe? Seem to be plenty of them (the bars) for sale.
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      12-23-2019, 09:52 PM   #5
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Quote:
Originally Posted by Willy Sea View Post
Will one of these M3 E46 strut bars fit on our 3.0si coupe? Seem to be plenty of them (the bars) for sale.
It should so long as the oil cap doesn’t get in the way.
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