engine bolts intact - 23k miles

Trev · 11-12-2010, 05:25 PM

Just FYI I checked my bolts a few months back. Two we're missing from front of passenger side mount. The back two we're both backing out. for ref its a 07 mz4c with 17K.

Replaced all eight bolts with the black motorsport bolts.

Now the interesting thing is I found that with the passenger front wheel off the car you can look into the engine bay just behind where the steering arm comes thru & actually see 3 of the four passenger side bolts.
If you paint mark the bolts you can now perform a quick visual inspection.
Lastly for the truly paranoid, that'd be me, if you reach in you can attempt to wiggle the mount.

johanness · 11-12-2010, 06:05 PM

Quote:

Originally Posted by XMetal

Anyone with an 03/08 and later production date (which the TSB exclude) have any issue with their engine mount bolts?

X2. Anyone with an 03/08 build get their checked yet? What outcome?

Pheonix · 11-13-2010, 08:30 AM

My 2007 Z4MC with built date of 11/2006 has 2 front passenger bolts backed out (i could turned them by hand). The rests seemed to be intact! Scheduled to bring it in for the dealer to take care of it since the car is still under warranty.

wrh3 · 11-13-2010, 10:22 AM

I have a 7/2007 build and went to talk to the tech when they replaced my oil pan (defective seal on one of the manufacturing access plugs) and he put a wrench on all of mine and said they were tight, I plan to replace them with the Motorsport parts over the holidays though.

The HACK · 11-13-2010, 11:29 AM

The reason why the chassis brace bolts are bigger and tougher and torqued to a higher standard is because they're chassis brace bolts. They need to stretch and hold the brace in place and it can not move in relation to the chassis (the brace). The engine bolts are to attach mounts to the engine, and the engine has some free movement because the engine mounts are rubber. They do not need to be, nor should be, as big and hard and torqued super tight compared to the chassis brace.

11-12-2010, 05:25 PM	#23
Trev Private First Class 5 Rep 108 Posts Drives: Z4MC Join Date: May 2010 Location: Portland Oregon iTrader: (0)	Just FYI I checked my bolts a few months back. Two we're missing from front of passenger side mount. The back two we're both backing out. for ref its a 07 mz4c with 17K. Replaced all eight bolts with the black motorsport bolts. Now the interesting thing is I found that with the passenger front wheel off the car you can look into the engine bay just behind where the steering arm comes thru & actually see 3 of the four passenger side bolts. If you paint mark the bolts you can now perform a quick visual inspection. Lastly for the truly paranoid, that'd be me, if you reach in you can attempt to wiggle the mount.
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11-13-2010, 08:30 AM	#25
Pheonix Major 394 Rep 1,011 Posts Drives: 2007 Z4 M Coupe 2012 e93 M3 Join Date: Sep 2008 Location: Bay Area, CA iTrader: (8) Garage List 2007 BMW/Z4MC [0.00]	My 2007 Z4MC with built date of 11/2006 has 2 front passenger bolts backed out (i could turned them by hand). The rests seemed to be intact! Scheduled to bring it in for the dealer to take care of it since the car is still under warranty.
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11-13-2010, 10:22 AM	#26
wrh3 Car Guy 39 Rep 801 Posts Drives: BMW M2, Alfa Romeo Giulia/4C Join Date: Aug 2007 Location: ATL, GA iTrader: (10)	I have a 7/2007 build and went to talk to the tech when they replaced my oil pan (defective seal on one of the manufacturing access plugs) and he put a wrench on all of mine and said they were tight, I plan to replace them with the Motorsport parts over the holidays though. __________________ Bill- 2024 M2 www.billswebspace.com/bmwindex BMW CCA Member # 389948
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11-13-2010, 11:29 AM	#27
The HACK Midlife Crises Racing Silent but Deadly Class 1827 Rep 5,337 Posts Drives: 2006 MZ4C, 2021 Tesla Model 3 Join Date: Oct 2007 Location: Welcome to Jamaica have a nice day iTrader: (1)	The reason why the chassis brace bolts are bigger and tougher and torqued to a higher standard is because they're chassis brace bolts. They need to stretch and hold the brace in place and it can not move in relation to the chassis (the brace). The engine bolts are to attach mounts to the engine, and the engine has some free movement because the engine mounts are rubber. They do not need to be, nor should be, as big and hard and torqued super tight compared to the chassis brace. __________________ Sitting on a beat-up office chair in front of a 5 year old computer in a basement floor, sipping on stale coffee watching a bunch of meaningless numbers scrolling aimlessly on a dimly lit 19” monitor.
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