Engine bolts

[Viren]

I'm going to check my engine bolts over the next week and wanted to confirm a few things from reading all the threads out there;

1. Do you need to angle torque any of the engine mount bolts (I think this is only required on the reinforcement plate......)?
2. Can you get to all the engine mount bolts without removing the reinforcement plate?
3. If replacement is required where would you suggest to support the engine (using a jack and piece of wood)?
4. I think the torque required for all 8 bolts is 21nm (or 24nm if using 10.9 bolts)?

Cheers

 

[Angus McCoatup]

Hello,

I wrote a 'how-to' for the job of replacing the engine mount bracket bolts and the engine mounts themselves. Sorry it's a bit wordy and lacking in photos, but I hope it might be of some help:

http://www.z4-forum.com/forum/viewtopic.php?f=30&t=58419

To summarise, the answers to your questions are:

1. The engine mount bracket bolts should not be angle torqued - you are right in thinking it is just the reinforcement plate bolts that must be angle torqued.
2. Yes, I was able to.
3. If you're just replacing the bolts securing the engine mount bracket to the engine, you would not need to support the engine. Just remove and replace one bolt at a time - the other three on each bracket will comfortably support the weight of the engine when the car is stationary. If any of the original bolts are missing or loose, do those ones first.
4. I replaced the original bolts with ones with a higher tensile strength (10.9) and used Nord-lock washers. According to information I found at the time, the correct torque for these bolts with lubricated threads is 32 NM.

More information about the job can be found here:

http://www.zpost.com/forums/showthread.php?t=635649

 

[Viren]

Hello,

I wrote a 'how-to' for the job of replacing the engine mount bracket bolts and the engine mounts themselves. Sorry it's a bit wordy and lacking in photos, but I hope it might be of some help:

http://www.z4-forum.com/forum/viewtopic.php?f=30&t=58419

To summarise, the answers to your questions are:

1. The engine mount bracket bolts should not be angle torqued - you are right in thinking it is just the reinforcement plate bolts that must be angle torqued.
2. Yes, I was able to.
3. If you're just replacing the bolts securing the engine mount bracket to the engine, you would not need to support the engine. Just remove and replace one bolt at a time - the other three on each bracket will comfortably support the weight of the engine when the car is stationary. If any of the original bolts are missing or loose, do those ones first.
4. I replaced the original bolts with ones with a higher tensile strength (10.9) and used Nord-lock washers. According to information I found at the time, the correct torque for these bolts with lubricated threads is 32 NM.

More information about the job can be found here:

http://www.zpost.com/forums/showthread.php?t=635649

Awesome! Thanks for this, will look through your write-up, hopefully all makes sense to me!