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Old 09-17-07, 12:16 PM   #1
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Default Install Guide: STi Group-N Engine Mounts

***WARNING***
This is from the moderator team: Later in this thread, members dispute the torque specifications recommended by EDO Performance. It is always imperative that you verify any torque specs recommended by others in the event you perform ANY work on your car. This is necessary for not only your safety but the safety of others. Please bring your vehicle to a trusted automotive technician if you have no experience working on your car yourself or you feel the least bit uncomfortable performing any of the steps of the how-to install. Proceed AT YOUR OWN RISK.
***WARNING***


Hello again from EDO Performance!

Today we have for you an installation guide for the STi Group-N engine mount. They are being installed on a 2006 STi, but the procedure will be the same for any other Impreza.

The STi Group-n engine mounts are for use on the 2002+ Imprezas. They replace the vehicles factory mounts, which allow for excess play and motion of the engine. This excess motion can negatively affect performance and handling.
Using the hardened Group-n mounts securely holds the engine and prevents the unwanted movement, improving the performance and response of your vehicle.

1. First, as with most installs, you need to get the car in the air. Jackstands, ramps or a lift. Whichever you have available. Ramps or a lift would be preferable as you will be jacking the motor up, and you don’t want the car falling off jackstands.

2. You will be doing this install one side at a time. The instructions are for the passengers side mount but the steps are the same for the drives side.



3. Remove the lower motor mount bolt (14mm) located behind the swaybar.





4. Using either a transmission jack or a floor jack with a bock of wood, slowly lift the motor from the oil pan until the lower motor mount stud has cleared the subframe.



5. Now you need to remove the two bolts that are holding the top half of the mount to the motor. The front one as seen in the picture is pretty easy to get out with a 14mm socket on an extension. Just remember, you are only doing one side at a time so there is always one mount holding the motor in place.





6. Here comes the tricky part, the rear bolt for the mount. As you can see in the picture, it’s wedged up in there pretty far. The best way I’ve found to get it is a 14mm ratcheting open-end wrench that is slanted. Even with that, it’s still tricky to get the leverage you need on it.





7. Once you have those bolts off, you should be able to wiggle the mount out. As you can see in the side-by-side, the Group-n mounts are wider than the stock STi mounts. What you can’t see is how much stiffer they are. Use the nuts off the top plates of the stock mounts to attach the new top plates to the group-n mounts.

8. Slip the new assembled mount in to place and attach it to the motor using the old bolts, do not tighten until you have the lower stud aligned with the slot in the subframe. Slowly lower the motor until the stud is about halfway through the subframe. Now you can torque the upper bolts to 85 ft/lbs.

9. Lower the motor the rest of the way down and tighten the lower mount bolt (don’t forget the washer) to 70 ft/lbs.



10. Repeat steps 3-9 for the other side of the car.

11. Lower the car down, take it for a drive, and enjoy your new motor mounts!


If you would like to request an install guide for any of the other products we carry please fee free to contact us!

-Kevin
kevin@edoperformance.com
AIM: EDO Kevin
714-602-5741


Last edited by Kevin; 10-06-09 at 03:54 AM.
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Old 09-17-07, 04:39 PM   #2
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Default Re: Install Guide: STi Group-N Engine Mounts

Great write up and pics! I am planning to get a set of Group-N mounts in the near future, this will be very handy, thanks!
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Old 09-18-07, 11:54 AM   #3
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Default Re: Install Guide: STi Group-N Engine Mounts

nice write up!

this is the only mod that I failed...I let the shop do this for me..
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Old 09-24-07, 01:27 PM   #4
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Default Re: Install Guide: STi Group-N Engine Mounts

You're welcome!

-Danny
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Old 10-03-07, 10:30 AM   #5
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Default Re: Install Guide: STi Group-N Engine Mounts

How safe is it to jack the motor up on the oil pan? Thanks for the write-up!
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Old 10-04-07, 03:38 PM   #6
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Default Re: Install Guide: STi Group-N Engine Mounts

Quote:
Originally Posted by RAPTR View Post
How safe is it to jack the motor up on the oil pan? Thanks for the write-up!
Safe as long as you distribute the lifting force. As long as your not lifting from a tiny point (like the teeth on a floor jack) you will be fine. Most people use a piece of wood to distribute the weight.

Last edited by edoperformance; 10-04-07 at 03:43 PM.
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Old 10-04-07, 07:25 PM   #7
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Default Re: Install Guide: STi Group-N Engine Mounts

How thick do you think the wood should be? Also on a separate note, have you ever had a chance to compare the Group N mounts to the Cusco mounts?
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Old 10-04-07, 07:28 PM   #8
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Default Re: Install Guide: STi Group-N Engine Mounts

nice work.
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Old 10-05-07, 05:25 AM   #9
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Default Re: Install Guide: STi Group-N Engine Mounts

Don't you need to remove the pitch stop to do this??
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Old 10-05-07, 06:13 AM   #10
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Default Re: Install Guide: STi Group-N Engine Mounts

Quote:
Originally Posted by Good2Go View Post
Don't you need to remove the pitch stop to do this??
you should..
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