Install Guide: STi Group-N Engine Mounts

**edoperformance** · 09-17-2007, 12:15 PM

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

kts262 · 09-17-2007, 04:39 PM

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!

bzbuzz · 09-18-2007, 11:53 AM

nice write up!

this is the only mod that I failed...I let the shop do this for me..

**edoperformance** · 09-24-2007, 01:26 PM

You're welcome!

-Danny

RAPTR · 10-03-2007, 10:29 AM

How safe is it to jack the motor up on the oil pan? Thanks for the write-up!

**edoperformance** · 10-04-2007, 03:38 PM

Quote:

Originally Posted by RAPTR

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.

RAPTR · 10-04-2007, 07:25 PM

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?

JD_STI · 10-04-2007, 07:27 PM

nice work.

Good2Go · 10-05-2007, 05:25 AM

Don't you need to remove the pitch stop to do this??

bzbuzz · 10-05-2007, 06:13 AM

Quote:

Originally Posted by Good2Go

Don't you need to remove the pitch stop to do this??

you should..

***SiCkSTi04*** · 10-05-2007, 06:17 AM

whats the overall time for this install?

flytojungho · 10-05-2007, 09:12 AM

Quote:

Originally Posted by Good2Go

Don't you need to remove the pitch stop to do this??

i heard people not removing the pitch mount for this but i dunno for sure

***VSGTS14*** · 10-05-2007, 09:45 AM

you need to remove pitch stop because you need to jack up the motor a good amount and you'll put stress on the pitch stop when doing this. just because it pivots doesn't mean it'll go up nicely.

IUSTi · 10-05-2007, 10:40 AM

the more and more i read about this install, the more and mre i get scared. I dont have a lift either so i dunno if its even possible to do with the car on stands. How much would it cost to get this done at a shop?

***VSGTS14*** · 10-05-2007, 11:43 AM

using a lift is wayyyyy easier, the install is actually not hard at all, it's pretty easy.

09-17-2007, 12:15 PM	#1
edoperformance Authorized Vendor Car: Zero/Sports TA STi Posts: 576 Join Date: Oct 2005 Trader Rating: (16)	Install Guide: STi Group-N Engine Mounts 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 This ad is not endorsed by this member. Please register or login to hide this ad. Last edited by edoperformance : 10-05-2007 at 08:38 AM.

09-17-2007, 04:39 PM	#2
kts262 HowTo Contributor Car: 2008 DGM (BBS+Navi) Fav Mod: stock FTL? Location: College Park, MD Posts: 2,123 Join Date: Jan 2005 Trader Rating: (9)	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!

09-18-2007, 11:53 AM	#3
bzbuzz STI Driver Car: 06 wrx ltd vf34 Fav Mod: JTAG Location: IL Posts: 244 Join Date: Dec 2006 Trader Rating: (1)	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..

09-24-2007, 01:26 PM	#4
edoperformance Authorized Vendor Car: Zero/Sports TA STi Posts: 576 Join Date: Oct 2005 Trader Rating: (16)	Re: Install Guide: STi Group-N Engine Mounts You're welcome! -Danny

10-03-2007, 10:29 AM	#5
RAPTR Professional STI Driver Car: My journal Fav Mod: Tank the Terrier! Location: Walnut Cr, CA/Boulder, CO Posts: 448 Join Date: Jun 2006 Trader Rating: (3)	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!

10-04-2007, 07:25 PM	#7
RAPTR Professional STI Driver Car: My journal Fav Mod: Tank the Terrier! Location: Walnut Cr, CA/Boulder, CO Posts: 448 Join Date: Jun 2006 Trader Rating: (3)	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?

10-04-2007, 07:27 PM	#8
JD_STI Spec C Club Car: 07 STI Fav Mod: Zzyzx Coilovers Location: SoCal Posts: 1,196 Join Date: Jul 2007 Trader Rating: (0)	Re: Install Guide: STi Group-N Engine Mounts nice work.

10-05-2007, 05:25 AM	#9
Good2Go Silver Member Car: 04 STi Fav Mod: Driver weight reduction Posts: 119 Join Date: Oct 2005 Trader Rating: (4)	Re: Install Guide: STi Group-N Engine Mounts Don't you need to remove the pitch stop to do this??

10-05-2007, 06:17 AM	#11
*SiCkSTi04* RSV2/BF2142 Player Car: Subaru WRXSTi 04 JBP Fav Mod: Fixing Subie Rattles :) Location: Boynton Beach, FL Posts: 730 Join Date: Jan 2006 Trader Rating: (7)	Re: Install Guide: STi Group-N Engine Mounts whats the overall time for this install?

10-05-2007, 09:45 AM	#13
*VSGTS14* Muller Chevrolet Car: 08 Chevy 2500HD Fav Mod: a new 08 STi Location: Milford, NJ Posts: 9,984 Join Date: Oct 2004 Trader Rating: (11)	Re: Install Guide: STi Group-N Engine Mounts you need to remove pitch stop because you need to jack up the motor a good amount and you'll put stress on the pitch stop when doing this. just because it pivots doesn't mean it'll go up nicely.

10-05-2007, 10:40 AM	#14
IUSTi Spec C Club Car: 05 Subaru WRX STi Fav Mod: EVO Recaro Seats Location: NJ(Home)/IN(College) Posts: 1,324 Join Date: Dec 2005 Trader Rating: (4)	Re: Install Guide: STi Group-N Engine Mounts the more and more i read about this install, the more and mre i get scared. I dont have a lift either so i dunno if its even possible to do with the car on stands. How much would it cost to get this done at a shop?

10-05-2007, 11:43 AM	#15
*VSGTS14* Muller Chevrolet Car: 08 Chevy 2500HD Fav Mod: a new 08 STi Location: Milford, NJ Posts: 9,984 Join Date: Oct 2004 Trader Rating: (11)	Re: Install Guide: STi Group-N Engine Mounts using a lift is wayyyyy easier, the install is actually not hard at all, it's pretty easy. This ad is not endorsed by this member. Please register or login to hide this ad.