James Barone Racing Rear Adjustable Camber Arms Install

These adjustable camber arms are necessary to bring rear camber back into spec after lowering because lowering significantly increases negative camber, causing excessive tire wear. They also allow up to 3 degrees of negative camber for auto-x and road racing. These adjustable camber arms fit both the Gen1 and Gen2 model Mazdaspeed3s.

This install is straight-forward, but can be difficult without the right equipment.

IMPORTANT: THE CAMBER ARMS ARE NOT IDENTICAL. THE ADJUSTING END FOR EACH ARM SHOULD BE LOCATED AT THE WHEEL OF THE VEHICLE, AND THE JBR LOGO SHOULD BE READABLE FROM THE REAR OF THE CAR.

NUMBERS IN PARENTHESIS FOUND IN THE FOLLOWING INSTRUCTIONS ARE TORQUE NUMBERS TO BE USED WHEN RE-INSTALLING. THE FIRST RANGE OF NUMBERS ARE MEASURED IN NEWTON METERS. THE SECOND RANGE OF NUMBERS IS MEASURED IN POUND FEET.

James Barone Racing Camber Arm Mazdaspeed3

1. Remove the 17mm bolt connecting the stock rear upper arm to the wheel and brake assembly (76-102n*m, 57-75lb*ft).

James Barone Racing Camber Arm Mazdaspeed3 1

2. Remove the 17mm bolt connecting the stock rear upper arm to the frame (76-102n*m, 57-75lb*ft). Removing the bolt can be difficult. A long 17mm open or box ended wrench will be helpful. There is not enough room to fit a ratchet. Once the bolt is out you can remove the arm from the vehicle.

James Barone Racing Camber Arm Mazdaspeed3 2

3. Lay the stock arm on the ground and lay the corresponding adjustable arm on top of it. To make sure they are lined up correctly use the two bolts you removed from the vehicle and thread them through both arms. Once the adjustable arm is lined up with the stock arm tighten the jamb nut to lock it in place.

James Barone Racing vs Stock Camber Arm Side by SideMazdaspeed3

James Barone Racing Camber Arm Mazdaspeed3 3 1

James Barone Racing Camber Arm Mazdaspeed3 3 2

James Barone Racing Camber Arm Mazdaspeed3 3 3

4. Installation is the reverse of removal. If you have trouble installing the new arm due to tight clearances I suggest using moly grease and a soft mallet to slide the arm into place.

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James Barone Racing Rear Motor Mount Install and Review

I ordered my James Barone Racing rear motor mount on Monday and it arrived yesterday. They shipped it first class so it only took 3 days to get here.

** UPDATE: You read my review of this mount after 25,000 miles here. **

James Barone Racing offers two different rear motor mounts. More details about each can be found here. I opted for the chrome-molly dogbone mount because the extra vibration and noise aren’t a problem for me (I actually enjoy it!). This is everything that came in the box:

James Barone Rear Motor Mount Box Contents

The box included a piece of paper with contact information and directions to the install instructions on their website, a bag with a nut and lock washer, and the mount itself.

After spending an hour getting the front end on jack stands (it was my first time lifting my MAZDASPEED3) the install was quick and straightforward. It only took me about 30 minutes once I got under the car to get the mount installed and the car back on the floor. You can find details on installing this mount here. Here’s a picture of the stock mount and the James Barone Racing mount side by side:

Stock Mount and James Barone Racing Mount

First Impressions:

From the moment I started the car I could feel and hear the difference. During warm-up there is a significant amount of vibration and noise, which is a low drone, I’m guessing from the exhaust system. Once the car warmed up and was sitting at idle both vibration and noise had decreased, but still not to the stock level.

Once I pulled away for the first time I noticed the resonance. Between about 1,750 and 2,750 rpms it feels like the engine and frame resonate, creating a significant increase in vibration and noise. It is most noticeable while getting moving in first and while hovering around the 2,500-2,750 rpm zone, especially if you’re doing something like cruising down a hill in gear.

I made this video to illustrate the difference between the new mount and stock mount at idle. The stock mount only had about 2,000 miles on it so it’s fairly new. Be sure to turn the video quality up to 720 and your bass up to hear the difference in “drone”. There is no audio until after the visual display so watch the whole thing.

Performance:

I installed the mount yesterday and have since drove about 20 miles on it. The car now has much more of a raw feel to it. It feels as if you’re finally in control of the engine, and this is most noticeable in the clutch action. Getting moving in first is far more consistent, and matching driveline speeds is much easier. Sifting is also more precise, especially during heavy acceleration! Shifting from second to third is now less of a problem.

In regards to wheel hop there is absolutely none accelerating through second with wide open throttle and shifting to third. I have yet to accelerate heavily through first to second so I can’t comment on that yet.

All in all I am thoroughly impressed with this mount, and I can honestly say that it IS WORTH EVERY PENNY! Well done James Barone Racing!

I will be posting a follow-up review after a few thousand miles. In the meantime be sure to follow me on facebook and twitter! If you found this post helpful please feel free to donate!