WRX S4 Coming to Production? - BlackBearSTi | BlackBearSTi

WRX S4 Coming to Production?

WRX S4

Subaru just announced that on August 25th, they will be introducing a new sports sedan called the WRX S4.

No information has been released on the car yet but what we do know is that the S4 stands for the following:

  • Sports Performance
  • Safety Performance
  • Smart Driving
  • Sophisticated Feel

With the name Subaru, you will have the confidence that safety will always be a main feature. In doing so, it will also incorporate the next generation EyeSight. Having all these qualities in a AWD performance car will allow drivers to be safer on the road.

Subaru also has a teaser site showing the count down to the launch date that will hopefully reveal more details and images.

Will this force manual drivers to lose some keen edge on their driving skills and allow technology to do it for them? You tell me.

Post your comments and let me know your thoughts.

 

– Harry

www.blackbearsti.com

WRX S4 Coming to Production? - BlackBearSTi | BlackBearSTi

Perrin Pitch Stop Mount Review and Installation

Perrin Pitch Stop Mount Review and Installation

A few months ago, I was able to get a deal on a new Perrin pitch stop mount from a friend. I was looking for a pitch mount that had minimal NVH (Noise Vibration Harshness). I chose this particular one as I couldn’t resist on the deal as the price was too low to pass up and produced the least amount of noise.  There are a few other brands that are considered better if you don’t mind the NVH or price. For example, I keep hearing a lot of great stuff about Super Pro and their products which come with lifetime warranty. Torque Solutions also make great mounts as well. I wish I can suggest a brand that is better over others but it’s up to the owner what kind of car you want. Is it a weekend warrior family car or a rattle can performance beast?

At the end of the day, the car is my weekend warrior and future family mobile so the rattling noises must be at a bare minimum.

For the subaru owners that are new to the automotive and mod scene , the factory pitch stop mount is designed to control the pitching of the engine and transmission under light to normal acceleration. 

Under hard acceleration, the drivetrain is being twisted front to back from front axle torque twist. To control this front to back twisting, Subaru created a pitch stop mount. The factory pitch stop is made of plastic with soft rubber bushings, allowing for a significant amount of movement under hard driving conditions, creating drivetrain slop and shudder.

I experienced it a lot during shifting with various driving such as normal cruising, WOT runs, and even coming to a complete STOP sign.

This is what the OEM pitch stop mount looks like.

OEM Subaru Pitch Mount
OEM Subaru Pitch Mount
Another view
Another view
Soft rubber
Soft rubber

 

I took a few shots comparing the oem version with the Perrin one.

Perrin Pitch Mount
Perrin Pitch Stop Mount
OEM vs. Perrin 1
OEM vs. Perrin 1
OEM vs. Perrin 2
OEM vs. Perrin 2
OEM vs. Perrin 3
OEM vs. Perrin 3

 

As you can see, the Perrin pitch stop mount is built better and stiffer than the OEM version. According to Perrin, the body is machined from 6061 billet aluminum and features a combination of 90a and 70a durometer. The bushings are as stiff as possible without introducing excessive NVH. My understanding of having minimal to no NVH is having the durometer around 83a. The oem version is made of a soft rubber compound. 

 

The installation was pretty simple. In order to reach the pitch stop mount, you have to remove the intercooler. I followed this video on how to remove it. Despite the car being the previous model, the engine components are the same. Once the intercooler is removed, it should look like this.

Engine Bay
Engine Bay

This is where the pitch stop mount is located. Here is another shot from the side.

Pitch mount location
Pitch mount location

To remove the pitch stop mount, follow the steps below.

  1. Use the video clip above to remove the intercooler.
  2. Remove 14mm nut and bolt from the transmission and rear 14mm bolt from the firewall.
  3. Remove the pitch stop mount by pulling upwards.
  4. Use the included grease and apply a small amount on both sides of the bushings of the new  pitch stop. Slide the rear side to the firewall first and then the transmission side.  You can hit it into place with your hand or use a rubber mallet.
  5. Reverse the steps in 1 and 2, respectively.

Difficulty of Installation: 3.5 out of 10 (installing the intercooler needs some angled finesse and a friend)

Time: 1 hour

After the installation was completed, I immediately took the car out for a spin. I was curious to know how much NVH I would get in the cabin. To my surprise, I didn’t hear ANY difference when I turned the key over. I let the car idle for a few seconds and still nothing. So far so good on the install. Once I got on the highway, the shifting felt even smoother, less notchy, and reduced slop. On WOT, the engine bay felt intact and connected unlike the OEM pitch stop mount which induced a lot of shudder and unwanted jerking. On turns and exit ramps, the wheels felt so planted to the ground when I downshifted gears. The best part was going through the gears at high RPMs knowing the power band never skipped a beat. I kept asking myself, why didn’t the car come this way from the factory?!

Overall, purchasing the Perrin pitch stop mount is a great inexpensive mod that makes a world of difference to how the car drives. You feel more connected to the car as you go from gear to gear. I was quite pleased with the quality and performance on such an inexpensive mod. Thank you Perrin for making a quality product.

Please comment if you have any questions.

 

– Harry

www.blackbearsti.com