Ali Allage (SPT)

Engine Torque Damper

With the current power levels on the Project Evo, something had to be done about the drive train lash we were experiencing. The Evo suffers from a good amount of engine movement due to the soft stock motor mounts. Some issues that results from the motor movement are increased stress on exhaust mounts (and motor mounts), problems shifting, and excessive wheel hop.

Upgrading the motor mounts was the only solution I could think of, until I was introduced to the Stiffy from Ingalls Engineering. The Stiffy seemed like the best solution if you didn’t want to go through the hassle of installing upgraded motor mounts or inserts. Plus it had the ability to adjust the stiffness level, which is a great feature especially if you drive your Evo daily.

The product arrived at my door within a weeks time. Included in the package was the following:

- Stiffy Engine Torque Damper
- Engine Mounting Bracket
- Chassis Mounting Bracket
- Hardware Kit (includes: two 12mm engine mount nuts, two 12mm washers, two bolts, two nylon locking washers, and two washers.)

Installation was simple and took about 30 minutes to complete. Once I finished the install I was out on the road testing it out.

Impressions

After the install I made sure to set the damper to the softest setting before heading out.

Softest/Lowest Setting

Initially I couldn’t feel a difference in the car’s behavior, until I started playing with the throttle. I tried to reproduce the drive train lash I experienced before to see if there was any improvement. I did notice a slight improvement. My shifting was also a little smother than before. Cabin vibrations were very mild, but keep in mind the project Evo has a lumpy idle due to the 272 cams so I’m pretty used to the car being shaky.

Medium/Middle Setting

This setting was a definite improvement from the last setting. Shifting improved and the lash experienced during the last run had reduced. This time around I was able to feel vibrations within the cabin. Again I’m not ultra sensitive to cabin noise or vibrations so this was tolerable for me on a daily basis.

Stiffest/Highest Setting

Finally I decided to go all the way and set the damper to the stiffest setting and head out for the final test run of the day. On this run I could definitely tell that the product was making a difference. Shifting was really smooth this time around. I tried to reproduce the lash again but this time it had greatly reduced from the first setting. Cabin vibrations were definitely noticeable and may be a pain to deal with on daily basis.

At the end of the day I have to say this is a good mod that was easy to install and easy to use. It’s a great alternative to motor mounts, especially if you drive your Evo on a daily basis. A little Dynamat around the strut tower could also help absorb any vibrations experienced, if any. I would also keep the Stiffy set anywhere between the softest to the medium setting for everyday use. I would recommend only using the highest setting on track days.