Ingalls 93021 User Manual

P

ERFORMANCE

S

USPENSION

Installation Instructions for 93021

Ingalls Stiffy ™ Engine Torque Damper For 1992-1995 Honda Civic / 1994-1997 Honda Del Sol

The Stiffy™ Adjustable Engine Torque Damper is engineered to reduce deflection under hard acceleration

and cornering for improved performance and power to weight transfer. Deflection in the motor mounts, as with the
chassis and suspension, is a formidable enemy in power and weight transfer, robbing valuable horsepower and
control. The innovative, built-in damper eliminates the huge amounts of “torque shock” that result from wheel-hop
and once installed; transfers more power to the road and improves acceleration, shifting, overall control and balance.
The adjustable feature allows the assembly to be tuned and pre-loaded for racing and street applications.

CAUTION: Observe proper safety and repair procedures for installation of all chassis parts. Some chassis parts require specialized tools and experience and
therefore MUST be installed by a qualified technician otherwise an unsafe vehicle and/or personal injury could result. Wear safety glasses and other protection.

WARNING: Before beginning, check for any damaged or loose suspension connections. Loose connections here indicate worn or broken parts which MUST
BE REPLACED. Failure to replace a damaged or worn spindle and/or link may cause the wheel to separate from the vehicle, possibly resulting in serious
personal injury. Installer MUST check for proper clearance. Modification(s) may be required. Please proceed ONLY if the vehicle owner is completely aware of
these potential suspension modifications.

Estimated Installation Time: One Hour Technical Rating: Easy

Kit Includes: Tools Required:

(1) Stiffy™ Engine Torque Damper Metric and/or SAE Socket Set
(1) Engine Mounting Bracket Metric and/or SAE Open/Closed Wrench Set
(1) Chassis Mounting Bracket Metric and/or SAE Hex/Allen Wrench Set
(1) Hardware Kit Floor Jack and Jack Stands

Installation:

1. Under the hood, locate the driver’s side front upper control arm anchor bolt and remove the nut on the engine
side of the strut tower.

2. Fit Chassis Mounting Bracket over anchor bolt with the side tab directed down alongside the strut tower as
shown in Illustration 1. And secure with OEM upper control arm anchor bolt nut. Note: Make sure to press side
tab snuggly against the strut tower.

3. Locate the driver’s side engine mount and remove both 12mm nuts. Fit Engine Mounting Bracket onto the
driver’s side engine mount and secure using the OEM 12mm nuts as shown in Illustration 2. Note: The Engine
Mounting Bracket will only fit one way onto the engine mount.

4. Install Stiffy™ onto the Chassis Mount Bracket and Engine Mount Bracket using the supplied hardware. You
may need to loosen the jam nut with an open-end wrench and adjustable wrench to increase the assembly length
depending upon application. The supplied 15mm bolt should go through the engine side of the bracket, and the
Stiffy ™ should mount on the chassis side of the bracket. The supplied rubber o-ring is placed between the
Stiffy™ rod end and the supplied washer (smaller washers), which mounts against the bracket as shown in
Illustration 3. The Stiffy™ nuts are black in color, where all other supplied nuts are silver in color. The Stiffy ™
adjustment dials should be facing toward the Chassis Mounting Bracket. Note: Install bolts with bolt head on the
rod end side of the assembly and the locking nut (black in color) on the bracket side of the assembly. Refer to
illustration 3 for proper assembly of the mounting hardware. The nut and bolt can be swapped with the nut
against the bracket or rod-end depending upon application, but the washer and o-ring placement should not be
changed.

© Ingalls Engineering Co., Inc. ● 2011 Cherry Street, Suite 104 ● Louisville CO 80027

[phone] ● [phone] ● Fax: [phone] ● www.ingallseng.com

Illustration 1 Illustration 2 Illustration 3

Note: Proper use and fitment of the rubber O-ring helps dampen additional road noise or road “feel” that can be

transferred through the damper assembly. The o-ring should be used between the Stiffy™ rod end and washer for
optimal noise dampening. Dynamat or other dampening materials as used in the aftermarket stereo and in-cat
electronics industries can also be used to provide further noise and vibration dampening.

Note: Do not attempt to adjust Stiffy™ from its pre-set stiffness without consulting the Ingalls website. Large open­end wrenches are required to adjust stiffness. Most standard and mechanics tool kits do not include these types of
wrenches.

Subject to Disclaimer. All Ingalls products are warranted against defects in materials and workmanship for ninety (90) days from date of purchase. During the
warranty period, Ingalls will repair, or at its option replace at no charge, components that prove to be defective. The product must be returned, shipping prepaid,
to Ingalls facility. This limited warranty does not apply if the product is damaged by accident or misuse. The foregoing warranty is in lieu of all other warranties
expressed or implied including but not limited to any implied warranty of merchantability, fitness, or adequacy for any particular purpose or use. Ingalls shall not
be liable for any special, incidental or consequential damages whether in contract, tort, or otherwise resulting from the use or the inability to use the product.

Use of this product in competition, or use on vehicles altered from original manufacturer’s specifications or settings, EXPRESSLY VOIDS WARRANTY. The
user is urged to inspect for suspension binding or interference when the product is used in these manners. However, due to the varying conditions and manner
of use which the product will be subjected to in such uses, Ingalls Engineering Co., Inc. makes no warranties, either express or implied, including any warranty of
merchantability or fitness for a particular purpose for use in competition or with specifications or settings other than those specified by the original manufacturer’s
specifications.

Limited Warranty

Warranty Disclaimer

The Stiffy™ Engine Torque Damper

For more information on adjusting the Stiffy™ for your specific application,

please visit www.ingallseng.com

© Ingalls Engineering Co., Inc. ● 2011 Cherry Street, Suite 104 ● Louisville CO 80027

[phone] ● [phone] ● Fax: [phone] ● www.ingallseng.com

and click on the Stiffy™ page.