[home][rumors and news][model release matrix][dealer network][desktop calendar][exhaust notes][tov forums][links][search][sponsors][garage][login]

Tire Rack Upgrade Garage
 Search for a Dealer:
 Canadian Flag US Flag
 Honda Acura
 ZIP  
Acura
There are currently no active Acura promotions
Honda
There are currently no active Honda promotions
American Honda reports strong sales numbers for September 2017
More.......................
Honda will be showing a Sports EV Concept at the 2017 Tokyo Motor Show
More.......................
The 1.5T in the 2018 Accord has VTEC!
More.......................
Honda Urban EV Concept unveiled at the Frankfurt Motor Show
More.......................
American Honda Reports August 2017 Auto Sales
More.......................
Some Civic Type Rs are overheating on track
More.......................
Spied on the STREET! Next Gen RDX
More.......................
Acura Reveals Striking New Design for 2018 Acura RLX; Debut Set for Monterey Automotive Week
More.......................
General Talk --> Re: Do you wrench on your own car?
Join Discussion......
Accord --> Re: 2018 Honda Accord Reviews
Join Discussion......
General Talk --> Re: Kia Stinger - RWD
Join Discussion......
Photoshops --> Re: Accord Sport Wagon
Join Discussion......
Fuel Cell Technology --> Re: Station offline due to compressor issues
Join Discussion......
NSX --> Re: Where are the NSX road tests?
Join Discussion......
Today's Reading Links --> Re: 5,000 deaths annually from dieselgate in Europe
Join Discussion......
Fuel Cell Technology --> Re: updates on cracked windshield
Join Discussion......
Type R --> Re: Cheaper Type-R model on the way
Join Discussion......
Accord --> Re: Accord 2.0T vs Camry V6 - MT Oct 2017
Join Discussion......
General Talk --> Product Update: 2016 Pilot 9-Speed Transmission Warmer
Join Discussion......
Professional Motorsports --> Re: Honda PU
Join Discussion......
General Talk --> Re: Subaruing it in Seattle
Join Discussion......
General Talk --> Re: Why Honda Is Spending on a Shrinking Segment
Join Discussion......
Accord --> Re: C&D Test - Honda Accord 2.0T Touring 10AT
Join Discussion......
Jump to:
article details
Author Ryan Leecock
Categories TL
Create Date September 19, 2003 00:42
Last Update February 08, 2005 18:37
Suspension and Brakes

Overview

Part of the effort to reduce weight and improve handling, the 2004 TL incorporates an all aluminum-alloy subframe that holds the engine, transmission and lower suspension links.

At about 23 lbs (36 percent) lighter than before, the subframe is also more rigid and reduces NVH into the car.

Acura has paid attention to the engine and transmission mounts to make the car drive and idle smoothly. There are a pair of special fluid-filled Electronic Control Mounts which is connected to the hydroformed aluminum-alloy subframe. There is also a side mount that controls side to side motion. The 6MT adds a damper that reduces engine-rocking when during hard shifts or acceleration.





Front Suspension

  • The front suspension is a classic Honda upper and lower arm with coil-over shocks.
  • The upper arm is shorter in order to increase negative camber while cornering.
  • The 5AT gets beefy 25.4mm hollow front anti-sway bar and a 17mm solid rear bar. The sportier 6MT gets an even larger 27.2mm hollow front bar and 20mm solid rear bar.
  • There is a hollow steel bar across the shock towers to increase chassis solidity.



Rear Suspension

  • The rear suspension is a 5-link independent system with struts, coil springs and anti-squat and anti-lift geometry, and is mounted to a steel subframe to reduce NVH.
  • The rear suspension geometry adds "toe-in" when the suspension is compressed, improving handling stability over bumps and during hard cornering and braking.
  • A stabilizer bar further improves handling by limiting body roll, while a special "pillow joint" for the lateral links improves camber rigidity.
  • Rubber shims added to the leading and trailing arm bushings improve ride comfort.



Steering

  • The TL uses an engine-driven variable output pump (torque-sensing) to vary the amount of steering assist to ensure a medium effort at slow speeds and linear/firm feel at high speeds.
  • Hydraulic steering dampers built into the system further improve stability during cornering and at high speeds. A one-way kickback valve decreases kickback in the steering wheel that can be caused by road irregularities. The hydraulic valve closes when it senses road irregularities, impeding disturbances to the steering wheel.
  • Increasing the stiffness of the steering gearbox mounting and the rear sub frame also maximizes steering linearity.

Brakes

  • The 2004 TL has 4-wheel disc brakes with Electronic Brake force Distribution (EBD), Brake Assist, an Anti-lock braking system (ABS) and 4-channel Vehicle Stability Assist (VSA) including Traction control as standard equipment.
  • On the 5AT, the front brakes are ventilated cast-iron discs with single-piston calipers.
  • On the 6MT, Brembo rotors and aluminum-alloy front brake calipers are standard. The calipers have four pistons each, and more aggressive pad material. They are also 30 percent lighter than the standard calipers, saving 4.3 pounds per wheel.
  • Cooling air flows to the brakes through the front fender air duct ahead of the front wheels which reduces the brake temperature by 84F in high-demand fade tests.
  • The rear brakes are solid discs, gripped by single piston calipers.
  • A single 10-inch vacuum booster is used to reduce weight, increase stiffness and deliver more direct braking feel.
  • In both the automatic and manual transmission models, a hand parking brake is used instead of a foot brake.
  • Stopping distances from 60 mph have improved considerably from the previous TL Type-S. In internal testing the 2004 TL with all-season tires out-brakes the Lexus ES 300, and when equipped with high-performance tires the 2004 TL out-brakes the 2003 BMW 530i (also with high-performance tires).

Electronic Brake force Distribution

A new feature for TL is Electronic Brake force Distribution, which continuously and automatically adjusts the pressure distribution between the front and rear brakes depending on how the vehicle is loaded.

Brake Assist

The concept of brake assist was developed as a result of many people not braking with full force during an emergency situation. For example, the person may be small statured and is unable to physically apply the necessary pressure on the brake pedal. The system on the TL uses a microprocessor to learn the normal pressure applied by the driver. During an emergency or sudden hard braking situation, the system will detect that the brake pedal application speed and pressure thresholds have been exceeded. The system will then apply full ABS activation.

Like most brake assist systems, full braking is only used in emergency situations. Brake Assist will deactivate when pressure is slightly released from the pedal. The TL makes do with a 3 channel ABS where the front wheels are independently modulated, while the rear is done as a pair.

See which TOV Dealer Network affiliates are currently accepting pre-orders for the 2004 Acura TL.

[Next Page]

reader's comments
Click Here to Submit Your Comments

Viewing Threshold (What is this?)

[fancy] [flat] [simple]
Date Thread Starter Thread
10-01-2003 14:13 Wheels   (Score: 1, Normal) dnice
Jump to:
TOV First Drive: 2018 Honda Accord
Read Article....................
2018 Honda Accord Specifications and Features (FINAL)
Read Article....................
2018 Honda Accord Hybrid PR Photo Gallery
Read Article....................
2018 Accord Touring 2.0T PR Photo Gallery
Read Article....................
2018 Accord Touring 1.5T PR Photo Gallery
Read Article....................
2018 Honda Accord Sport 2.0T PR Photo Gallery
Read Article....................
Contact TOV | Submit Your Article | Submit Your Link | Advertise | TOV Shop | Events | Our Sponsors | TOV Archives
Copyright © 2017 Velocitech Inc. All information contained herein remains the property of Velocitech Inc.
The Temple of VTEC is not affiliated with American Honda Motor Co., Inc. TOV Policies and Guidelines - Credits - Privacy Policy