Two types of VTEC?
#1
Acura TL-S
Thread Starter
Join Date: Jul 2000
Location: NYC
Posts: 830
Likes: 0
Received 0 Likes
on
0 Posts
![Post](https://acurazine.com/forums/images/icons/icon1.gif)
I was looking over the link someone posted about the redline,and saw this:
DUAL STAGE INDUCTION SYSTEM >
The dual-stage induction system in the TL Type S adapts to the needs of the moment. As the engine speed exceeds 3,800 rpm, a butterfly valve opens, allowing air to rush into the combustion chamber. The positive-flow resonance is suddenly replaced by the charge condition with an airflow-accelerating, inertial charge condition. This forces a high volume of air into the cylinders, producing a natural "supercharger" effect that further broadens the torque curve.
and then VTEC:
VTECTM TECHNOLOGY >
Even the workings of the Acura VTEC™ system were adapted to meet TL Type S performance requirements. At a given engine speed, the intake rocker arms transition to actuation by high-lift, long-duration cam lobes. In the TL Type S, the activation threshold was raised to 4,800 rpm, and exclusive camshafts were introduced. These camshafts provide longer intake valve lift duration and more valve overlap to optimize power output in the TL Type S.
so it looks like we almost get the VTEC activation in two stages
kinda funky...
the actual acura link is: http://www.acura.com/model_types/tl_...pes_engine.asp
------------------
'02 Nighthawk TL-S
------------------
Comptech Springs
__________________
'00 Nighthawk TL
------------------
Aem Short Ram / Comptech Sway Bars / Comptech Springs / Cross-Drilled Rotors / Pirelli SP7000 Tires
-------------
Alpine CVA-1005 Head Unit / Alpine G320 EQ / Alpine DVA-5205 DVD / Alpine NVE-N851A Navi / JL Audio XR653-CS 3-Way comps for the front powered by a bridged Alpine MRV-F407 amp / Boston Acoustics 5.5 ProSeries 2-Way comps for the rear powered by Alpine MRV-1002 amp / Dual 10" JL Audio W-6 sub powered by Alpine MRV-1005 amp / Two Alpine CHA-1214 CD Changers
Pics of my TL and Fun/Crazy Pics
DUAL STAGE INDUCTION SYSTEM >
The dual-stage induction system in the TL Type S adapts to the needs of the moment. As the engine speed exceeds 3,800 rpm, a butterfly valve opens, allowing air to rush into the combustion chamber. The positive-flow resonance is suddenly replaced by the charge condition with an airflow-accelerating, inertial charge condition. This forces a high volume of air into the cylinders, producing a natural "supercharger" effect that further broadens the torque curve.
and then VTEC:
VTECTM TECHNOLOGY >
Even the workings of the Acura VTEC™ system were adapted to meet TL Type S performance requirements. At a given engine speed, the intake rocker arms transition to actuation by high-lift, long-duration cam lobes. In the TL Type S, the activation threshold was raised to 4,800 rpm, and exclusive camshafts were introduced. These camshafts provide longer intake valve lift duration and more valve overlap to optimize power output in the TL Type S.
so it looks like we almost get the VTEC activation in two stages
![](http://www.acura-tl.com/ubb/smile.gif)
the actual acura link is: http://www.acura.com/model_types/tl_...pes_engine.asp
------------------
'02 Nighthawk TL-S
------------------
Comptech Springs
__________________
'00 Nighthawk TL
------------------
Aem Short Ram / Comptech Sway Bars / Comptech Springs / Cross-Drilled Rotors / Pirelli SP7000 Tires
-------------
Alpine CVA-1005 Head Unit / Alpine G320 EQ / Alpine DVA-5205 DVD / Alpine NVE-N851A Navi / JL Audio XR653-CS 3-Way comps for the front powered by a bridged Alpine MRV-F407 amp / Boston Acoustics 5.5 ProSeries 2-Way comps for the rear powered by Alpine MRV-1002 amp / Dual 10" JL Audio W-6 sub powered by Alpine MRV-1005 amp / Two Alpine CHA-1214 CD Changers
Pics of my TL and Fun/Crazy Pics
#2
Senior Moderator
![Post](https://acurazine.com/forums/images/icons/icon1.gif)
Not really, the first thing you listed is the air intake system that the Type-S uses. The Valve timing isnt changed at all. Its just another thing Acura did to squeeze more ponies out of the car. It isnt VTEC.
------------------
Just call me..................Mr Hyde
TL Type-S Moderator
02 Aegean Blue TL Type-S with Navi(on the way)
Accord Forum Moderator/Honda-Acura.net
96 Sherwood Green Accord EX
------------------
Just call me..................Mr Hyde
TL Type-S Moderator
02 Aegean Blue TL Type-S with Navi(on the way)
Accord Forum Moderator/Honda-Acura.net
96 Sherwood Green Accord EX
Thread
Thread Starter
Forum
Replies
Last Post
IBankMouse
1G TSX (2004-2008)
8
06-13-2020 12:53 PM
justin.w13.walker
Car Parts for Sale
0
09-22-2015 02:21 PM