dbox

sitting in my car waiting for my GF last night i was playing around a bit...

i rev'd the engine just to hear the sweet sound and it wouldnt go past 5250rpm. all it would do is bounce off of 5250rpm. i was in P if that matters at all. when i drive the car it will redline every gear. so why only 5250rpm at a stand still?

spdy0001

You can't engage V-TEC unless you are in a forward gear

SilverKnight

cuz that's how it is. It's designed that way to protect the engine.

chikai

it's to prevent drivers accidentally stepping on the gas pedal in a stand still and blowing up the engine. Pretty much a safety feature.

blackmagiCL_S

huh. You learn something every day! That makes sense though.

I am RobG

its called a rev limiter, so this way when you're sitting in park and you're revving your engine you can't bring it to like 8grand and do some nice damage...and you can hit vtec when the car isn't moving cuz my rev limiter is at 58ish and you can clearly hear the vtec, i also have a 6spd

allmotor_2000

I don't think that is the case... maybe I am wrong with the automatics, but in my 6spd, I can take it to 7200 RPM in neutral!

Nashua_Night_Hawk

Oh please are you going to drop the clutch from 7000 rpm?

dbox

i figured it was a limiter but i have never heard of this being in any other car. i just wanted to make sure nothing was wrong...

prelude9925

my 99 prelude was the same way. Redlined at 8 grand but wouldnt engage vtec if in park. Not sure why it would matter to anyone though.

JakeCL

when i have the clutch in at a stop i know i cant rev past 5 k or so but if i let it roll forward a bit then put the clutch back in and rev it it lets me go all the way up, im not sure about neutral ill try it today

allmotor_2000

With slicks... sure!

tdtsai

It's designed to prevent some fools who may overrev and damage the engine. Heh heh

EricL

As described above, this is normal.

You have the ability to "slew" (change the revs rather quickly), in neutral and park without a "connected" load (1st, 2nd, etc) to limit the change in revs/sec (slew). There is also torque converter -- in the case of the automatic -- hanging on to the crank (it's along for the ride). When the car is in "gear", the torque converter is basically absorbing the energy (engine side moving, tranny side/internals are NOT moving).



"5-Speed Sequential Sportshift Automatic Transmission (back to top)
The TL's transmission offers tremendous weight savings over the previous-generation TL transmission. Almost a third lighter, the Direct Control AT is the most significant factor in the new TL's reduced drivetrain weight. More important to the TL's driver is the new transmission''s refined feel and quick response. With a 16-bit, 20 MHz Electronic Control Unit (ECU) directly controlling transmission operation in concert with the engine management system, linear solenoids provide precise, real-time control of the clutch on/off pressure in the TL's transmission. With superior clutch engagement accuracy, the sophisticated control logic system operates smoothly under all conditions.

Working in concert with this system is a canceler mechanism built into the first and second gear clutches that "cancels" out the detrimental effects of rising fluid pressure caused by centrifugal force–assisting in precise clutch control.

Multiple safety and control strategies use interaction between engine and transmission controllers to manage overall powertrain operation. By limiting engine output torque and/or transmission clutch pressure, sharp driveline shocks are eliminated, and the engine is prevented from exceeding 5000 rpm in Neutral and Park...."

http://www.honda.ca/AcuraEng/Models/...ion=Powertrain

dbox

pretty damn informative! thanks...

Loseit

iTrader: (1)

my question is....


Why in god's name where you revving that high in P in the first place? Your girlfreind get turned on by stuff like this?