iceman1117

Does anyone know why this happens? I tried reving my car in a parking garage to hear how the intake and tanabe would sound and it didn't let me go passed 4,000 RPM or so. This is the first time I rev it while in park, I dont like abusing the engine so much. I appreciate your help in advance..Thanks.

CAIFAN_64

iTrader: (1)

reving the engine while park is one of the worst things you can do to your engine is not good

iceman1117

Yeah I know but I didn't want to drive fast in the garage to hear how it sounded. Trust me I will never do it again. I just wanted to know why it did this.

audi2nr

iTrader: (1)

most new cars have a neutral/ park rev limiter which is lower than the actual rev limiter so people dont do stupid crap like this, try putting your car in gear go like 5 mph then put it in neutral while rolling and rev it.

RocketGuy3

iTrader: (1)

I haven't really tried either yet, but why would it be worse to rev your car while in park (at full operating temperature) than while in neutral? The car isn't in gear either way, right?

And if you did it in neutral, what's the point of doing it while rolling at 5 mph rather than stopped with your foot on the brake?

audi2nr

iTrader: (1)

new audi a4 3.2 and audi a6 3.2's have the same rev limit function and i've tried this before, and rolling forward or having a load on the engine is the only way to get to rev past 3.5k 4.0k rpm. dunno if its the same for lexus, but its worth a try

llamaboiz

Why? Please elaborate. This more worse than when the car going down the road and the engine has to push the 36xx pounds of the car and you and the fluids in the car and push thru the air??? REALLY???

Oh please explain this.

CAIFAN_64

iTrader: (1)

It is not advisable to rev the motor in neutral either, in fact, it is
worse. Revving the engine can dump gas on the cylinder walls, which
increases engine wear and wastes gas.

While a little reving wont do anything, to much can. Did you know that just having an engine on idle (having the car on but not driving) is one of the worst things to do, it can cause the most harm to your engine. Well reving in idle is basicly the same thing only now your putting more work into your engine, hense being worse. Engines are built to withstand these things though, so again a little wont do much harm but a lot will.

sjgIS350

Get an RX8

fantom

Built in cut off rev limiter to protect you and limit Lexus warranty work.

iceman1117

Trust me I will never rev it again in park or neutral. You guys have my word on that lol. Thanks for all the help. Glad to know our cars have a rev limiter to prevent stupid things like this from getting worse.

t0e

iTrader: (1)

I dont think there is a rev limiter...

I have reved the car to redline before... Nothing stoped it

ben_r_

I havent tried that either... Its very bad though, dont do it anymore!

VikH

iTrader: (5)

A little revving won't hurt anything if the engine is warm. Since the car won't let you rev past 4k, its fine.

lobuxracer

iTrader: (2)

Revving the engine with no load puts tensile stress on the rods. Rods work fine when being compressed (under load) but don't like to be stretched (in tension). Many old school mechanics will tell you to never rev an engine with no load, and this is why. Modern engines are not nearly as sensitive to this, but it still isn't a good idea. While it is extremely unlikely to cause catastrophic failure the first time you do this, it is possible to stretch the rods permanently.

Also keep in mind there are any number of troubleshooting procedures that start with "run the engine at 2500 rpm for 120 seconds." So it's pretty clear Toyco is not worried about running the engine with no load at this speed continuously.