"Dumping the clutch" means revving the motor and letting the clutch out as fast as you can. 95% of the time, this is done at a standstill. There are a few nuts out there that will also do this while moving, usually to pop a wheelie on a motorcycle, get into a full power slide or smoke tires in a car.

-Wicked

 

dumping the clutch at any speed is abuse no matter how high rpms you do it at.

 

Dumping the clutch is perfectly safe if you rpm-match while rolling and shifting. Hell, I don't always use the clutch when I shift. Usually between 1/2 and 1/4. For some reason 3/4 doesn't always work out very well so I use the clutch for that.

I've seen people talk about double-clutching their WRX's - Why? That's done for old cars without schynos I thought. No point in doing it in today's cars, right?

-Wicked

 

Your clutch is going to last like another month... maybe.

This is the last thing you need to know but I will explain. Double clutching is done to try and accelerate more quickly. Basically, when you are accelerating you push the clutch in and out very quickly to jump up the RPM's before it goes back into gear. This is very very bad for the clutch and would probably be the same thing as dumping.

 

I guess people have different terms for the same thing. That is what has always been called in my small group of freinds. Obviously, we don't know everything about cars.

 

thats ok you guys were wrong. Now you can be the smart one and give all your friends the right info.

 

its kinda like double clutching when your downshifting to line the syncros up purfectly. all you have to do is line the rpm up purfectly with the speed of your tranny, pretty much
if you want to practice. if your in second gear coming to a light put it in nutural and rev the rpm's and lightly push the shifter into the first gear slot until the rpms are right and it will slide into first gear. it might be easier to do it from third to second. you should be able to do this to upshift or downshift. i could in my 240sx
i hope that this made sence.
steve

 

Double-clutching is universally defined as pushing in the clutch and letting it out TWICE per shift. I still do not see a valid reason to do this in a WRX or any modern day car as there are synchros in there that take care of lining things up properly from the get-go.

Downshifting without a clutch-
Let's say your motor is at 2,000 rpms and you want to go down one gear. You back off of the gas, shift the car out of gear and touch the gas enough to bring it up to... say, 3,000 rpms and shift it into the next lower gear. If 3,000 rpms was the correct motor speed for the next lower gear at the speed you were going on, it will pop right into that gear with no lurching, noise or grinding. Butter!:banana:

Upshifting without a clutch-

Same car, same gearing, same speed.
Motor's turning 3000 rpms and you want to upshift.
You shift the car out of gear.
you take your feet off of the gas, let the rev's drop to 2,000 rpms
Then you pop it into the next gear.
Like butter! :banana:

Every car is different, gearings are different, this takes serious skills. Not for the every day driver, I no longer do it these days because I'm not as well attuned to my cars anymore. Easier to just be lazy and use the clutch. Go ride with a real good driver and watch him or her shift. You'll be amazed.

-Wicked