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      10-15-2009, 04:34 PM   #1
ATTFighter
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Wha is this called is it bad?

Ok so my friend taught me something today and i tried it and it seems to work.

Lets say I am in second gear with a WOT and when i get tto around 3,000 or 4,000 RPMS i quickly push in clutch and let go basically dump it while flooring the gas.... my wheels chirp but i feel like it gives me a boost??? is this just in my head or does it work and is it bad for the clutch?
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      10-15-2009, 08:25 PM   #2
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Quote:
Originally Posted by ATTFighter View Post
Ok so my friend taught me something today and i tried it and it seems to work.

Lets say I am in second gear with a WOT and when i get tto around 3,000 or 4,000 RPMS i quickly push in clutch and let go basically dump it while flooring the gas.... my wheels chirp but i feel like it gives me a boost??? is this just in my head or does it work and is it bad for the clutch?
It's very hard on the clutch, and I would not think it's faster at all. It only feels like it because you no longer accelerate when you push in the clutch, and then you get a big jolt when you dump the clutch at higher rpms.
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      10-15-2009, 08:26 PM   #3
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It's definitely in your head.
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      10-15-2009, 08:53 PM   #4
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my friend does this to build rpm on his s2k its defiantly not good for the clutch
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      10-17-2009, 08:16 AM   #5
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Quote:
Originally Posted by Andrew@EMS View Post
my friend does this to build rpm on his s2k its defiantly not good for the clutch
Exactly. It can be a useful technique in racing a car with a narrow powerband, like an S2K in coming out of a low-rpm turn for example, but our broad torque range negates the need.
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      10-17-2009, 04:42 PM   #6
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clutch repair isn't cheap. keep doing that and you'll find out how much real soon.
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      10-17-2009, 05:59 PM   #7
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You mean, you're still granny shifting and not double clutching like you should?

The Fast & The Furious FTW!
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      10-18-2009, 10:52 AM   #8
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Quote:
Originally Posted by Mega Man View Post
You mean, you're still granny shifting and not double clutching like you should?

The Fast & The Furious FTW!
F*cking funny. What the OP is describing is called double clutching BTW.
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      10-18-2009, 11:23 AM   #9
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double clutching is clutch, neural, gas, clutch, gear. Here he is saying that you keep it in gear and just stomp on the clutch and release with no throttle. This is still called Double-clutching?
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      10-18-2009, 11:32 AM   #10
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Quote:
Originally Posted by Jcrewsn View Post
double clutching is clutch, neural, gas, clutch, gear...
Blah, blah, blah...

"It doesn't matter if it's by an inch or a mile; double clutching is double clutching"

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      10-18-2009, 11:32 AM   #11
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This is called NRB (no real benefit), it's designed to chirp the tires while staying in the same gear. It is for adolescents to impress other adolescents, while putting additional stress and wear on all the drive components and wearing out the clutch.

It is not double clutching, as there is no gear change involved.
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      10-18-2009, 05:39 PM   #12
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It's called a "clutch pump". Comes from the drifting types, it's a way to break the tires loose.

Double clutching is used to match the speed of the transmission to the gear about to be engaged. It was used when transmissions did not have syncromesh.

A clutch pump does not increase your speed gain, it does greatly increase clutch wear.
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      10-18-2009, 10:07 PM   #13
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What they said ^^

Also, double clutching is only used when downshifting. You don't give a car gas to rev-match when shifting to a higher gear.

You also don't need to double-clutch in cars built in the last couple of decades, they have synchros to do the job for you (though you can definitely blip the throttle mid-shift to rev-match when downshifting).
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      11-19-2009, 03:18 PM   #14
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Good bye throwout bearing! You keep doing this, and you'll have ball bearings rolling around the bottom of your bell housing. This happened to me in my e36 325is way back when. The soapy surface of the car wash driveway, made my foot slip off the clutch violently... And voila..
I think the reason you feel a boost, is because your boost spikes up to max psi while you do this.
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      11-19-2009, 06:19 PM   #15
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Bad for the clutch...bad for the transmission, bad for the engine mounts. The stuff it is bad for are ALL very expensive to replace!
Bye the bye...I was a semi-profesional race car driver for 10 years and still do some teaching at track events. NEVER have I heard of anyone doing what you describe to go faster!
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      03-10-2010, 12:18 AM   #16
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Quote:
Lets say I am in second gear with a WOT and when i get tto around 3,000 or 4,000 RPMS i quickly push in clutch and let go basically dump it while flooring the gas...
The thought of doing this to my car almost makes me physically ill.

Kids these days...

ianc
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      03-10-2010, 02:33 AM   #17
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Quote:
Originally Posted by Timberwolf View Post
I think the reason you feel a boost, is because your boost spikes up to max psi while you do this.
You're not building boost because you aren't under any load. If you stood on the brake and gas with the clutch OUT, you would be building boost. Brake boosting lol.
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Last edited by HondaGoneRogue; 03-15-2010 at 07:39 PM..
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      03-15-2010, 03:13 PM   #18
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brake boosting ftw
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      03-15-2010, 03:40 PM   #19
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What everyone else said... bad, bad ju-ju!
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