Probably a dumb/noob question..

370Z Purist · 07-06-2009, 01:58 AM

Quote:

Originally Posted by Crash

OK... First off, this method of keeping the throttle more than 0% is called "No-Lift Shifting" AKA "Power Shifting".

This is easily done on cable-driven throttle bodies and on some newer cars with electronic "Fly-By-Wire" throttle bodies. I believe all cars since 2005 are fly-by-wire. For example, on my 2007 Solstice, you cannot power shift. The throttle body automatically closes if you try to power shift. But newer models now allow this.

With the syncrorev matching system on with the 370z, I wouldn't attempt this. With it off, I'm sure it's possible.

Sounds like bad shifting in general, like flatfoot shifting (same thing?)... but it is possible, although without a strong clutch or tranny (or both), something might break. If not those two, possibly a torque sensing diff or a bad driveshaft, even the connections, could break. But that also means in a car with high torque curves (linear like our Zs), you can basically chirp the tires constantly up to 2nd or 3rd gear. Pretty insane.

mcphelps · 07-06-2009, 09:54 AM

Quote:

Originally Posted by 370Z Purist

Sounds like bad shifting in general, like flatfoot shifting (same thing?)... but it is possible, although without a strong clutch or tranny (or both), something might break. If not those two, possibly a torque sensing diff or a bad driveshaft, even the connections, could break. But that also means in a car with high torque curves (linear like our Zs), you can basically chirp the tires constantly up to 2nd or 3rd gear. Pretty insane.

It's actually an advertised feature of the turbocharged Cobalts and HHRs. It keeps the turbo spooled up between shifts. I think it basically amounts to a secondary rev limiter.

Island_370 · 07-06-2009, 12:33 PM

Quote:

Originally Posted by Crash

OK... First off, this method of keeping the throttle more than 0% is called "No-Lift Shifting" AKA "Power Shifting".

This is easily done on cable-driven throttle bodies and on some newer cars with electronic "Fly-By-Wire" throttle bodies. I believe all cars since 2005 are fly-by-wire. For example, on my 2007 Solstice, you cannot power shift. The throttle body automatically closes if you try to power shift. But newer models now allow this.

There is an aftermarket piggy-back kit that can allow for this (drive by wire only). You can program the delay for your normal shift time. When the clutch is engaged, the piggy-back reduces the throttle and then goes back to WOT after the programmed delayed. It is more beneficial for a turbo car because you can have the system keep the boost on....or at least help keep the turbo spooled. For an NA car, it just seems like being lazy.

EDIT----The piggy-back pulls ignition, not throttle. Oppss.... Here is the link....
http://www.npcompleteperformance.com/wotbox

GreenJalapeno · 07-06-2009, 02:10 AM

maybe you should try perfect shifting? :P Its actually pretty easy.. you shift without pushing the clutch in. No grinding, no problems (if you do it right that is)

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AK370Z · 07-06-2009, 04:24 AM

Quote:

Originally Posted by GreenJalapeno

maybe you should try perfect shifting? :P Its actually pretty easy.. you shift without pushing the clutch in. No grinding, no problems (if you do it right that is)

What's up with the face painting? Is it part of the "Perfect Shifting"?

370Z Purist · 07-06-2009, 02:11 AM

That's dangerous if you're not perfect... a friend of a friend can do it in his Supra. It's risky, for sure.

GreenJalapeno · 07-06-2009, 02:19 AM

hahaha i can do it in my old car

it was taught back in the day, in case your clutch lines failed.

370Z Purist · 07-06-2009, 02:21 AM

Quote:

Originally Posted by GreenJalapeno

hahaha i can do it in my old car

it was taught back in the day, in case your clutch lines failed.

That would definitely come in handy. Although, clutch line failing is just negligence in road use. Maybe if you were racing...

GreenJalapeno · 07-06-2009, 02:24 AM

Quote:

Originally Posted by 370Z Purist

That would definitely come in handy. Although, clutch line failing is just negligence in road use. Maybe if you were racing...

yes this is a forgotten skill within modern day manual drivers. Although failing clutch lines are highly unlikely, it is always good to know .. just in case :P

370Z Purist · 07-06-2009, 02:26 AM

You can always hoof it and push the car.... hahahhaha
A good workout for da thighs, hahaha

GreenJalapeno · 07-06-2009, 02:29 AM

yea, up until you hit a 1% grade or more. hahaa

370Z Purist · 07-06-2009, 02:35 AM

Oh man... I just tried to push the Z up a small grade, my driveway. Just for fun. Took 3 guys to get it rolling, and to keep it rolling, two guys. I'd never want to die of a bad clutch line. Maybe I'll learn this perfect shifting so I can show off if I want. :

:

GreenJalapeno · 07-06-2009, 02:38 AM

hahahahah practice it in another car first please

370Z Purist · 07-06-2009, 02:39 AM

Definitely a good idea. ... yeah, definitely. LOL

Crash · 07-06-2009, 04:10 AM

Perfect shifting is pointless, IMO.

There's a clutch for a reason. And the clutch gives you more control.

I power shift when I'm racing. I haven't broken anything yet. But who knows? I may break something at some point. I'm pretty hard on the trans and diff. Power shifting or not, I'm pretty brutal on the shifter. I pretty much shift like the car is disposable.

07-06-2009, 02:10 AM	#4 (permalink)
GreenJalapeno Enthusiast Member Join Date: May 2009 Location: La Canada Flintridge Posts: 355 Drives: 10 Nissan 370Z PW M6 Rep Power: 292	maybe you should try perfect shifting? :P Its actually pretty easy.. you shift without pushing the clutch in. No grinding, no problems (if you do it right that is) &fs=1" width="644" height="390">&fs=1" />">http://www.youtube.com/watch?v=

07-06-2009, 02:11 AM	#6 (permalink)
370Z Purist A True Z Fanatic Join Date: Jun 2009 Location: Zion, Illinois Posts: 1,873 Drives: '09 370Z-T BS M6 Rep Power: 20	That's dangerous if you're not perfect... a friend of a friend can do it in his Supra. It's risky, for sure. __________________ -Phil "Since one of my brake light bulbs just went out, the forum told me that my piston rings are about to blow."

07-06-2009, 02:26 AM	#10 (permalink)
370Z Purist A True Z Fanatic Join Date: Jun 2009 Location: Zion, Illinois Posts: 1,873 Drives: '09 370Z-T BS M6 Rep Power: 20	You can always hoof it and push the car.... hahahhaha A good workout for da thighs, hahaha __________________ -Phil "Since one of my brake light bulbs just went out, the forum told me that my piston rings are about to blow."

07-06-2009, 02:35 AM	#12 (permalink)
370Z Purist A True Z Fanatic Join Date: Jun 2009 Location: Zion, Illinois Posts: 1,873 Drives: '09 370Z-T BS M6 Rep Power: 20	Oh man... I just tried to push the Z up a small grade, my driveway. Just for fun. Took 3 guys to get it rolling, and to keep it rolling, two guys. I'd never want to die of a bad clutch line. Maybe I'll learn this perfect shifting so I can show off if I want. :: __________________ -Phil "Since one of my brake light bulbs just went out, the forum told me that my piston rings are about to blow."

07-06-2009, 02:39 AM	#14 (permalink)
370Z Purist A True Z Fanatic Join Date: Jun 2009 Location: Zion, Illinois Posts: 1,873 Drives: '09 370Z-T BS M6 Rep Power: 20	Definitely a good idea. ... yeah, definitely. LOL __________________ -Phil "Since one of my brake light bulbs just went out, the forum told me that my piston rings are about to blow."

07-06-2009, 02:19 AM	#7 (permalink)
GreenJalapeno Enthusiast Member Join Date: May 2009 Location: La Canada Flintridge Posts: 355 Drives: 10 Nissan 370Z PW M6 Rep Power: 292	hahaha i can do it in my old car it was taught back in the day, in case your clutch lines failed.

07-06-2009, 02:29 AM	#11 (permalink)
GreenJalapeno Enthusiast Member Join Date: May 2009 Location: La Canada Flintridge Posts: 355 Drives: 10 Nissan 370Z PW M6 Rep Power: 292	yea, up until you hit a 1% grade or more. hahaa

07-06-2009, 02:38 AM	#13 (permalink)
GreenJalapeno Enthusiast Member Join Date: May 2009 Location: La Canada Flintridge Posts: 355 Drives: 10 Nissan 370Z PW M6 Rep Power: 292	hahahahah practice it in another car first please

07-06-2009, 04:10 AM	#15 (permalink)
Crash A True Z Fanatic Join Date: Dec 2008 Location: Los Angeles Posts: 1,853 Drives: 02 Corvette Z06 Rep Power: 590	Perfect shifting is pointless, IMO. There's a clutch for a reason. And the clutch gives you more control. I power shift when I'm racing. I haven't broken anything yet. But who knows? I may break something at some point. I'm pretty hard on the trans and diff. Power shifting or not, I'm pretty brutal on the shifter. I pretty much shift like the car is disposable. __________________ 2002 Corvette Z06 - Totaled 2003 Corvette Z06 50th Anniversary

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