Unknown Form Of Shifting!!!!!

I came across a form of shifting that is performed by shifting at a high rpm but holding down the gas while pushing the clutch. When done right, the rpms stay up and you don't lose speed. It's not power shifting or double clutching so what the fuck is it???!!!! It has to be done fast but carefully so you don't miss the gear and rev it so much that you'd probably blow the engine depending on your car. My friend does all the time with his mustang cobra(also doesn't know what it is)so I know it's possible. I even tried it with my honda but it didn't sound right. I have no clue to what kind of shifting this is or what damage it does to the engine. So if anyone knows PLEASE TELL ME!!!!!!!!!

I believe thats called power-shifting, and although it does make ya go a bit fast, its terrible for the tranny.

power-shifting....speed-shifting...and if he does this all the time, hes gonna need a new trans soon

power shifting is when you shift without using the clutch.........its posted somewhere

The form of shifting you are talking about is speedshifting that is wear you dont let off the gas and push in the clutch while putting it into the next gear, it damages the tranny alot but if you dont have a rev limiter like alot of us muscle car guys do, you will blow your motor. The other form of shifting that is a (drag) racing shift is power shifting, this is where you dont let of the gas also, but this time you dont use the clutch you just slam it into the next gear, this wont hurt the motor very much (unless you do it wrong and miss a shift) but it is hell on your tranny. Hope this helped you.

Nothing seems to be wrong with his car. Its actually in great condition considering its a 93' limited edition cobra with ONLY 9,000 MILES!!!!!!!!!!!!!

If he speedshifts (powershifts) All the time, the trans will not hold

when I said he does it all the time I meant during a race.

How often does he race?

i dont see how a car can hold up if you keep doing it, the tranny will crap out eventually, how much do you do it? like ho much do you race?

It's not exactly "unknown" and, as said, it's pretty damaging. It's commonly called powershifting

It's not exactly "unknown" and, as said, it's pretty damaging. It's commonly called powershifting

I call it powershifting and that is why they make dog-geared trannies for drag racers.

... If you do it right it's not damaging to your tranny, it'll just fall right into gear.

Most truckers don't use the clutch after 1st gear anyways. You just rev it it up and the shifter falls into place, it's just knowing where in the rev range to do it.

My friend could do it on his escort without grinding his gears. Of course, he screwed up a couple times trying to show me...

... If you do it right it's not damaging to your tranny, it'll just fall right into gear.

Most truckers don't use the clutch after 1st gear anyways. You just rev it it up and the shifter falls into place, it's just knowing where in the rev range to do it.

What your describing redneck is not what the first poster or I am talking about. First we are using the clutch and second we not trying to match rpms for the tranny.

Floor the gas then push the clutch down leaving the gas pedal slammed to the floor rip it into the next gear and pop the clutch up. This is what the first post sounds like the were describing. Which is far as I have always known it as powershifting. And is not good for a synchro style tranny.

Isn't powershifting also do-able in an automatic? Where is start in '1' and then manually slam it into '2' when the revs are high and so on?

I never recommend doing this without a shift kit cuz the gears don't move when you want them to in most cases.

But isn't this also called powershifting? If it's not, please tell me as i've been using the wrong term to describe this method of shifting an auto tranny.

from what I know it's not called power-shifting, like other people have posted power-shifting is when you up-shift without using the clutch.
I've never heard a name for the technique that u describe but it does mess up the tranny over time, I used to do it when I raced but eventually I stopped doing that because my cousin told me that it would mess up my tranny sooner or later.

Isn't powershifting also do-able in an automatic? Where is start in '1' and then manually slam it into '2' when the revs are high and so on?

I never recommend doing this without a shift kit cuz the gears don't move when you want them to in most cases.

But isn't this also called powershifting? If it's not, please tell me as i've been using the wrong term to describe this method of shifting an auto tranny.

you can't 'powershift' an automatic, but you can manually control the shift points using the low gear ranges on the selector. which does virtually nothing in a stock trans or one with a shiftkit. if you have a reverse manual valvebody on the otherhand, you must control the shifts one at a time when you're not in full automatic (drive). usually that's done with drag-race 3-speeds.

and just for reference, gears don't 'move' in an automatic trans... clutch packs, clutch bands, and sprags engage and disengage to control the planetary gears, a process controlled by electric or vacuum solenoids.

If you are talking about disengaging the clutch, shifting the transmission into the next gear, and then re-engaging the clutch once the tranny is in the next gear, it will not damage your transmission. It will mean your synchros will wear slighty faster, not by much, and that you will go through clutches twice as fast, since you ride your clutch with every shift.

if you have a reverse manual valvebody on the otherhand, you must control the shifts one at a time when you're not in full automatic (drive). usually that's done with drag-race 3-speeds.

Thank you for the info!


and just for reference, gears don't 'move' in an automatic trans... clutch packs, clutch bands, and sprags engage and disengage to control the planetary gears, a process controlled by electric or vacuum solenoids.

That one i DID know, but thanks for the reminder!

best way to shift for me anyways

let off the gas
push the clutch
kick the gas pedal once you're selecting the next gear
-> match rpms
clutch in

if you do this very fast, it's not only most gently for your clutch/tranny, it's also pretty impressive to see and feel for your passengers :)

plus you need mAd sKillz to do it fast and clean, eh?
makes you a better driver than just crunching your gears in.

The way I shift in my Audi TT is like so:
punch the clutch at the same time as letting off the gas, shift, floor it as letting off the clutch. If you get very good with your specific car's clutch and shifter, you can just sort of kick the pedal so the clutch is barely disengaged during the shift. The whole thing takes a fraction of a second. If you get really good, you can time it so the clutch becomes completely disengaged right at redline, so right when you hit redline your already moving the shifter into the next gear. Its very very quick, I'll take a video of it next time I'm out in the car. The TT is hard to get into 3rd though, so I miss that quite often... I don't race the car, so I never get past 4th, at that point I'm doing around 80mph.

well first of all, this is actually bad for turbo cars, by not letting off the gas you arent letting the pressure of the turbo out anywhere so its not going out of the blow-off valve. So in that case the compressor surges and just keeps building up too much pressure without releasing, therefore giving less air to the turbo, its has to suck in air and let it out between shifts

Uh.. Wrong. If you never close the throttle and hit hte clutch, there is no more load on the engine. No load on the engine = no boost. It just doesn't require the BOV to do anything, the boost will disappear.

At least it won't go down.

Close the throttle or let it open, it won't make a difference IF you have a BOV, boost goes out the window either way.

Right. The only time boost will do something bad is if you snap the throttle shut and don't have a BOV... if you keep the throttle open, everything will be fine. You'll lose boost, but that can't be avoided with a manual trans.

Correct...and landyacht what you described with the auto, my friends call 'ratchet shifting'...and what the first poster described...I like to refer to as 'expensive' and 'not the brightest thing to do'...but to each his own, and if you are trying to drop a tranny, then enjoy!

Its called powershifting

ok, if that's powershifting, what's the type of shifting called, when you shift without the clutch in?

ok, well i went out on one of the few last days of my L28et engine in my orange 240z and i was in first floored it and shifted to 2nd with the clutch but didnt let off the gas, BOV didnt go off so the load was still on and the turbo compressor surges, lost power, without letting off the gas the engine doesnt release pressure

Wait wait wait - do you have a boost guage? Could you actually tell us what the readings are when you hit the clutch? Because there is no reason for compressor surge. Less load on an engine and higher rpms and you get MORE boost? Somethin aint right there. What RPM does your turbo spool at? What RPM did the motor get up to when you shift? BOV not going off doesn't mean load is on the engine. It just means there is no pressure differential between the intake manifold and charge piping. An engine in neutral is not under load, even if its at WOT. You may be able to get it to throw a few psi, but definately not full spool unless you have a very small turbo on the motor.

when i was going my turbo starts spooling at 2500-3000 depending on how hard u punch it, i shifted at about 3500 and was boosting 7psi then kicked the clutch in revs went up to about 4000 before it got into second, if u keep the throttle pushed, it doesnt release the load at any time

power shifing