Rev Matching?

[Hamgumball]

If you rev match, you can shift without using the clutch. People should know how to do that, because what if your clutch or tranny goes out?

[2RotorMotor]

Originally Posted by Hamgumball

If you rev match, you can shift without using the clutch. People should know how to do that, because what if your clutch or tranny goes out?

Yes you can, which is what I was saying before... If your clutch gets fuked, then you have to revmatch... you can use revmatch to get into any gear other than 1st from a stop..

[dlux200sx]

Originally Posted by 2RotorMotor

Yes you can, which is what I was saying before... If your clutch gets fuked, then you have to revmatch... you can use revmatch to get into any gear other than 1st from a stop..

Should I be practicing shifting with no clutch then? Seems like it would be bad for my car.

another question, I'm a noob. When upshifting, is it better practice to release the clutch before I gas? Like, let the revs drop to match the next gear and release the clutch at the perfect timing, before I gas? Or is it better to gas a LITTLE bit while I'm releasing the clutch, so the revs don't overdrop (this is what I"m currently doing)?

What method would be best for longevity of the clutch and tranny?

[2RotorMotor]

Originally Posted by dlux200sx

Should I be practicing shifting with no clutch then? Seems like it would be bad for my car.

another question, I'm a noob. When upshifting, is it better practice to release the clutch before I gas? Like, let the revs drop to match the next gear and release the clutch at the perfect timing, before I gas? Or is it better to gas a LITTLE bit while I'm releasing the clutch, so the revs don't overdrop (this is what I"m currently doing)?

What method would be best for longevity of the clutch and tranny?

revmatching is definately not bad for the car, but I suggest that you use it how it was designed. So shift normaly and everything will go good.

How you do the shifting is left up to you. When upshifting, the revs drop anyways. I just shift normal without even thinking. Don't pay too much mind to that. It's not like it matters whether you keep the rev or let them drop..

[Hamgumball]

Originally Posted by dlux200sx

Should I be practicing shifting with no clutch then? Seems like it would be bad for my car.

another question, I'm a noob. When upshifting, is it better practice to release the clutch before I gas? Like, let the revs drop to match the next gear and release the clutch at the perfect timing, before I gas? Or is it better to gas a LITTLE bit while I'm releasing the clutch, so the revs don't overdrop (this is what I"m currently doing)?

What method would be best for longevity of the clutch and tranny?

You know how to shift perfectly in kinda a mathematical way? 8thgenuser posted something about this, but i'll clearify.

Drive in first to 25 mph, what rpm is that? Lets say its 3000.
Now drive in second to 25 mph, what rpm is that? Lets say 2000
So to upshift, while using rev matching, drive in first to 3000rpm, let go of the gas, push down the clutch and when it drops to 2000 rpms, you let go of the clutch and go. Now i guessed on the rpm's, so the actual rpms will vary.

You can do the same thing without using the clutch, just go to 3000 rpm, pull it in neutral, wait till it drops to about 2000 rpm and put it into second.

If you do it right, you will not hurt your car at all. And actually, you wouldnt be grinding gears, or wearing out your clutch so it might even be better than traditionaly shifting.

[ZOE]

Originally Posted by aznives3

i noticed that too, the brakes seem alot closer to the driver than the gas so it does take some practise, but after experimenting with it for a while, i heel-toe all the time down into 2nd now, and i realized that "blipping" the throttle doesn't work at all, you have to hold the gas pedal down for a little longer than you would usually to get the revs up to rise...it should solve the trick...

p.s. If you wonder why a short blip of the throttle wont raise the revs much, next time your sitting in your car parked and in neutral, smash the gas pedal to the floor really quickly and let go and do this as fast as you can....the revs will barely get up there!

I tired this out, you're right! i am beginning to think its due to the eletronic control (DBW?) its like lagging or something. kinda like playing a video game that doesn't listen to you lol.

this kinda pisses me off cause then its gonna be a bitch to hold the gas a little longer for the heel toe. i am not too good at it and i move the brake when i do it if i dun get it right. so you get all this jerk from bad clutch release and the brakes lol i need a sticker that says newb in training LOL

[BLU BY U]

um, if your clutch is fried....your not going to move regardless of any other variable.....besides a tow truck

[ttheisen93]

1. Use the clutch. No, really. Power shifting is great for a drag mustang, but not so hot for anything else. You're taking chances on killing your transmission by not using the clutch.
2. Rev matching is easier on your transmission than not rev matching, since you're smoothly moving into gears rather than having the wheels lurch your transmission and engine up to speed.
3. Double clutching along with rev matching is easier on your transmission because it doesn't require your synchros to do any work at all. You can feel this when you do it perfectly, because the stick almost seems to get pulled into the gear you're downshifting to.
4. Heel toe is a way to double clutch and rev match while braking for a turn. It involves braking with one part of your foot while blipping the throttle for the rev match/double clutch. This car seems to work best with my heel on the gas and my toe on the brake, but results may vary.
5. This car is kinda hard to blip for two reasons, one - the pedals are too small and far apart, two - it either has a heavy flywheel or its the way the throttle is mapped, because a blip on the throttle has a lot of lag before it actually happens.
6. Double clutch/heel-toe/rev match are essential for race driving for a couple of reasons: one - because if you're doing a corner at 10/10ths and you let the clutch out without rev matching, you're going to unload the rear tires and lose traction in the back, resulting in you backwards in the grass, two - some racing gearboxes are straight cut gears with no synchos, which are tremendously strong, but require double clutching to get the car in a lower gear.
7. A perfect 10/10ths corner done with rev matching/heel-toe/double clutch feels as good as sex.
8. To do it - brake with one part of your right foot, while pushing in the clutch with your left, put the transmission in neutral, let the clutch out, blip the throttle to the perfect revs with the other part of your right foot (your transmission is now at the right speed), put the clutch in and engage a gear (it should almost pull itself into the detent, you'll feel none of the normal resistance), let the clutch out, noticing the car didn't lurch at all either forwards or backwards, dial out steering and start leaning on the throttle.

Hope this helps!

[m1k3]

Originally Posted by Silver8th

So rev matching is basicly being in the right rpm range for that gear. Does that make sense? Because I don't get jerky shifts anymore. At first I was until I figured out the DBW and what rpm to shift at so it would't be jerky. Now its cake and every shift to another gear is smooth.

rev matching is easier on the car

[Yodums]

Alright. I have a couple of questions regarding this topic. I've never owned a manual car up to date and the car I just purchased will be my first manual car. Aside from that fact, I'm still capable of driving a manual transmission but obviously not as well as people who drive it on a regular basis.

1) Is this the process?

In 4th gear and coming upon a corner which I will take in 2nd gear.
Brake and clutch in
Shift to 2nd
Tap/blip the accelerator
Let go of the clutch and accelerate gradually

2) My second question is sort of an extension of my first question.

How do we know what RPM to blip/accelerate to while the clutch is in? Using the same scenario where I will go from 4th to 2nd. Say I'm travelling at 2000 RPM in 4th, how much do I set the RPM to before I release the clutch and engage the gear?

Thanks in advance.

[HybridRoninX]

If you don't rev match with shifting you tend to make the car heavily jolt instead of smoothly transition to the other gear.

[BLU BY U]

Originally Posted by HybridRoninX

If you don't rev match with shifting you tend to make the car heavily jolt instead of smoothly transition to the other gear.

which can wear down your clutch and is not exactly good for other drivetrain components.

[sonitex]

I find that shifting gears on the Si is like driving a race car. The Si is designed and built close to a racing car, the best sports car in its class. I enjoy driving it hard most times. Meaning to say that I use the engine braking a lot by down shifting thru the gears to slow down and or accelerate, ie from 6 to 5 to 4 to 3 down to 2nd and then finally use the brakes at that point if coming to a stop or leave it in second for cornering. I use the engine braking more than my brakes. Accelerating is even more smoother when reving the engine to 5k before shifting, and if I have the room in front, I like to kick in VTEC in third. Typically, when in the mood, and traffic conditions, I squeal the front tires in first, get a kick in the back in second, and scream the engine in third then I let it slow down to just above speed limits in town, in fourth. On the highway and speeds over fifty, is when I use the fifth in passing and the sixth for cruising with cruise control at around 80.

[6ft5inAllMan]

Originally Posted by sonitex

Typically, when in the mood, and traffic conditions, I squeal the front tires in first, get a kick in the back in second, and scream the engine in third then I let it slow down to just above speed limits in town, in fourth. On the highway and speeds over fifty, is when I use the fifth in passing and the sixth for cruising with cruise control at around 80.

Sounds like what I do.................

[taste]

Originally Posted by sonitex

I use the engine braking more than my brakes.

I hope your kidding!?!

Each set of components has their own specific job. Perhaps you could sell your unwanted break parts to the service department for a couple hundred $$.

Seriously though, I used to do that decades ago but it only serves to wear out more expensive parts than the one designed to do job. I would much rather buy a set of break pads than to have a clutch installed.

If your performance driving though, then by all means!

[Yodums]

I have a quick question, do you blip in neutral or can you shift into gear and blip?

Thanks.

[BLU BY U]

Originally Posted by Yodums

I have a quick question, do you blip in neutral or can you shift into gear and blip?

Thanks.

in neutral i push the clutch in, blip throttle and then select the right gear.

so ya, blip in neutral

[jc21]

Ok, I havn't been driving stick for very long but I have no problem with smooth shifts and what not. My questions are this.

What is "heel/toe" shifting and what is double clutching exactly. I think they might be one of those things that I do but I just never knew the word for it. Kinda like rev matching.

[HybridRoninX]

If I'm not mistaken heel/toe is used in aggressive cornering, specifically towards drifting where the heel of your foot is on the brake while the toe is on the gas for specific and advanced braking into shifting and immediate acceleration. I don't know exactly what the term of "double-clutching" is... Sorry.

[Gone]

Heel-toe shifting is used more when you are hard on the brakes and coming into a slower portion of the track or where ever you are driving and want to down shift. It essentially is rev matching while braking so that on corner entry, during cornering and on corner exit, you are always in your powerband. With the ball of your right foot, you get on the brakes and with the heel of your right foot you are manipulating the throttle all at the same time. I find that in the Si, its alot easier to just sidestep the gas instead of heel-toeing, but then again, I have big feet so I dunno. To each his own.

Double Clutching is pretty much pointless now. It was necessary way back when they didn't have syncros in trannys. When you wanted to shift, it required you to push in the clutch, move the shifter to neutral, release the clutch, blip the throttle, push in the clutch, select your gear and release the clutch. Kind of a pain, but it beat grinding gears and jerky shifts!