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Clutch Jerk Issue

Grey
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Grey Community Regular

Grey

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Hi I'm a new manual driver, but my dad drove the car and he had the same problem. I just received my car that I had bought last week for the first time, it's a nissan skyline R34 25GT coupe with manual transmission. So this is what happens, gear 1 fine, rev it to 3000 rpm, change gear to gear 2, release the clutch, JERK, then smooth then rev it up to 3000 rpm again, change to gear 3, release clutch, JERK. Now I've experimented with this a little bit, when I slowly release the clutch, the jerking is quite minimized to an extent where sometimes there is no jerk. The jerk feels like it pulls you back for a split second, then you are running smooth again.

Any ideas to how I can smoothly / consistently change gears rapidly without this jerking problem? Or is it entirely about the transmission?

Help appreciated!

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The Dan Grand Master

The Dan

Posted
Posted

Hi I'm a new manual driver, but my dad drove the car and he had the same problem. I just received my car that I had bought last week for the first time, it's a nissan skyline R34 25GT coupe with manual transmission. So this is what happens, gear 1 fine, rev it to 3000 rpm, change gear to gear 2, release the clutch, JERK, then smooth then rev it up to 3000 rpm again, change to gear 3, release clutch, JERK. Now I've experimented with this a little bit, when I slowly release the clutch, the jerking is quite minimized to an extent where sometimes there is no jerk. The jerk feels like it pulls you back for a split second, then you are running smooth again.

Any ideas to how I can smoothly / consistently change gears rapidly without this jerking problem? Or is it entirely about the transmission?

Help appreciated!

You and your father may not be used to the engage point of the clutch so you are letting it out quickly without having revs to match it. If the car has a factory clutch fitted, it should be quite smooth. If it has a button clutch (which it probably wouldn't) or if the flywheel was lightened, then maybe clutch related. Otherwise, I think maybe getting used to it a little more might help. Obviously it's hard to work out what you mean from a description online but if it keeps it up, take it somewhere so someone experienced can drive it and feel for themselves

turboedsloth Grand Master

turboedsloth

Posted
Posted

Hi I'm a new manual driver[/b

This is your problem mate. You shouldn't try and slip it, that just makes it die sooner rather than later. Give it a week and you'll be driving it like a champ

zoidbergmerc Mentor

zoidbergmerc

Posted
Posted

Practice makes perfect.

Be confident, but not forceful with your gear changes.

Match the revs to the gear you're selecting, then quickly but smoothly release the clutch.

Learn where the catch point is, it does take a while.

If what you say is true and you're being pushed back into the seat (sudden acceleration) when you change gears you might be leaving your foot on the throttle a little bit when you've got the clutch in.

But again, practice, just find a nice loop of quiet road and cruise around until you get the hang of it!

Good luck. cheers.gif

Birds Grand Master

Birds

Posted
Posted

You can slip a factory organic clutch, they are made to be slipped. But you shouldn't have to if you match the revs correctly. Remember to apply a little throttle to bring the revs back up for the next gear...they're obviously falling too far during gear change. You will get used to it anyway, as you'll start to learn what RPM you need to be at for the next gear to dis-engage the clutch smoothly.

Another possibility, if there is actually a problem with it, is the clutch pivot ball could be worn and causing the pressure plate to release in a non-smooth motion. More than likely the first scenario though, you just need to get used to it. Skylines aren't the friendliest of cars to learn manual in, particularly if it's turbo.

SargeRX8 Grand Master

SargeRX8

Posted
Posted

Stay VERY lightly on the accelerator when shifting and it will make a big difference. When my car is cold, my shifting is shit and I occasionally almost stall. Once I'm warm, its smooth sailing.

What is f**king annoying is bumpy roads and your foot goes TAP TAP TAP on the damn accelerator!

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