S2000 Talk Discussions related to the S2000, its ownership and enthusiasm for it.

How to fix a little jerkiness right after shift?

Thread Tools
 
Old Mar 13, 2009 | 11:11 PM
  #1  
megathunder's Avatar
Thread Starter
Registered User
 
Joined: Oct 2008
Posts: 323
Likes: 0
From: Redondo Beach
Default How to fix a little jerkiness right after shift?

Lately right after I've been shifting it feels like the tranny, gearbox, or whatever it is goes a little herky-jerky for a quick second or two until I get into the throttle. What's wrong with my technique? I self-diagnosed and fixed my first problem which was the lurching of the car right before shifting - caused by getting off the gas too fast before the clutch went in. So now I ease in the clutch as I ease out the gas, but now after I'm done shifting and I have the car in gear often I get a little bobbing.

Anyone know what I can try?
Reply
Old Mar 14, 2009 | 04:28 AM
  #2  
Salmoon's Avatar
Registered User
 
Joined: Nov 2008
Posts: 592
Likes: 0
Default

Just different shifting styles. the higher the RPM, the more they will want to drop when you shift. If you don't want any bumpiness, you'll have to revmatch and apply gas evenly. Otherwise, I think the bumpiness you feel is the clutch being let out and the rpms being adjusted.
Reply
Old Mar 14, 2009 | 05:39 AM
  #3  
s98d7fs's Avatar
20 Year Member
 
Joined: Dec 2005
Posts: 669
Likes: 0
From: Cary, NC
Default

The idea is to have the speed of your gearshift and clutchwork match the amount of time it takes for the RPMs to approach the range they would be in the next gear.

The next issue is applying the correct amount of throttle for the amount of acceleration you want, but still factoring in that you need to engage the clutch first then apply the throttle full on.

Remember too, that the factory clutch is not "full on, full off". Depending on how you're driving at the time, you can slip the clutch to smooth the shift if the RPMs are higher than they need to be. Obviously this slippage occurs for just a fraction of a second though.

Taking everything into consideration and "working it" takes a little time to get right.
Reply
Old Mar 14, 2009 | 11:31 AM
  #4  
megathunder's Avatar
Thread Starter
Registered User
 
Joined: Oct 2008
Posts: 323
Likes: 0
From: Redondo Beach
Default

Thanks guys, I guess I'll just keep working at the clutchwork and maybe if I shift faster with the lower gears the shakes will go.
Reply
Old Mar 14, 2009 | 12:06 PM
  #5  
rocrfella's Avatar
Registered User
 
Joined: Aug 2007
Posts: 678
Likes: 1
Default

you replease the clutch too fast!
Reply
Old Mar 14, 2009 | 12:58 PM
  #6  
negcamber's Avatar
Former Moderator
 
Joined: Jul 2001
Posts: 8,821
Likes: 5
From: Jacksonville, FL
Default

Don't jerk on the wheel when shifting...

Also...check your tire pressures. The right side should match the left side psi...more than 2-3psi difference between right & left can cause the s2k to jerk a bit. Also make sure the pressure at the rear is at least 28psi...as it gets lower the car can also dance a bit.
Reply
Old Mar 14, 2009 | 03:15 PM
  #7  
a_zepeda926's Avatar
Registered User
 
Joined: Aug 2006
Posts: 887
Likes: 0
From: Anaheim, CA
Default

Originally Posted by rocrfella,Mar 14 2009, 01:06 PM
you replease the clutch too fast!
yea i would say you may be releasing it too fast.

its all timing, so just mess around with it and eventually youll find the sweet spot.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
mzk784
S2000 Racing and Competition
6
Oct 9, 2007 07:08 AM
asdfg123hk
Vancouver BC S2000 Owners
6
Jun 23, 2005 07:47 AM
asdfg123hk
S2000 Talk
9
Jun 17, 2005 07:10 AM
emrillive
S2000 Talk
11
Oct 9, 2004 06:12 PM
FormerH22a4
S2000 Talk
2
May 26, 2002 05:52 AM




All times are GMT -8. The time now is 12:22 AM.