Notices
Maintenance & Repair 350Z up keep and diagnosing/fixing problems

Z is grinding on 3rd and 4th gear when I power shift

Thread Tools
 
Search this Thread
 
Old 11-12-2012, 09:31 AM
  #1  
soulfulstrum131
Registered User
Thread Starter
 
soulfulstrum131's Avatar
 
Join Date: Aug 2012
Location: San Francisco
Posts: 18
Likes: 0
Received 0 Likes on 0 Posts
Default Z is grinding on 3rd and 4th gear when I power shift

hey,

so I bought my Z used, and when I bought it, the guy told me the 3rd and 4th gear grind when you power shift. I was wondering how would I go to fixing it. Many people have told me it was my tranny, and I need to replace it, others say it's my clutch, and or flywheel. any ideas?!
Old 11-12-2012, 09:58 AM
  #2  
SQuaLZ
New Member
 
SQuaLZ's Avatar
 
Join Date: Jul 2009
Location: New York
Posts: 3,382
Received 116 Likes on 90 Posts
Default

Why do you need to powershift? Powershifting is the worst thing for your clutch and tranny.
Old 11-12-2012, 10:14 AM
  #3  
Cux350z
hatersgonnahate
Premier Member
iTrader: (162)
 
Cux350z's Avatar
 
Join Date: Apr 2005
Location: Greenville, SC
Posts: 15,060
Received 1,028 Likes on 785 Posts
Default

Thought powershifting was sans clutch. Its your tranny syncros going to crap.
Old 11-12-2012, 11:12 AM
  #4  
terrasmak
Super Moderator
MY350Z.COM
Premier MemberSuper Moderator
iTrader: (8)
 
terrasmak's Avatar
 
Join Date: Jan 2007
Location: Sin City
Posts: 28,775
Received 2,333 Likes on 1,681 Posts
Default

Originally Posted by SQuaLZ
Why do you need to powershift? Powershifting is the worst thing for your clutch and tranny.
Exactly, I don't even power shift on the race track. Smooth is the key.
Old 11-12-2012, 11:58 AM
  #5  
mknZ
Registered User
 
mknZ's Avatar
 
Join Date: May 2009
Location: arcola IL
Posts: 277
Likes: 0
Received 0 Likes on 0 Posts
Default

Double clutching is the way to go!
Old 11-12-2012, 02:26 PM
  #6  
scotts300
350Z-holic
iTrader: (46)
 
scotts300's Avatar
 
Join Date: Aug 2003
Location: Away
Posts: 8,193
Received 7 Likes on 6 Posts
Default

Originally Posted by soulfulstrum131
hey,

so I bought my Z used, and when I bought it, the guy told me the 3rd and 4th gear grind when you power shift. I was wondering how would I go to fixing it. Many people have told me it was my tranny, and I need to replace it, others say it's my clutch, and or flywheel. any ideas?!
Don't power shift.
Old 11-12-2012, 02:35 PM
  #7  
cmcurran5
New Member
iTrader: (4)
 
cmcurran5's Avatar
 
Join Date: Sep 2010
Location: massachusetts
Posts: 1,560
Likes: 0
Received 4 Likes on 2 Posts
Default

do what brian does and start granny shifting..

Old 11-12-2012, 03:14 PM
  #8  
pss350z
Registered User
iTrader: (6)
 
pss350z's Avatar
 
Join Date: Aug 2005
Location: ontario, canada
Posts: 830
Received 1 Like on 1 Post
Default

Originally Posted by soulfulstrum131
hey,

so I bought my Z used, and when I bought it, the guy told me the 3rd and 4th gear grind when you power shift. I was wondering how would I go to fixing it. Many people have told me it was my tranny, and I need to replace it, others say it's my clutch, and or flywheel. any ideas?!
I would have stayed away from a car who's owner admitted to powershiting and screwing up the syncros (grinding when power shifting) as a result of his powershifting. Hopefully you got a smokin deal.
Old 11-12-2012, 04:34 PM
  #9  
soulfulstrum131
Registered User
Thread Starter
 
soulfulstrum131's Avatar
 
Join Date: Aug 2012
Location: San Francisco
Posts: 18
Likes: 0
Received 0 Likes on 0 Posts
Default

i thought power shifting was shifting really fast....idk man i got a dope *** deal on my le mans orange Z
Old 11-12-2012, 04:38 PM
  #10  
soulfulstrum131
Registered User
Thread Starter
 
soulfulstrum131's Avatar
 
Join Date: Aug 2012
Location: San Francisco
Posts: 18
Likes: 0
Received 0 Likes on 0 Posts
Default

well it doesnt crank when i shift smoothly. I dont power shift, just when i shift faster than usual.
Old 11-12-2012, 04:54 PM
  #11  
Cux350z
hatersgonnahate
Premier Member
iTrader: (162)
 
Cux350z's Avatar
 
Join Date: Apr 2005
Location: Greenville, SC
Posts: 15,060
Received 1,028 Likes on 785 Posts
Default

http://en.wikipedia.org/wiki/Powershifting
Old 11-12-2012, 04:54 PM
  #12  
mr. sparco
New Member
iTrader: (13)
 
mr. sparco's Avatar
 
Join Date: Dec 2005
Location: Sunny Beaches
Posts: 7,086
Received 454 Likes on 318 Posts
Default

Driving a car is like a dance, shifting prematurely (fast) is what kids do. You shift, let go of the clutch quick enough that it's before everything is in sync. Listen to all the track guys who posted, like scotts300 and terrasmak.
Old 11-12-2012, 05:21 PM
  #13  
JCat
---------------
Premier Member
iTrader: (4)
 
JCat's Avatar
 
Join Date: Mar 2004
Location: JC in Atlanta Georgia
Posts: 3,987
Received 73 Likes on 48 Posts
Default

At highway speeds, push in the clutch and hold it down.

Shift from 3 to 4 to 5 to 6th. If it grinds between any gear, your synchros are shot.
Old 11-12-2012, 07:09 PM
  #14  
oldschool350z
Registered User
iTrader: (1)
 
oldschool350z's Avatar
 
Join Date: May 2012
Location: NY
Posts: 2,513
Likes: 0
Received 9 Likes on 9 Posts
Default

Synchros are gone, best solution is a new tranny.

Rebuilding the current one is going to be too costly and I'm sure more synchros are worn then just the one you know.
Old 11-13-2012, 01:07 PM
  #15  
0jiggy0
New Member
iTrader: (13)
 
0jiggy0's Avatar
 
Join Date: Aug 2008
Location: Long Island, NY
Posts: 7,418
Received 12 Likes on 12 Posts
Default

Originally Posted by soulfulstrum131
i thought power shifting was shifting really fast....idk man i got a dope *** deal on my le mans orange Z
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
MM'08_350Z
VQ35HR
225
04-22-2021 09:42 PM
sherm
Engine & Drivetrain
15
04-11-2020 05:21 PM



Quick Reply: Z is grinding on 3rd and 4th gear when I power shift



All times are GMT -8. The time now is 03:45 PM.