tranny problem

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Sep 18, 2010 | 01:26 PM

silver_z06

Thread Starter

Racer

Joined: Nov 2005

Posts: 445

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From: san jose california

tranny problem

I have an 02 Z06 and my 4th is starting to grind, i shift gears at around 2500 to 3200, 1st 2nd 3rd 5th and 6th go in smoothly with no problems but my fourth when I try to shift at that rpm range always grinds I have to wait for the rpms to drop to 1300 or maybe less in order for that gear to go in smooth, another thing I noticed was that I can downshift from 5th to 4th at high rpms and it doesnt grind, so basically 4th gear grinds when shifting from 3rd to 4th at mid rpms or higher but I can downshift to 4th at any rpm range, any idea what this might be

Sep 18, 2010 | 02:10 PM

dgrant3830

Tech Contributor

Joined: Dec 2006

Posts: 10,962

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From: Van Buren Arkansas

Wounded Warrior Escort '11

Always try the shifter alignment procedure which is fast and easy to do. Past that, sounds like the synchros are worn out.

Sep 18, 2010 | 03:12 PM

Paul 75 L82

Le Mans Master

Joined: Dec 2000

Posts: 5,245

Likes: 25

From: Blue Ridge Georgia

I had the same problem with my 5th gear, drove it a year like that. Just installed a new trans this week, sure is nice.

Sep 18, 2010 | 03:47 PM

lomoman

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Joined: Sep 2006

Posts: 80

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From: Nassau NY

trans grind

Have same problem with M6 ... only 4th gear .... getting RPM M12 installed next week ... blockers (syncros) are shot ... grinds at all rpms up or down ... cant wait for new trans

Sep 18, 2010 | 06:14 PM

ragtopws6

Melting Slicks

Joined: Feb 2003

Posts: 2,966

Likes: 22

From: Frederick Maryland

St. Jude Donor '08-'09-'10-'11

Quote:

Originally Posted by silver_z06

Most likely culprit is a cracked steel outter blocking ring on the 4th gear OR blocking ring with outter teeth missing. I do see more missing teeth than cracked rings, BTW.

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