Mazda Rotary Club

General => General Technical => Topic started by: leefitz on May 24, 2011, 09:06:51 PM

Title: Gear grinding :S
Post by: leefitz on May 24, 2011, 09:06:51 PM
Hey, I\'m having alot of trouble changing gears, especially at speedy gear changes. The clutch is not long in and is in top condition. I bleed the fluid in the clutch but that didn\'t help.  Its dot 5.1 fluid at the min but when I get back home next week it\'s getting flushed and dot4 through into it.  If it\'s not the fluid then what could it be? I\'m hoping its not the box :S
Title: Gear grinding :S
Post by: mo_yassin on May 24, 2011, 11:04:58 PM
Could be low on gearbox oil?
Title: Gear grinding :S
Post by: leefitz on May 25, 2011, 12:19:47 AM
Worth a check I guess.\'cars been out twice just and sits in the one place on concrete so i would see fluid if it had leaked out. Its dosnt grind anywhere near as much when changing slow
Title: Gear grinding :S
Post by: memski on May 25, 2011, 08:13:07 AM
Possibly worn engine mounts.
Title: Gear grinding :S
Post by: leefitz on May 25, 2011, 08:17:36 AM
Hope not. She\'s on solid mounts lol, it\'s only on the gear change so I\'m sorta stumped
Title: Gear grinding :S
Post by: Pantera Chris on May 25, 2011, 02:32:27 PM
worn gearshift bushing is my guess. DM Motorsport do a solid replacement that eliminates sloppy changes
Title: Gear grinding :S
Post by: leefitz on May 25, 2011, 02:42:46 PM
Cheers but new short shift replacement is in and only seen 2 days out. It\'s as if the clutch wasn\'t disengaging enough. An I\'m sure the we cylinder on the gearbox is in place properly too.
Title: Gear grinding :S
Post by: Pantera Chris on May 25, 2011, 03:32:56 PM
can the clutches be adjusted?
Title: Gear grinding :S
Post by: HK FD3S on May 25, 2011, 04:08:03 PM
Quote from: Pantera Chris;764818can the clutches be adjusted?

The clutch Pedal can be but getting your head and body upside down to adjust a couple of screws is HARD
Title: Gear grinding :S
Post by: HK FD3S on May 25, 2011, 04:09:07 PM
Quote from: Pantera Chris;764818can the clutches be adjusted?

The clutch Pedal can be but getting your head and body upside down to adjust a couple of screws is HARD

Double post sorry:Nono!
Title: Gear grinding :S
Post by: BlitzBoy on May 25, 2011, 04:16:54 PM
Possiable knackered clutch slave cylinder or clutch master cylinder
Title: Gear grinding :S
Post by: SiH on May 25, 2011, 04:50:36 PM
Mine does this - 4th to 5th especiall requires \'patience\'. Most others need a lot of manhand.
It\'s had:
2 difference types of box oil
2 clutch masters
A new slave
A new clutch
Pedal adjusted
About a million bleeds

I\'ve come to the conclusion the box is just buggered.
Title: Gear grinding :S
Post by: Pantera Chris on May 25, 2011, 04:55:48 PM
3rd to 4th on mine crunches at hoonage speeds. Also whines to buggery which my builder knows how to fix apparenly.
Title: Gear grinding :S
Post by: SiH on May 25, 2011, 08:34:17 PM
Yup, mine whines worse than a 14a box. It sounds like a touring car.
It\'s the input shaft bearing - same as the good ol\' SR20 box - requires a partial box strip down unfortunately :(
Title: Gear grinding :S
Post by: TRIND-FD on May 25, 2011, 09:35:24 PM
As blitz said , poss master cylinder, also you fitted a new clutch, possible torn release bearing or snapped/bent clutch fork. You can check bearing n fork through the inspection plate on the bell housing.

Keith.
Title: Gear grinding :S
Post by: leefitz on May 26, 2011, 04:26:30 PM
Cheers lads, there\'s a new release bearing in place, didn\'t notice anything out of place with the forks when i changed the clutch.  Will try adjusting the clutch when im home again, should be fun getting past the ridgid bucket seat  :S  

Would you normaly have to adjust the clutch peddle after changing the clutch?