gearbox probs

[Lord Shagg-Pyle]

When changing up and down gear, there is sometimes a crucnh as the gears engage, almost as if something is not lining up. My initial thought was the balance plate on top may have fracture but this is intact.
The gearbox is only 2+ years old.

Any thoughts?

Cheers

L S-P

[90Mike]

Hi mate in what gears do you have the problem  :? in all of them ? or just the usual 2nd and 3rd......Mike

[Lord Shagg-Pyle]

the crunch occurs from 1 to 2, 3 to 2, 4 to 5. Not the usual sequence. I've had the gearstick mechanism apart to day expecting the plate at the top to be broken, but no!. Nothing seemed out of place.
I did notice the bias spring to the left of the stick is noticeable weaker than the right. Is that normal?

[bilge rat]

you can adjust the plate , when i welded mine i put it in 4th then lined it up . might be worth a go...alan...

[chris9119]

The bias springs play no part in the gear changing process, they just centre the gearstick the gear stick.

Sounds like a syncrow problem to me.

One assumes its an LT77/S box, and one also assumes that your using ATF oil in it?

[bilge rat]

cant see how all the synchros could fail together , i know what your saying about the bias plate but have you ever had one go . i was surprised how hard it is to find the gears, atf has now been upgraded to mtf 94 , better grade. we havent suggested the clutch not clearing !!. might be worth a check of the hydrolic system. alan...

[Lord Shagg-Pyle]

The hydraulic system is the next thing on the list. Changed the oil yesterday, the problem is still there. Its very hard to describe, but it will change gear perfectly if I make the effort not to push the gear lever too far over when going from 1 to 2. The plate was fine, not fractured as I first thought.
Lets hope it is the clutch hydraulics. Regretably, another gearbox within less than two years does not make it financially  viable to keep the car, as the engine is now at 205K miles, although still going well, fingers crossed!

[andyb]

Do you drive with you hand resting on the gear lever. The weight/pressure can cause premature wear in the selector forks.....this could then lead to a crunchy gear change as you decribe.

HTH

[Lord Shagg-Pyle]

Do you drive with you hand resting on the gear lever. The weight/pressure can cause premature wear in the selector forks.....this could then lead to a crunchy gear change as you decribe.

HTH

That is a possibilty. I hadn't noticed. Selector forks. Sounds like a box out job! :roll: