skyludeboy Posted April 15, 2012 Share Posted April 15, 2012 Today I came across a problem with the 6 speed supra gearbox on my car, after driving on motorway approx 100miles, I come to a stop in town to park my car and all of a sudden I lost all gears, even with the car off I cant get the car in gear, any one know what could be wrong I have brought the car home now almost removed the gearbox to have a proper look, but would just like some feedback on what to expect, the car has an exedy twin plate clutch what makes noises that normal twin plate clutches do and gearbox did not make any grinding noises during the journey. help appreciated. Quote Link to comment Share on other sites More sharing options...
tkddav3 Posted April 15, 2012 Share Posted April 15, 2012 ive got an exedy twin plate aswell bud. doesnt really make any noises that ive heard bud. only noise i hear is a lightened flywheel rattle when youve got your foot of the clutch pedal Quote Link to comment Share on other sites More sharing options...
skyludeboy Posted April 15, 2012 Author Share Posted April 15, 2012 yep thats the only noise mine makes too only when the clutch is depressed can hear the release bearing and slight rattle during low rpms, apart from this driving was fine Quote Link to comment Share on other sites More sharing options...
Guest ugp Posted April 16, 2012 Share Posted April 16, 2012 yep thats the only noise mine makes too only when the clutch is depressed can hear the release bearing and slight rattle during low rpms, apart from this driving was fine Without wanting to patronise or anything, I'm assuming you'd checked the gear linkage? Quote Link to comment Share on other sites More sharing options...
skyludeboy Posted April 16, 2012 Author Share Posted April 16, 2012 well thats the problem the selector shaft does not select any gears no more even with the shifter removed. Quote Link to comment Share on other sites More sharing options...
Guest ugp Posted April 16, 2012 Share Posted April 16, 2012 well thats the problem the selector shaft does not select any gears no more even with the shifter removed. Assuming the box has oil in it? The only case I've seen that happen was on a dry box, the selector shaft siezed up with the heat. Sounds like a strip down and inspect job I'm afraid. Quote Link to comment Share on other sites More sharing options...
skyludeboy Posted April 16, 2012 Author Share Posted April 16, 2012 I removed the box now of the can and the box still got oil in it, the main input shaft that the clutch fits to is only spinning clockwise I cannot twist the shaft anti clockwise, so I do not know what this means any ideas? could it be its stuck in reverse? I did try to stick it in reverse gear when it failed on me yesterday then it would not select any gears. Quote Link to comment Share on other sites More sharing options...
Guest ugp Posted April 16, 2012 Share Posted April 16, 2012 I removed the box now of the can and the box still got oil in it, the main input shaft that the clutch fits to is only spinning clockwise I cannot twist the shaft anti clockwise, so I do not know what this means any ideas? could it be its stuck in reverse? I did try to stick it in reverse gear when it failed on me yesterday then it would not select any gears. It should spin in both directions, in any gear. It sound's like a selector fork has jammed. The only way you can sort it is by stripping the box down for a rebuild. It's not very often the 6 speeds fail, what kind of power were you putting through it? Did it get abused etc? Quote Link to comment Share on other sites More sharing options...
skyludeboy Posted April 16, 2012 Author Share Posted April 16, 2012 hardly any power at the moment, I only just rebuilt the engine gone forged route, I could not boost it as it had a fuel cut to run the engine in, I only drove it like an everyday car, are selector forks easy to get hold off? Quote Link to comment Share on other sites More sharing options...
Guest ugp Posted April 16, 2012 Share Posted April 16, 2012 Unless it went bang, I cant see you needing a new shifter fork, it's probably just jammed up. Quote Link to comment Share on other sites More sharing options...
dr_jekyll Posted April 16, 2012 Share Posted April 16, 2012 guessing is not goig to fix anything im affraide mate. spanners out and dig in Quote Link to comment Share on other sites More sharing options...
skyludeboy Posted April 16, 2012 Author Share Posted April 16, 2012 im scared to open it might give it to someone that knows what they are doing and will update on what went wrong when I find out Quote Link to comment Share on other sites More sharing options...
Abz Posted April 16, 2012 Share Posted April 16, 2012 im scared to open it might give it to someone that knows what they are doing and will update on what went wrong when I find out I'd recommend you do that if you are not familiar with the box, I'd certainly wouldn't want to dive in and have a look without knowing what I should be looking for & what isn't correctly in place. You have a few options being in Kent too! Infact messaging Supraturbochris and see if he can take a look at it for you (His based in Kent). Quote Link to comment Share on other sites More sharing options...
skyludeboy Posted April 20, 2012 Author Share Posted April 20, 2012 found the problem, turned out to be a bent reverse selector rod which got pushed in more than it should, on the reverse and knocked the gears and scyncros out of place, I also managed to find a place in harrow, middlesex area area who can actually build these gearboxes for a very good price, the guy working on my box rebuilt one years ago and is familiar with getrags. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.