Bad karma.....

[chris59]

Hello guys,

Now that my 350I injection problems are solved, thanks to the help of members of this forum https://www.pistonheads.com/gassing/topic.asp?h=0&... now it's the gearbox who's playing with my nerves…

During a local touristic rally this morning, 2nd and 4th speed nearly refused to engage after a 2 minutes stop.

"Nearly" because they can be engage, but at the price of an horrible noise : thanks to the torque of this fantastic car, I went back home avoiding 2nd and 4th, but it's not funny at all.

No problem at all with reverse, first, third or fifth, so it's not a clutch problem, so what could be wrong now ?

The gearbox extension bushes seems to be good, imho.

I sincerely hope it's not a gearbox out problem : once they are engaged, each speed is working fine (even 2nd and 4th !), and no nasty noise from the gearbox (not even a failing bearing noise).

Any idea ?

Edited by chris59 on Sunday 2nd June 17:27

[burnsdavies]

Hi I had something like that on my 400se if yours has a LT77 gearbox
on the remote it has a bias spring set up which you can adjust the bolts to adjust the the line up of the gear selection an easy job from under the car no need to remove anything
How to do it can be found online hope it turns out to be a simple fix

[chris59]

Thanks for your reply and wishes mate !

How can I identify a LT77 gearbox ?

If I'm not wrong, my 350I has the same model of gearbox as my ex TR8 (factory, not a TR7 V8) or TR7, but I don't know if they are LT77 or not, sorry.

[adam quantrill]

Sounds more like a selector problem. If you pull the gearstick up does it come up over half an inch? In which case yes the bushes need attention or maybe just the bolts nipping up.

[chris59]

Hello Adam, how are you ?

I sincerely hope you are right : I can't get access to this car before later in the week, then I'll check this, thanks.

[adam quantrill]

Yeah not too bad.

I also have a new leather gaiter on mine that is stiffer than the old one, this can interfere with 2nd and 4th occasionally, or at least you have to be more positive when selecting them.

[chris59]

T'was made from an Angus cow skin ? I'll get my coat….;)

[mk1fan]

If reverse is by 1st gear its a LT77.

Sounds like some of the fixings on the remote are loose or some of the bushings have gone. If it is bushings then you can get poly versions.

[chris59]

I hope you are right, these bushes are far simplier to replace than a gearbox rebuilt.

[chris59]

Hello guys, it took a couple of month before I could work on this TVR, but it didn't took me a long time to do the job : you were right, the bushes were gone, as was the small "cup" at the bottom of the gear lever.

Both replaced/repaired, problem solved !

Many thanks for your help,

Cheers,

Chris

[adam quantrill]

Yeah the cup thing doesn't do a lot, it's the bushes that are important.