Gearbox Noises

[Dundy2456]

Hey everyone,
To date I haven't had any issues regarding transmission. I fit a short shifter a couple of days ago and using the standard mx5 gear knob it worked fine. Changed to a 20cm bubble shifter and now when I downshift, I get a whining noise audible in the cabin. At a guess it may be the sound of the gears/sybchro/something in the gearbox being amplified due to the larger shift knob? If that's the dumbest thing you've heard let me know.. But yeah, thoughts?
Cheers

[Regie]

All the gear boots in good order??

[Dundy2456]

Yeah, gear boots intact, no signs of wear. Turret oil is topped up too, shift collar is the correct size. Anything else I should be looking at? I've also added some foam around the upper boot to reduce some noise.

[manga_blue]

Same thing happened to me once on another car (actually a hot little Ford Anglia, so it's stretching the definition of "car" a bit). Swapped to a wooden gear knob and it transmitted so much gear noise I gave it away after a few days.

[Dundy2456]

Cool.. so you're suggesting just not use the gear knob if it generates too much noise?

Should probably mention that this didn't happen when I used the bubble shift knob with the OEM shifter... Did I just answer my own question?

[Gladiator]

I read your other post about fitting the SSK, & something about a wider notch than normal? could it be a vibration from that being sent up the shift stick & the different knob weight amplifying the sound?

[Dundy2456]

The noise is still there when I grip the shift knob and there's no visible/audible rattling/vibrations of the shifter unit as a whole.

An example scenario when I'd notice the whining noise would be travelling at 40km/h, downshifting from 3rd to 2nd to turn a corner.