Fourth gear grind

[silviaz]

2 minutes ago, GTSBoy said:

All RB gearbags, especially the big turbo box, have rollover noise. Mine certainly does. Always has. Sometimes is worse than others - no particular idea why, although it is probably temperature related.

I have smurf jizz in mine and have had to have it in there from the first day the box went into teh car. It simply would not select gears with the engine on, on day one, with normal oil in there. And so, the blue stuff has probably ruined almost everything synchro related in the box. But it has taken 12 or 13 years to get to the point where I simply must replace the box. It has become increasingly baulky of late, which might be symptomatic of the way I've been driving it, as much as anything. I shall have to make some corrections when teh new box goes in.

Input shaft bearing noise will decrease with clutch pedal pressed because the drive is removed. But yes, more often than not noises that work like that are associated with the throwout.

It won't matter either way, new box will mean this one can be relegated to the parts pile.

Yeah, a mechanic who knows these cars told me even if I get a brand new gearbox the noise will return but will be less noticeable. I've heard someone also they this noise came back after 3,000km on a new or reconditioned gearbox. It is pretty f**king annoying though just hearing groaning most of the time lol. I wonder if an aftermarket input shaft bearing would fix the problem or how they are built.

Edited March 29 by silviaz

[silviaz]

4 hours ago, Duncan said:

Pretty sure you are thinking of the throwout bearing there (which you should change when you change your clutch), when they are worn they will get quieter if you put your foot on the clutch. An input shaft bearing is turning/noisy at all times.

Nah not the throwout bearing, it's something internal. I already replaced the throwout bearing. Mechanic misdiagnosed my car and thought it was a spigot bearing, went to another bloke who said it was an input shaft bearing. (I replaced everything when I pulled out the gearbox but didn't open up the gearbox.

To clarify, you always hear it at idle unless the clutch is pushed in and as you're driving but goes away the higher the revs are.

In this video at timestamp 6:03 : Mine has the same sound

 min

Edited March 29 by silviaz