Gearbox? Issue, You Might Know!

[EZSLDR]

Hey guys new to this so tell me to fxck off and search or what ever but i have done a wee bit.

So, i just shimmed my diff in my r32 as per the diy instructions worked a treat nice and tight, pretty much locked =)

Now i have this weird knocking noise after releasing the clutch into gear and driving slow like something is buggurd in the gearbox.

There is no movement in the diff or shafts and the driveshaft seems good but you can turn it a wee bit and its like the gearbox has a delay to engage, so what in the gearbox would cause this play/knock?

Still drives mint in every gear no noises or crunches

the car was perfect to drive before the tighter diff was in or maybe it wasnt enough to notice it i dont know.

cheers please help =)

[barry1024]

knocking noise around 900rpm?

[EZSLDR]

yea i guess its around that rpm but to me it feels like there is a lack of tightness i guess in the gear box

[Duncan]

if there is a clunking noise when you apply or remove power, and you've just shimmed the diff, by far the most likely reason is the backlash is not set properly. Are you confident you followed the right procedure there?

[EZSLDR]

Yeah pretty confident with the car jacked up when you twist the drive shaft back and forth the halve shafts turn with it almost no play there but at the gearbox end you can twist it a bit before you can hear it clunk or engage, is there anything in the gearbox that could cause this keeping in mind that everything else is mint no noises no crunches shifts perfectly etc

[chez00]

Drop the tailshaft and turn the gearbox yoke independently. Then do the same for the diff. Work out where the problem is, because it can be deceiving when it's all hooked up. I'd agree that it sounds like you've got too much backlash in the diff. There's not a whole lot in the gearbox which would cause a delay to take up, unless you're missing teeth or something.