R33 Bad Knock Sound

[R_B_Boy]

Hey Guys,

Got a bad issue... on the way to work today I noticed a really bad knock sound coming from my car, I could even feel it thru the floor.

Over about 40km/h, it gets faster with speed, not revs.

e.g. in 2nd at 2500rpm it is louder than it is at 4000rpm in 1st.

Its auto, stuck it in neutral, revs dropped to idle and the sound continued, so atleast *hopefully* sure its not the engine.

So a knocking sound somewhere between back of the gbox to the diff.

Could it be not enough oil in the diff? or something else?

[R_B_Boy]

Done a quick search with google and found someone with same problem, but it was a maxda mx6, his problem was gearbox bearings.

Could it be that?

[Duncan]

maybe the unijoint in the tailshaft? also make sure everything is tight even the wheel nuts they making a knocking noise as they fall off too

[R_B_Boy]

well dont i feel like a d!ckhead, front right wheel, 1 nut missing, two i could undo with my fingers and the other two were pretty loose... scary.

atleast wasnt as bad as my bro a few years back, put 2 nuts on a wheel of his gemini, forgot to tighten them up, nd the wheel came off on a corner.