Noise from the gearbox

[sewid]

Hey guys,

Since i picked up my Skyline a week ago I have noticed a strange noise through a certain rev range. About 1800 - 2500 rpm. It generally happens only in 2nd and 4th gears.

The noise sounds a bit like a bearing noise, i first thought it might be a leak in the intake or something but it doesnt manifest itself in 3rd gear at all. It sounds like a hissing unlubed bearing type noise. Hardish to describe.

Once it hits boost the noise kind of vanishes with speed increase.

I was searching for something on the forums and the thread at this link might relate.

Would bearings in different gears make different noises? Should i take it back to the dealer and get them to replace the bearings?

Car is a 1993 5 speed manual Skyline R33 GTS25t.

Thanks!

[Jet]

sewid

i have the same problem here. i got the noise in 3rd and 4th in the rev range of 1500-2000.

have u found the solution to it yet?

[sewid]

Originally posted by Jet

sewid

i have the same problem here. i got the noise in 3rd and 4th in the rev range of 1500-2000.

have u found the solution to it yet?

Cant hear it anymore. Induction noise too loud or its gone away... I plan on putting the airbox back on soonish so i will let you know if the noise is still there.

[Jet]

i dont think u can hear the induction sound below 2000rpm.

[cobo_11]

I went to the post sewid included in his post. My gearbox makes the same noise when you have the clutch disengaged.

Wondering if anyone would know how much to replace the bearings that cause this noise?

Cheers.

[wrxhoon]

sewid try to listen to this noise when the car is stoped and the engine going .if its aslight wound type of noise then push the clutch in and after 60 or so seconds see if the noise goes if it does then its the g/box bearings for sure if it gets worse with the clutch pedal pressed in then its the thrust bearing in wich case it shouldnt do it while driving .