First Gear whine

[markw336]

hi there i have a 1998 GTB legacy BG5 and i noticed the other day when i put it in first gear and foot on the clutch coasting down the hill it has a slight whine in first gear.

now i know this is common from all the thrashes people give these in first gear but my question is it ok to keep it like this or should i be looking for a replacement i mean it doesnt crunch into gears or anything like that

[Joker]

clutch in coasting isnt a bad habit i hope

other wise cant help ya sorry : free bump

[94 Leone]

maybe you've burred something, drive around in first for a while, it might wear down???

[kamineko]

 94 Leone said:

maybe you've burred something, drive around in first for a while, it might wear down???

so next time i hear clunk clunk clunk from the engine, i should just drive around for awhile until the big end bearing grinds itself round again? LOL just remember suggestions in a tech thread will be followed by people who know no better

how fast are you coasting to hear the noise? 1st gear at 50kmh is a bunch of revs, so at clutch in & idle there will be a large differential between the input shaft revs and the flywheel, which the spigot bearing will have to cope with. maybe that is making some noise? you might be able to hear it in 2nd to a lesser extent (same conditions at ~90kmh but more road noise)

if its strictly 1st then (while engaged in 1st) try putting a little pressure on the gearstick in each direction to see if the noise changes. if it does, then a selector fork may be slightly bent

[WRXONP]

Does it whine under load ?

Or is exhaust too loud?

Normally gear whine is worn teeth resulting in excessive back lash

All i know with my experiences with Subaru gear boxes is - launching them makes 1st gear whine ( excessive back lash ) - keep launching and then they go boom

[markw336]

at this stage exhaust way exceeds it as per why i only know by clutch coasting 1st its whines consistant with the speed havent noticed it cause i dont generally thrash first only on the drag strip normally boot in 2nd or 3rd

[WRXONP]

Chuck a silencer in and see if you have whine on acceleration - if you have whine on acceleration - and whine on Decel - and you can hear the pitch change at the change over point of accel and decel that's excessive back lash between the gears and the different pitch you hear change over is the gears on the drive and coast sides

Excessive back lash won't last doing launches - as the impact the gears take when the clutch is dropped will smash the gears Eventually

Thicker oil can reduce whine as it takes up the back lash too a degree and also acts as a cushioning effect when dropping the left pedal

But any who if your not launching it - it should last -

[Bugle]

My BG's had a whine in 2nd for 9 years...