Bugeye Gearbox/Diff advice

[myles1972]

I have a Bugeye WRX and noticed the other day a whine/drone that was only present in gear, and when I had 'warmed' it a bit! When I depress the clutch the sound goes away. I also noticed that the box seemed to be a little rough on slowing down in gear.

I have 5L of that Millers CRX 75w90NT gear oil to replace the old oil, how do the box and diff react to the change, chances of the drone disappearing?

Im running approx 310bhp as well, so hopefully not too much power/torque for the 'box.

All advice gratefully received.

(I know, noise diagnosis is nearly impossible but humour me!!)

[myles1972]

Anyone?

[gowmonster]

you'd probably have more luck on a scoobie forum, jap chat is a bit quiet here...

you sure its not the release bearing? although that would normally be a chirp.

http://www.scoobynet.com/esp_search.php?query=gear...

[ScoobieWRX]

If you're starting to get a little whine/roughness from the box/diff i recommend Redline Heavy Shockproof gearbox oil. You don't have an LSD up front in a WRX so the oil will be fine. It contains polymers that stick to the gears/gogs, softening the consequences of loading up the box through general driving.

Put it this way i was running a bugeye wrx box for quite some time that was whining and a bit rough generally. I was making 370ft/lb torque while running Redline Heavy Shockproof for quite some time. If it wasn't for the Redline i'd have said goodbye to that box a long time before.

Incidentally, in the end i lost 3rd gear. Being the most used gear in a WRX it wasn't a surprise, however, the box ran fine with one gear missing until i swapped it over thanks to the Redline.

It's good stuff!!

[JollyGrnMonster]

Millers gear oil is very good stuff.

I would give it a go

[myles1972]

Cheers guys! I was recommended the Millers and got it for a good price so I'll change that before thinking of mechanical changes. Just to work out how to get the gear oil down the dipstick now!!