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demuire Forums Junkie Location: Ipswich Registered: May 2002	Sparkly bits in gearbox oil Mon, 25 July 2005 22:31 What would usually cause this? I'm trying to figure out why all my gearboxes are failing (I'm going onto my 7th T50 in 15 months). On one hand it could be that I'm just having bad luck and getting boxes that are on their way out (all 2nd hand boxes), on the other hand maybe something else is the problem. The first 4 T50's I went through were Celica T50's, with an A bellhousing bolted on. All of them went the same way, they made lots of sparkly bits, made lots of noise, then 4th gear would pop out all the time, then 2nd, then reverse. Then I got a JDM AE86 T50, this, too, made lots of sparkly bits, and then shattered 2 teeth in 2nd(?) gear, both side by side on the layshaft. Then I got an ADM AE86 T50, and this is making lots of sparkles too, and looks like it's shattered some teeth in 3rd and 2nd gear, and is making a hell of a lot of noise in 4th and 5th. Every one of the boxes except this last one has died while just cruising around town (not heavy load or high speed). Last one died under hard acceleration (which isn't even that quick...) My car is a KE35, with a stock small port 4AGE, dynoed at 69hp atw. Engine was installed so that the sump is level, although I've noticed that with this angle when I remove the drain plug from the gearbox not all the oil comes out (there's a little bit left in the bottom). The last 3 boxes I've been over-filling the box in hopes that it would make it better. I'm using Castrol 80/90 oil, some sort of yellow-green stuff. Clutch is a stock item with a heavy duty pressure plate, Exedy or something like that. Split 2 of the old boxes apart yesterday, and noticed that there's a bit of corrosion on the gears and bearings (how does this happen when the box is full of oil?), on the Celica T50 it's so bad that you can feel it when you turn the gears. There are also lots of small scratches on the wear faces (I don't know which way the engine turns, I'm guessing it's the leading face), some of them are pitted a little too. Here are some pics: Broken teeth Sparkly oil Corrosion and scratches on wear faces More pictures Any ideas? I find it hard to believe that 69hp atw can kill so many T50's, especially when I hear of drifters pushing a hell of a lot more power and doing clutch dumps etc everywhere and not having any problems... [Report message to a moderator]

	Subject	Poster	Date
	Sparkly bits in gearbox oil	demuire	Mon, 25 July 2005 22:31
	Re: Sparkly bits in gearbox oil	demuire	Mon, 25 July 2005 23:20
	Re: Sparkly bits in gearbox oil	Toobs	Mon, 25 July 2005 23:52
	Re: Sparkly bits in gearbox oil	Henn	Mon, 25 July 2005 23:54
	Re: Sparkly bits in gearbox oil	Norbie	Tue, 26 July 2005 00:07
	Re: Sparkly bits in gearbox oil	demuire	Tue, 26 July 2005 00:08
	Re: Sparkly bits in gearbox oil	demuire	Tue, 26 July 2005 00:12
	Re: Sparkly bits in gearbox oil	demuire	Tue, 26 July 2005 00:14
	Re: Sparkly bits in gearbox oil	davedave	Tue, 26 July 2005 00:29
	Re: Sparkly bits in gearbox oil	Norbie	Tue, 26 July 2005 00:27
	Re: Sparkly bits in gearbox oil	demuire	Tue, 26 July 2005 00:41
	Re: Sparkly bits in gearbox oil	Henn	Tue, 26 July 2005 01:14
	Re: Sparkly bits in gearbox oil	demuire	Tue, 26 July 2005 01:18
	Re: Sparkly bits in gearbox oil	ChuckLandwehr	Tue, 26 July 2005 06:53
	Re: Sparkly bits in gearbox oil	demuire	Tue, 26 July 2005 06:55
	Re: Sparkly bits in gearbox oil	drift86levin	Tue, 26 July 2005 23:10
	Re: Sparkly bits in gearbox oil	drift86levin	Tue, 26 July 2005 23:11
	Re: Sparkly bits in gearbox oil	gianttomato	Tue, 26 July 2005 23:23
	Re: Sparkly bits in gearbox oil	demuire	Wed, 27 July 2005 01:09
	Re: Sparkly bits in gearbox oil	thechuckster	Wed, 27 July 2005 06:19
	Re: Sparkly bits in gearbox oil	wilbo666	Wed, 27 July 2005 07:06
	Re: Sparkly bits in gearbox oil	Norbie	Wed, 27 July 2005 01:34
	Re: Sparkly bits in gearbox oil	demuire	Wed, 27 July 2005 05:34
	Re: Sparkly bits in gearbox oil	ChuckLandwehr	Wed, 27 July 2005 06:09
	Re: Sparkly bits in gearbox oil	demuire	Wed, 27 July 2005 06:36
	Re: Sparkly bits in gearbox oil	thechuckster	Wed, 27 July 2005 08:57
	Re: Sparkly bits in gearbox oil	demuire	Wed, 27 July 2005 14:49

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