Just getting use to my first E30 couple things aint quite right maybe someone could shed some light
Got a noisy diff checked oil level by unscrewing top plug on back casing lots of oil came out so conclude diff must be worn, read there are different diff casings what do i need to look out for when buying a replacement
When selecting gear 1st or rev have to try really hard could this just be worn linkage or could i be looking for a new box to go with the diff.
Any help greatly accepted
Any help for a newbie
Moderator: martauto
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Royalratch
- E30 Zone Addict
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What E30 you got? Diffs come in medium and large casings I think (or medium and small, 2 sizes anyway). It's more important to get the right ratio than size as I think all cases fit all E30's.
Dunno about the box.
Dunno about the box.
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Brianmoooore
- E30 Zone Team Member
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- Joined: Mon Jan 10, 2005 11:00 pm
320i is a small case diff with a ratio of around 4.1 : ! (?). Exact ratio should be marked on a tag under one of the rear cover bolts. Slightly noisy diffs aren't unusual and are not usually a problem for many tens of thousands of miles, but of course, I don't know how noisy your diff is!
Do yo mean it's difficult to slide the gear into place, or it grates as you push it in?
Do yo mean it's difficult to slide the gear into place, or it grates as you push it in?
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Brianmoooore
- E30 Zone Team Member
- Posts: 49358
- Joined: Mon Jan 10, 2005 11:00 pm
If it doesn't grate (and therefore not a clutch problem) there are two possibilities here.
One is what topspark is hinting towards: A very common badly worn bush in the linkage joint on the back of the gearbox, which, if extremely worn, allows the gear lever to catch on the console.
The other is usually worse in cold weather before the oil warms up. The standard cure for this is to change the gearbox oil for ATF, as used in BMW gearboxes from the E36 onwards.
One is what topspark is hinting towards: A very common badly worn bush in the linkage joint on the back of the gearbox, which, if extremely worn, allows the gear lever to catch on the console.
The other is usually worse in cold weather before the oil warms up. The standard cure for this is to change the gearbox oil for ATF, as used in BMW gearboxes from the E36 onwards.
