Gear oil blowing through the breather

[RetroTed]

As title, i'm getting lots of oil blowing through the gearbox breather, any ideas guy's

 

[JamesBryan]

@NorthloopCup

Not overfilled is it?

 

[RetroTed]

@NorthloopCup

Not overfilled is it?

i don't think you can over fill them

 

[DrR]

i don't think you can over fill them

You can if you fill them through the breather I think.

 

[JamesBryan]

You can if you fill them through the breather I think.

This.

 

[bloke]

Takes about a year to fill through the breather.

 

[RetroTed]

You can if you fill them through the breather I think.

Yeah we did but we removed the top level bung so we knew when it was full. Bizzare one

 

[DrR]

Top level bung?

The plastic butterfly screw on the side?

 

[Coops Mk1]

ai level/fill hole is on the front of the box about halfway up, if you've filled it any higher than that (about half full basically) then it'll blow out all over

 

[JB21]

Mine blows slightly and I changed the box oil via the butterfly screw cap. Its been doing this for 2 years now, its probably the breather seal but its so minimal I've just left it.

 

[JamesBryan]

Mine blows slightly and I changed the box oil via the butterfly screw cap. Its been doing this for 2 years now, its probably the breather seal but its so minimal I've just left it.

Sounds knackered mate, you're going to have to get a rebuild and a diff at the same time unfortunately :tongueclosed:

 

[Djw John]

Or if you do it on a slope, for example when the front is jacked up but the back is on the deck

 

[JB21]

Sounds knackered mate, you're going to have to get a rebuild and a diff at the same time unfortunately :tongueclosed:

Haha, seen one in the FS section as well with a gripper for £1500. Only if my belts weren't due... :triumph:

 

[JamesBryan]

Haha, seen one in the FS section as well with a gripper for £1500. Only if my belts weren't due... :triumph:

Bargain.

 

[JB21]

Bargain.

Gonna get Carl to drop me some 197 cams in and take it to EFI, that will do for now but a diff will be going in once the box is done.

 

[JamesBryan]

Gonna get Carl to drop me some 197 cams in and take it to EFI, that will do for now but a diff will be going in once the box is done.

Nice little increase with them mate.

 

[RetroTed]

ai level/fill hole is on the front of the box about halfway up, if you've filled it any higher than that (about half full basically) then it'll blow out all over

No it's got the correct amounts of fluids used the breather to fill as it's easier but removed the level bung to confirm she was full enough, it's almost like it's breathing heavy and throwing it back out via the breather pipe

 

[Danith]

Takes about a year to fill through the breather.

Think I lost most of my late 20s doing this

 

[Martin.]

Must have taken you forever to fill it via the breather! Surely easier to just take the butterfly off and use some hose?

If you've put the right amount of oil in and it's not leaking anywhere then I wouldn't be too worried myself. Always worth someone who knows the boxes well though like @NorthloopCup

 

[Danith]

Gonna get Carl to drop me some 197 cams in and take it to EFI, that will do for now but a diff will be going in once the box is done.

Going balls out?! nice!

 

[NorthloopCup]

If it's not overfilled, there's not much else that can cause it tbh. You could always try lengthening the breather pipe. Renault did this with the later 130 boxes.
The internal part of the breather has a Z kinda shape to it to stop this from happening, so it's possible (but unlikely) that it's either damaged/split, or completely fell apart. Again, unlikely though.

Is it definitely coming out the breather?