Manual transmission oil leak help

[Memmeddu]

I've broken my car's gearbox housing , and now it leaks oil .
Or better it has not oil anymore .
I'm thinking to put either a thicker oil like 120W instead of 90W or even grease because .
It's cracked and I can't disassemble it and mechanic's expensive at the moment .
I can't see where it's cracked so I can't weld it in place
Any advice

 

[Kram]

How do you know its cracked, big puddle of oil on ground?

 

[Memmeddu]

How do you know its cracked, big puddle of oil on ground?

Exactly
Watched under the car and seen the oil pouring out

 

[Barking Mat]

If it's cracked, it's new gearbox time.

No matter what you put in it, it's going to leak out.

Not the oil seals per chance ?

Is the sump plug still there.

What did you say the car was ? Fiat ? Vague memory.

Followed by how / what did you do ?

 

[Moose McAlpine]

Isn't it a Punto? Sure it's not blown a hole in the diff housing?

They do that..

 

[8ob]

Just cut the floor out of it and have a yaba daba doo time or weigh it in

Bob

 

[galooph]

On my old Punto, I thought I'd clean some surface rust off the sump. Pinged off a rust flake, and oil came flooding out!

 

[PhillipM]

If it's cracked, it's just going to shove the shafts apart and smash the gears when you try to drive it anyway. Thicker oil is barely going to help with a crack, you'd have to run semi-fluid grease to stand a chance.

If it's a Punto the input shaft bearing has probably failed and the shafts are shifting around. Or it's spat a spider out of the diff is the usual one.

 

[mike 109444]

You will up set her

 

[nickk]

If it still selects,try an epoxy or job weld?,I once cracked a motor bike gearbox and fibre glassed it plus reinforced with a plate retained by the adjacent bolt,did many thousands,was still there and oiltight when I sold it .

 

[Barking Mat]

If it still selects,try an epoxy or job weld?,I once cracked a motor bike gearbox and fibre glassed it plus reinforced with a plate retained by the adjacent bolt,did many thousands,was still there and oiltight when I sold it .

Interesting technique, I would never have thought of that.

Needs must, when the devil drives, etc...

 

[Bobupndown]

Not being au fait with Fiat engines and boxes, is the sump removable, ie, a sump pan that can be unbolted? Guessing it is if its steel and gone rusty? If so get a replacement and refit with new gasket? Or do a temporary repair / bodge with chemical metal to seal it or as we are on a welding forum, get it welded (probably not a good option without removing it first though).

 

[Memmeddu]

I drove on a hole while steering .
Something hit the gearbox sump.
There's no visible crack but it's surely there , unfortunately I'm not able to fix it with what I have at home .
I've thought about the JB weld method to make it last few days yet.
Tomorrow I'll lift the car with the forklift at work to see if I can Tig weld in position.
Yep it's a Punto 188 MK2

 

[Memmeddu]

Not being au fait with Fiat engines and boxes, is the sump removable, ie, a sump pan that can be unbolted? Guessing it is if its steel and gone rusty? If so get a replacement and refit with new gasket? Or do a temporary repair / bodge with chemical metal to seal it or as we are on a welding forum, get it welded (probably not a good option without removing it first though).

Can't be removed without removing the gearbox.

 

[mike 109444]

At the very least there should be a mark where you "hit" it that may point you to the area that's leaking. Probable biggest issue will be getting it clean/oil free enough toi get anything to stick. Should not be much pressure in the gearbox so once VERY clean should be able to patch with some filler till replacement found. Hope you get it sorted.

 

[Bornfree]

Fill it with grease and sawdust, good for 30,000miles at the least

 

[blackolive (Ste)]

I drove on a hole while steering .
Something hit the gearbox sump.
There's no visible crack but it's surely there , unfortunately I'm not able to fix it with what I have at home .
I've thought about the JB weld method to make it last few days yet.
Tomorrow I'll lift the car with the forklift at work to see if I can Tig weld in position.
Yep it's a Punto 188 MK2

Turn it upside down and leave it for a few days for the oil to drain out of the crack then epoxy the crack after degreasing

 

[500e]

I drove on a hole while steering .
Something hit the gearbox sump.
There's no visible crack but it's surely there , unfortunately I'm not able to fix it with what I have at home .
I've thought about the JB weld method to make it last few days yet.
Tomorrow I'll lift the car with the forklift at work to see if I can Tig weld in position.
Yep it's a Punto 188 MK2

Be very careful did a sump plug once I had a flash burn side of face and neck, luckily I closed my eyes had blistered eye lid was 12 ft away, the foreman welding had a bad burn on hand and arm

 

[Moose McAlpine]

Tomorrow I'll lift the car with the forklift at work to see if I can Tig weld in position.
Yep it's a Punto 188 MK2

Gear oil and gravity aren't going to help you.

I've TIG'd a few cast vehicle parts, there's all kinds of nasty stuff in the ally and it'll have oil trying to leak out too. (lots of magnesium and silica i think, helps it flow during casting.)

You need to get a scrappy gearbox most likely.