Brazing vs jb weld??

[stutaeng]

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800 psi? Is that what it says?

I think aluminum has a tensile strength of 30,000 or 40,000 psi...

 

[kennythewelder]

800 psi? Is that what it says?

I think aluminum has a tensile strength of 30,000 or 40,000 psi...

That all depends on what aluminum your talking about. The trans case is a cast aluminum, so it would be a stronger tensile than just regulator 4043 aluminum. We used 5356 aluminum welding rods in the shop all the time. It's just a stronger rod. Here are a few different charts on the tensile strength of regular 4043 aluminum, and cast aluminum. As you can see 800 PSI, and crap.

 

[Pinger]

800 psi? Is that what it says?

I think aluminum has a tensile strength of 30,000 or 40,000 psi...

The internet says 13,000 psi for pure aluminium and up to 99,000 for high tensile alloys.
There is (or was) a low temp alloy brazing rod with a tensile strength of 9 tons/sq inch (20,000psi) made by a firm called Eutectic and called the 19. Superseded with another (I can possibly find its number if needed) but would still require the part be removed to protect seals, fluid and prevent fire hazard.
As per others, replacing housing seems the most obvious solution.

 

[stutaeng]

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Well, maybe I'm wrong then!

 

[Schurkey]

Until we see photos of WHAT EXACTLY CRACKED, how big it is, whether there's any pieces missing, whether it's in an area subject to trans fluid pressure...you're going to get a bunch of guesses on whether or not epoxy will withstand the stresses.

IF (big IF) this really is a tailhousing crack, it should be fairly easy to replace the tailhousing.

And by the way, consider using punctuation. It's hard to read your run-on sentences.

 

[21InA94]

I was wrong about the tailshaft it's the back of the trans (4x4 4l60e) right on the side by where it mounts to transfer case

 

[Caman96]

This has the makings of a good Phil Swift Flex Seal commercial!

 

[GoToGuy]

This is better explained and get a better answer with a photo of the problem.

 

[RichLo]

^x2

Take some pictures with your phone and post them up. A picture is worth a thousand words or two run-on sentences.

 

[texas tough]

are u sure its cracked, not a leaking seal? sometimes the rough casting lines look like cracks. its not easy to crack a tranny