leaky sump on AAZ

[talkingwhippet]

Hi everybody - great to see some sunny weather!

Been spending some time sorting out my leaky sump on diesel AAZ engine. All nice and tight with one of Simon Baxter's rubber gaskets and a couple of helicoiled holes - but still leaking (grrr!)

Have small crack on corner of sump at front just behind the bottom pulley - crack about 1/4 inch and oil seeping through so still have back door & windown covered in fine oil mist all the time and leaks underneath whenever stopped.

What are chances of fixing this crack without removing sump again? I don't want to risk stripping more threads and not leaking anywhere at all from gasket anymore. Have tried some of that epoxy metal stuff and didn't work. Thinking of brazing with HTS-2000 rods, but would have to work upside down, and is it ok to heat the sump in situ with a propane torch? If I attempt this, should I at least drain oil first?

Would appreciate any thoughts of 'alternative remedies' for this - or from anyone who has successfully done aluminium brazing repair using HTS-2000.

Many thanks,
Talking Whippet

[futbus]

Ideally needs taking off and welding up. We can do this on an exchange basis if your interested.