Ah that's nasty. You might try JB WELD if the crack can be accessed externally and is not near bolts and such. It's really tough stuff and I've used it on other repairs with great success. The key to adhesion will be removal of all oily/gas contamination and then a light and careful sanding or scuffing with sand paper to give it good adhesion. Once fully cured gasoline won't affect it. Well worth a try.

Where Are You From? Oro Station, Ontario, Canada

Do You own a car built by Durant? 1925 Star F Touring

Thanks Don-- worth a try when all else fails--

Where Are You From? Kamloops B C Canada

Do You own a car built by Durant? 1930 Durant model 6-14 deluxe rumble seat coupe

Hi Yukon Jack,
I have also used JB Weld on a 30 Durant carburetor. Worked fine for me.
Good luck ...............

Yates

Where Are You From? Newport, NC

Do You own a car built by Durant? 1924 Flint Sedan

I used that J B Weld to repair the Distributor mount elbow behind the generator on my A-22 when I restored the car 15 years ago and is still going strong....Best thing that has come along since the flush toilet, well, with the exception of Yukon Jack.

Where Are You From? Leavenworth, WA / Yuma, AZ

Do You own a car built by Durant? yes