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fords · 06-04-2018, 09:21 PM

Yes JB WELD. I suggest taking the head off and seal all the water ports on the top of the block with tape ( blue paint tape works well ). Then connect a wet/dry vacuum to the water outlet on the block. Clean your crack area useing brake Kleen while vacuum is running.
After that let the brake kleen dry. Then apply JB weld to crack WITH VACUUM RUNNING. The JB WELD will draw into the crack. Let it dry 24 hours then do same procedure until the vacuum ont pull any more JB WELD into crack. I’ve done this on my model T on the block and the cylinder walls. The T IS FINE AND RUNS WELL.

06-04-2018, 09:21 PM	#20
fords Member Join Date: Feb 2014 Location: Melbourne, Fl Posts: 62	Re: Cracked Block Options Yes JB WELD. I suggest taking the head off and seal all the water ports on the top of the block with tape ( blue paint tape works well ). Then connect a wet/dry vacuum to the water outlet on the block. Clean your crack area useing brake Kleen while vacuum is running. After that let the brake kleen dry. Then apply JB weld to crack WITH VACUUM RUNNING. The JB WELD will draw into the crack. Let it dry 24 hours then do same procedure until the vacuum ont pull any more JB WELD into crack. I’ve done this on my model T on the block and the cylinder walls. The T IS FINE AND RUNS WELL.