Is this the same shop that pulled the heads off? J/b weld could work, but it would have to be oil free & scratched up really good for it to hold & work. It would get you by till you could get another block.

Wondering why it cracked, hydro locked a head bolt?

 

Nah its the guy who did my swap, he said he could tig weld it thoughts on that? The noise it was making was the lifters, it runs super strong just leaks oil like crazy.

 

I have mig welded cast iron exhaust manifolds before. I would grind a valley in the crack & then weld it up, but I've seen some hold up & some not. The old straight 6 exhaust manifold were bad for cracking. I don't know how welding on a oil surface would work. But you really don't have nothing to lose. Keep adding oil,or try the j/b or have it welded

 

Well the bad thing is its my dd an its torn apart right now, I just didn't kno of trying to jb it our weld it has ben done an it work an last.

 

Take a die grinder grind a divit into the block lightly along the crack and go a hair past the crack in both directions. Spray the cracked area clean with some brake clean and use air to dry it. Then Use the old time jb weld not the jb quick mix it together and work it into the cracked area then smear it past the crack line. Give it a full 24 hrs to dry. Chances are very good it will survive to live another day. I have had to do this before on customers stuff where they just didn't have the money to fix stuff and it worked fine. Your chance are pretty good of never giving trouble again.

 

So with it being a fairly long crack doesn't matter? Or because its along the back with just oil pressure going through should be alright?

 

id look into a short block imo....or hell just buy a bare block that doesnt need machine work.

 

ive become a jb weld fanatic within the past couple years, works great and worth a shot just do like they said clean it real good and grind ya a groove

 

you have nothing to loose... ive seen JB weld hold more pressure than that... id go for it...

i once JB welded an aluminum A/C condensor in a dodge truck... held up for years....

 

will i have to worry bout heat expansion cracking it?