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Old 12-23-2010, 04:58 PM   #1
drewcipher88's Avatar
Join Date: Nov 2010
Posts: 58
Cracked block

So when I finally got around to changing my cracked header out for a new one, I pulled both manifolds off to discover 2 very small hairline cracks in my block right above the 2nd and 3rd back freeze plugs right there. It's very minimal leaking for now, but I am curious about my options here. Has anyone ever used JB Weld or something like that to fix this? I've heard cast iron welding is very hard and I would need a shop to do that. Am I SOL? Input appreciated. Also, whats the stock PSI rating of the radiator cap on these I6s?

97 Wrangler Sport, 4" of random lift, 33" BFG KM1s, steel bumpers
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Old 12-23-2010, 05:10 PM   #2
Join Date: Dec 2010
Posts: 37
Beau, I have used some stuff called Devcon on that very engine. As far as I know the Jeep is still running. Mine froze up and pushed out that side right at the freeze plugs.
2000 Jeep wrangler 4.0 auto Vietnam helicopter pilot, Avid car collector, Fanatic about maintenance.
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