potential 0331 crack
CF Veteran
Joined: May 2013
Posts: 1,056
Likes: 3
From: Washington, MO
Year: 2000
Model: Cherokee
Engine: 4.0
I ordered a sample kit from Blackstone, but I will probably have the head fixed before it gets here. does J&C have new castings? or are they just reconditioned? Do you know if they deal with tupy heads? I've heard that if it doesn't say tupy on a 0331 don't do it. Rotella you say? why? My Jeep isn't going anywhere like this. I'll be using the wife's minivan for a week or so. My friend knows that I tend to worry too much. He was probably just trying to get me to relax a bit. Once I told him about the coolant seeping from the crack he knew it was bad. I trust him we've been good friends for years.
Rotella is good oil people swear by.. I would run what you like though, just change that oil often so you can flush out any remains of antifreeze. Maybe look into a product that is specific for that.
Thread Starter
Newbie
Joined: Mar 2014
Posts: 11
Likes: 0
Model: Cherokee
I found a used TUPY head on CL for $175. Is it too much if I have to have it checked and cleaned also? Another salvage yard has three refurbished 0331's on the shelf. I'm trying to get them to confirm a TUPY mark or not. Those are $400. Clearwater has plenty for $455.
Senior Member
Joined: Jan 2012
Posts: 952
Likes: 4
Year: 2004
Model: Grand Cherokee
Engine: 2000 4.0
Consider buying a later model (tuppy) salvage engine. Rebuild your old engine as a short block and either save it for a spare or sell it and get most (if not all) of your money back!
CF Veteran
Joined: Jan 2013
Posts: 19,219
Likes: 45
From: west chester, pa
Year: 1999
Engine: 4.0
I have two tupy heads sitting on the shelf, just in case my xj and WJ blow thier 0331 heads lol. Expensive to get. I bought them for 175 bucks and 250 bucks... Low mileage though. 175 for 2004 109 k miles and 250 for 2006 56k miles
Thread Starter
Newbie
Joined: Mar 2014
Posts: 11
Likes: 0
Model: Cherokee
Salvage yard could not confirm any TUPY marks. I don't trust a used one on CL. Looks like Clearwater wins. Any advice in addition to saving alignment pins? I sure hope this is the last time I put big $$ into it for a while. I know it's a jeep and things happen, but c'mon. I'd like to drive it for a while.
Thread Starter
Newbie
Joined: Mar 2014
Posts: 11
Likes: 0
Model: Cherokee
Ordered my head from Clearwater today. They said it could be here as soon as Friday. That would be nice to have it for the weekend. So the oil in the sump showed no signs of contamination and the coolant seeped out of the crack super slowly. Looked like most of it was coming out the tailpipe. I think I caught it in time! I wonder if putting on the new intake had anything to do with the head finally cracking? I know 0331's crack all the time, but.....I'll keep ya posted.
CF Veteran
Joined: May 2013
Posts: 1,056
Likes: 3
From: Washington, MO
Year: 2000
Model: Cherokee
Engine: 4.0
Awesome.. you were luckier than I. Still flush that oil best you can, run a Wix filter and quality oil and you should be set. I would recommend a Fel-Pro HD head gasket too. Good luck on the head swap.. its not a big deal. Hollar if you get stuck.
Thread Starter
Newbie
Joined: Mar 2014
Posts: 11
Likes: 0
Model: Cherokee
New head is on. Runs like a champ! Now I just hope the bottom end holds up. Time will tell. Thanks for all your info. I will be continuing to visit this forum. The weather is getting warmer here in Michigan so I will be poking around my Jeep alot more. You guys be good. We'll talk later.
Member
Joined: Mar 2012
Posts: 160
Likes: 0
Model: Cherokee
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