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Case of the missing piston

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Old Apr 14, 2012 | 05:46 PM
  #46  
jarhead0415's Avatar
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From: Prescott, AZ
Year: 1994
Model: Cherokee
Engine: 4.0
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I'm in the same boat man, mine happened yesterday and I'm about to go pull the pan off to take a looksee. Best of luck to you, hope you can find a block.
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Old Apr 16, 2012 | 11:03 PM
  #47  
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From: Richlands VA
Year: 1997
Model: Cherokee
Engine: 4.0
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How reliable would it be if I sleeve the block for a four inch piston and built a 5.0 stroker?
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Old Apr 16, 2012 | 11:08 PM
  #48  
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From: Prescott, AZ
Year: 1994
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I've heard that the cylinder walls are really thin when bored over that big. I would just do a 4.7 IMO.
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Old Apr 16, 2012 | 11:24 PM
  #49  
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From: Richlands VA
Year: 1997
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Well the machine shop said they could sleeve it so if I have to sleeve it why not go all the way right? The only thing is I don't want it to crap out in like 50k miles and be building another motor just don't know what to do
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Old Apr 16, 2012 | 11:50 PM
  #50  
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From: Prescott, AZ
Year: 1994
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The only times I've seen 5.0's being built is for prerunners, jeepspeed, those sort of applications. And I would imagine they rebuild frequently.

If you've got the money, then go for it.

IMO, i would only go up to a 4.7, but that's just my opinion. RPM Machine has a 4.5 kit for $1300 and ive heard good things about it. Thinkin about doing it while ive got my motor out.
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Old Apr 17, 2012 | 12:08 AM
  #51  
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From: Richlands VA
Year: 1997
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In either case im kinda afraid of sleeping it but from all the research I've done you have to sleeve it to go with a 5.0 stroker but I'm not sure of the reliability of sleeping it especially with the hole I have in the cylinder being in the water jacket
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Old Apr 17, 2012 | 12:40 AM
  #52  
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From: Prescott, AZ
Year: 1994
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Engine: 4.0
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Oh ****, yeah I forgot about that. I would definitely NOT stroke it like that, you'll probably have the same thing happen pretty quickly. Sleeve it and keep it stock, or get a new block and stroke it. I would just toss the block period.
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Old Apr 17, 2012 | 02:56 AM
  #53  
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91-95 are strong blocks as well the 96 to 01 blocks have a girdle for extra support. If you find a 91-95 block you can source a girdle and use washers to clear it under the increased stroked crank. Jeepstrokers.com have all sorts of info on it.

Hell if you find a 91-95 engine use the head too. It has the best flow. The intake manifold you want is the 99+ it also has the best flow cause jeep used it to counteract the stricter emissions crap they were forced to change to.
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Old Apr 25, 2012 | 08:56 PM
  #54  
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From: Richlands VA
Year: 1997
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Engine: 4.0
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Will a 318 bolt to my aw4? It seems I can find them all day long but can't find a 4.0 block to save my life lol
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Old Apr 25, 2012 | 09:15 PM
  #55  
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From: Oroville, CA
Year: 1995
Model: Grand Cherokee
Engine: 4.0 with all of the noise and clatter
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A 318 will not bolt up to an AW4.
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Old May 3, 2012 | 05:28 PM
  #56  
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From: Richlands VA
Year: 1997
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Thinking of selling my jeep I'm kinda tired of messing with it and getting nowhere. It's a 97 sport 163xxx miles 4.0 aw4 4 door everything is good minus the engine block if anyone is interested in making an offer
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Old May 3, 2012 | 06:20 PM
  #57  
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From: Fauquier County, Virginia
Year: 1991
Model: Cherokee
Engine: I-6 4.0 HO
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Don't give up on it. I almost gave up on my '91 XJ once. Glad I didn't.
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Old May 3, 2012 | 06:35 PM
  #58  
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From: Richlands VA
Year: 1997
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Well I can't find a block here so I think I'm bout done with it anyways I need a truck
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Old May 3, 2012 | 08:54 PM
  #59  
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From: Nor-Cal Coast
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
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Did you try WANTED on Craig's list? Free and maybe worth a shot. Here I'm smack between 3 towns, so its usually 80 miles for me to look at anything....
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Old May 3, 2012 | 09:06 PM
  #60  
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From: Richlands VA
Year: 1997
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Engine: 4.0
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Yeah most things I find is complete motors for 93 and down and I can't use nothing but the block for my 97 and it's 100+ miles just to look at it
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