Engine Cylinder Sleeves - Better or Worse? - Jeep Wrangler Forum

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Old 01-15-2011, 10:14 AM   #1
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Question Engine Cylinder Sleeves - Better or Worse?

I'm doing a complete overhaul on my '87 Wrangler, 4.2L engine. I took the block to a machinest to have the cylinders bored out, since with over 200k miles, they're too worn in to just hone. To 'cut' a story short, he calls to tell me that his machine threw a blade, damaging my #1 cylinder and destryoying my #2. He assured me that he will take care of it by installing 'sleeves' in these two cylinders. He not only adding 4 days to the job, but now has me concerned regarding the integrity of the completed engine. I plan on driving this baby to 500k and want to know if these sleeves will make that more or less likley.

1987 Wrangler, 4.2L - 258 C.I. (Soon to be a 259!)
Rebuilding w/New:
Pistons, Pins and Rings
Camshaft, Lifters and Pushrods
Flywheel and Clutch
Both Timing Gears & Chain
Oil Pump & Pressure Sensor
Freeze Plugs, Hoses and
All gaskets, bearings, seals, etc.

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Old 01-15-2011, 10:27 AM   #2
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Here is some info on them if you didn't know. what kind does he want to put in?

Cylinder sleeves and cylinder wall Video

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Old 01-15-2011, 10:55 AM   #3
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Different Types of Cylinder Sleeves?

Thanks 4Jeepn, for responding so quickly.
I didn't know different types were available and he didn't specify. What should I be asking for? I want what's best for my Baby, and he owes me.
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Old 01-15-2011, 11:39 AM   #4
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Not sure which are better, I think from the sound of it the dry one's but I have no clue. I would talk to him a bit, more, I would also want a darn good warranty on the work. Any chance he could get a good low miles block for you instead.
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Old 01-15-2011, 02:23 PM   #5
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Sleeving the cylinder is plenty reliable as long as the person doing the work knows how to do it. If done well you will notice no diference in drivability. Also they sleeve top fuel dragsters sometimes so u know they can handle some abuse haha.
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