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Sleeving the block

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Old Nov 15, 2002 | 12:28 PM
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Default Sleeving the block

I've search around and I can't find out what is the process. What is it and what is done? I know it reinforces the block under high boost but do they bore it out and slid something in or what?
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Old Nov 15, 2002 | 01:08 PM
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The block itself is aluminum, the cylinders (a.k.a. sleeves) are iron. Having the block sleeved means you replace the stock cylinders with new, stronger ones.
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Old Nov 15, 2002 | 01:17 PM
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Originally posted by MrFatBooty
The block itself is aluminum, the cylinders (a.k.a. sleeves) are iron. Having the block sleeved means you replace the stock cylinders with new, stronger ones.
What is the process in having it sleeved, what is actually done the block?
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Old Nov 15, 2002 | 01:23 PM
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The old sleeves are cut out and the new ones are machined into place. It's not that complicated really, it just requires taking apart the entire motor and precision machining skills.
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Old Nov 15, 2002 | 01:54 PM
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Well I already have the motor broke down to block, head, and tranny so I think I may just go have that done. What are some prices to have that done if you know?
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Old Nov 15, 2002 | 02:05 PM
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Average sleeving cost for GE sleeves is about $600-700. Dartons cost a bit more, but if you kill one sleeve, it can be replaced without having to touch the other 3. If you mess up a GE sleeve, you'll have to either bore all 4 or replace all 4.
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Old Nov 16, 2002 | 12:31 PM
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What kind of materials are available for resleeving? Would titanium be possible?
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Old Nov 16, 2002 | 02:16 PM
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Hahaha, no. The sleeves have to be iron.
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Old Nov 16, 2002 | 02:19 PM
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I'd hate to see the bill for titanium sleeves...
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Old Nov 17, 2002 | 07:33 AM
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Titanium sleeves would also "grab" your pistons. Titanium is a very strong, brittle metal, but it tends to like to stick to other metals. This is why you're unlikely to see pure titanium rods or pistons. It's always doped with aluminum, or some other metal. The NSX for example has an aluminum/titanium alloy for its rods.

As for the sleeving process they do it two ways. One, they cut out your old sleeves, heat up the block, freeze the new sleeves and press them in. When the temperatures even out, there's so much pressure they won't fall out. The other way is to cut out the sleeve and surrounding aluminum. The new all iron cylinders are welded into place.

My question is, about how much would the labor be for the sleeves to be installed? Provided of course the block was delivered fully torn down.
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