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?
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.
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.
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.
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.
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.


