Re: re- sleaving case vac engine.

Posted by Keith-OR on June 27, 2004 at 23:35:05 from (205.188.116.201):

In Reply to: re- sleaving case vac engine. posted by andrew on June 27, 2004 at 18:50:16:

here is a post from the archives:
HTH
Posted by ZANE on December 21, 2002 at 04:53:18 from (205.188.209.173):

Do not try to peel out the sleeves if they are cast iron. There is a process that cab be used to peel the .040 steel sleeves by starting a screwdriver sharpened to one side to start the sleeve peeling . If this is tried on the cast iron sleeve I just about guarentee a broken block.

Their is a tool that you can use to drive the sleeves out of the bore with.It is best to have the crankshaft removed to insure that you don't damage the journals by striking them.you could have a maching shop fabricate one by turning a piece of round stock just a little larger than the bore of the cylinders.Firts turn a piece of stock of about 3/4" to about .020" smaller than the bore, then turn half of the blank to about .020" smaller than the bore of the sleeves.Cut about 3/4" from each side of the turned driver so that it will go into the bottom of the sleeve if the crankshaft is still in the engine and with a 10 or 12 lb hammer and a large drift against the tool drive them out the top of the cylinder. Or you can do it the hard way and fabricate a threaded thingy to straddle the top of the cylinder and use it to crank the sleeve out. Not recommended by me!

If it is the thin cast iron .040 sleeve the best way to remove them is to use a cutting torch or heating torch to heat a portion of the sleeve from top to bottom red hot and then allow to cool to room temperature and then the sleeve will almost fall out. This will not damage the cylinder wall as long as you don�t cut through the sleeve and heat the cylinder wall.

If you are a pretty good welder their is an easier way to get the old sleeves out. Lay the block on it's side and with a 6011 1/8" rod run a cold bead from the bottom of each sleeve to the top.Do this about 3 times in each sleeve and allow them to cool to the touch.You can then either pull them out with your hand or catch the bottom edge with a large screwdriver and tap them out. Be carefull not to weld through the old sleeve. After you get the old sleeves out lightly hone or sand the bore where the heat from the welding may have cooked the carbon to the bore slightly.Don't hone much. The new sleeves must have an interference fit.

Don't try to drive the new sleeves in with the tool that you fabricated to pull them out with as that tool will split the sleeves when you try to drive them back in.

You can take a piece of flat plate of at least 1/2" thick and that will completely cover the top of the new sleeve plus about 1" or so and drive the new sleeves down till they are even with the deck of the block.Some of these N guys will tell you to freeze the sleeves etc but it is not necessary.I have done literley hundreds and I quit that freezing bit years ago. Can't tell the difference.

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