I've searched with mixed results so here goes...........

I have no experience with sleeving and don't know any one who has done it. This is on an almost new (3000 k) L31 shortblock (4 bolt) with one cylinder cracked through to the water jacket. All cylinders are basically new except for this one of course.

Would this procedure hold up in a mild (400ish hp) engine that I would like to run track days with............

or should I use another block I have that is a 2 bolt and have all cylinders honed on it?

Both blocks have no special work done to them. Both are one piece seal roller cam blocks.

Thanks.........DM

 

there's nothing wrong with sleeves, only thing you'd want to look at is cost over getting another block.

 

I can't remember how much it costs to do a sleeve. I've had a couple done on other engines. One cylinder isn't bad. Getting 2 done would be moderate. If 3 sleeves are needed, it might be better to find another block.

Sleeving is also a way to bring a block back up to stock specs. For most engines this isn't really worth it however if you had lets say a numbers matching car or raced in a class where stock parts are required, it could be cheaper to sleeve an entire block that find another replacement.

My Dart block was around $2500. It would be cheaper to put 8 new sleeves in it than buy another block if I ever bored it out to the maximum then needed repairs.

 

I have talked with a machine shop and it's around a $100. He said he machines so far down and leaves a shoulder to keep the sleeve from going too far into the block. It's only one cylinder so it will be fairly cheap if that is all it will take to fix it. And.....like I said it's an almost new unit. I just did not know if this was an accepted procedure for a cracked wall (not just scored badly).

Thanks guys.

 

$100 bucks sounds cheap. Make sure it includes milling the decks true, which you'll want to have done whether it's being sleeved or not. Also make sure the guy has a good reputation in the performance industry.

 

Thanks I'll remember that.

 

Typically, a resleeve should include boring out the cylinder for the new sleeve, pressing in the sleeve, milling it down to the deck surface then boring out the cylinder to match the bore of the others. Once it's done, it's hard to tell what cylinder was repaired. Any other machine work required will be extra.

 

Kool................now I know what to check for as far as work performed by the machine shop.

Thanks guys