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I'm in the process of a rebuild and the block Deck has some superficial scratches on it (can feel one or two with my fingernail but none catch). I have no problem spending the money to have it surfaced a couple thou, but I've heard about concerns of messing with the timing chain geometry.
Just looking for some opinions on what most people would do in this situation. I'm leaning towards having the shop surface the deck lightly when they're honing the FRM cylinders (shop know what they're doing there).
Block has 120k miles on it. Had to strip the block down to repair an oil jet boss that snapped. While in there I'm looking to improve the oil consumption which is slightly on the higher end and do a proper rebuild with new piston rings.
Since I'm using new rings, I'm getting the block honed to set them properly.
Hit up @fatjoe10 for some advice. He did a recent F24 build with minimal block prep. Apparently the FRM liners in the cylinders don't require much prep.
As for the block deck resurfacing, unless it requires taking off material can't you just sand it smooth with sandpaper and a large sanding block?
Do not hone the bores. They are fine. If you want to, use a silicon carbide dingle berry hone. 800 grit or finer, and very slowly and carefully run it up and down the bore using lots of oil. Then clean the bores with hot soapy water until a white rag comes out clean. Then rinse and oil the bores immediately with assembly lube. More important is to get the ring gap and orientation as close to perfect as possible. This is what will help your oil consumption the most, along with a proper break in.
I wouldn't deck the head, the head gasket will fill in any gaps that don't catch your fingernail. Look at the recessed tabs on the block, that's how much you can deck the block. So practically no material can be removed. Maybe you can get away with .001". If your block and head aren't warped you'll be fine.
Do not hone the bores. They are fine. If you want to, use a silicon carbide dingle berry hone. 800 grit or finer, and very slowly and carefully run it up and down the bore using lots of oil. Then clean the bores with hot soapy water until a white rag comes out clean. Then rinse and oil the bores immediately with assembly lube. More important is to get the ring gap and orientation as close to perfect as possible. This is what will help your oil consumption the most, along with a proper break in.
I wouldn't deck the head, the head gasket will fill in any gaps that don't catch your fingernail. Look at the recessed tabs on the block, that's how much you can deck the block. So practically no material can be removed. Maybe you can get away with .001". If your block and head aren't warped you'll be fine.
What are you smoking? You obviously have never decked a head or a F series block. You can take off a LOT more than .001" lol
Now whether or not his deck surface needs to be skimmed is questionable but generally a surface finish of 30Ra or less is desirable for an MLS gasket.
What are you smoking? You obviously have never decked a head or a F series block. You can take off a LOT more than .001" lol
Now whether or not his deck surface needs to be skimmed is questionable but generally a surface finish of 30Ra or less is desirable for an MLS gasket.
You can do whatever you want, doesn't mean it's going to work well afterwards. If you look at the lower right hand corner of the block, that little recessed circle with an island in the middle is a visual guide for how much you can deck the block. Almost nothing.
You can do whatever you want, doesn't mean it's going to work well afterwards. If you look at the lower right hand corner of the block, that little recessed circle with an island in the middle is a visual guide for how much you can deck the block. Almost nothing.
You can do whatever you want, doesn't mean it's going to work well afterwards. If you look at the lower right hand corner of the block, that little recessed circle with an island in the middle is a visual guide for how much you can deck the block. Almost nothing.
Doesn't mean its going to work well? Well my headgasket seals.... I've got plenty of experience to back up my claim. My current block has been decked .010" and the head has been decked .025"...neither are down to the visual guide. Since you like to give all this "advice" lets hear what numbers you've decked them down to....I'll wait.
Resurface Block Deck?
