Re: Run as is?
Here's the deal. #5 looks like water damage on the exhaust side. That means you need to go snooping for a leak.<br /><br />The exhaust divider plate and outer water cover are held on by 24 5/16-18 bolts. If your inner cowl support is any indication, getting these off will be slow and trying. You will need to lay the block on it's side and soak them with penetrating oil for a week, then apply heat to the block at each bolt (not the bolt) and then use an air inpact wrench on a low setting to "vibrate" them free without breaking them. If you don't have such a tool - take it to someone who does and explain that broken bolts are not an option. Hitting the top of the bolt straight down with some impact also helps break them free, sacrifice a small socket if needed or a wide punch.<br /><br />If one or more bolt does break, once those two plates are removed, enough will be sticking up to tig-weld (NOT stick weld) a 5/16-18 nut to the nub. 1st wire brush the nub to block junction with a toothbrush sized wire brush and soak each junction with a good penetrating oil for over a week. (remember you have all winter - don't hurry this) If someone here knows of a substance that specificly attacks the white suff - speak up. I use "Mousemilk" but there may be better out there.<br /><br />So.... once you have done that for a week - clean the nubs real good and have the nuts welded on, then beat the nuts side to side a bit without harming the gasket surfaces also hit them "in" with a hammer a bit. Again use heat on the block where the bolts insert and they WILL turn out.<br /><br />Any bolts that fail both the 1st try with the air wrench or the second try with the welded nut will need to go to the machine ship to get a 5/16-18 helicoil put in. But assume you can get 100% of them if you go slow enough. There's only 24 - each one is a reason to celebrate.<br /><br />Once you have the two plates off and the 24 bolts free, you'll see an "inner plate" around the exhaust ports with 23 bolts. I hate to say it but the same exact story applies only these 23 are even harder than the 1st 24. <br /><br />Getting these 47 bolts out of a salt water motor is prolly the toughest challenge in doing up an old inline. It may encourage you to know that I've never failed to get them all and in general I only have to heli-coil 2-3 bolts per salt water block. <br /><br />No harm in bagging up the pistons and stuff as described earlier. Don't pull the rings off the pistons yet though.<br /><br />But for now - your focus shifts to making the block 100% and fixing the leak that did this.<br /><br />Thn we can return to fix the damage and patch the old girl up a bit.<br /><br />-W