Okay. Just pulled the motor out yesterday, took the left head & intake off and found this: http://kuva1.kuvablogi.com/iso/img1583281.jpg Looks pretty o.k. to me, but how about this one: http://kuva1.kuvablogi.com/iso/img1583282.jpg Looks like there's some corrosion on the deck & around the intake valve. Being a newbie with the flatheads, I'm just asking does this look rebuildable to you? Seems like the engine has never been opened before, and I didn't see any cracks or something like that. Shitload of sludge, though... <!-- / message --><!-- sig -->
Take some good scrapers and wire brushes and clean the heck out of the valve area and the area between the valves and the bore. Bring some solvent with you to really clean it - many times you can see the cracks. If you can't find any cracks with the naked eye, then maybe pull the intake valves. Was the motor sitting somewhere where water could get into the intake/carb? If water didn't come down the intake, then the block may be cracked and it came in another way. If it is really a 255, then it has a Merc crank - which is worth about $250 - $400 depending on what shape it is in. Not matter what you think, you'll not know until the block has been hot tanked and magged at the very least. I also have them sonic tested if I'm going for a larger overbore. Also, many cracks can be fixed, if they know what they're doing. Dale
Kind of looks like water leaking in past the intake valve. Was the engine sitting outside? Anyway Dale is right. Get to work.
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