H Compression Lose

Posted by IndianaRed on July 05, 2006 at 11:43:05 from (24.166.26.217):

Well, crud. Put my H back together and when she started up I was pretty please with myself. She was missing some but figured it just wasn't timed right. Pulled spark plugs and did just a simple finger compression test and #1 is way bad. I get both compressions, but very weak. Along with the slight coolant leak I noticed at bottom front of block when oil pan was out while I was putting new piston and rod bearings in, and the small amount of water already in oil after just an hour or so running, I'm no longer very pleased with myself. Must have a crack but don't know where. Have read tons of posts here trying to find common areas, and guess it could be anywhere. #1 had a really bad piston, half gone, that I replaced. Sleeve looked ok to my untrained eye. Head looked good after I cleaned it up, no cracks that I could see by looking real hard. Can't afford yet to magnaflux. New head gasket set installed. Had difficulty with one head bolts not having enough bolt to grap onto and knew I would have to take head off again and fix that, but surely that can't be doing all this. I flipped the bolt upside down, (I know, I know) and got it to grab and torque to 70. When running now no smoke at all, white, blue, or black, just big miss. As low as the compression seems to be on my finger, must be pretty bad. Want to at least try to JB weld, if I could find the crack. Guess I should open water panels and look in at cylinder walls? Started to early on just to check, and the very first bolt head came right off with not much pressure turning it at all. Have since read that's not uncommon, so that could just be opening another can of worms. I'm not gonna give up on her, as poor as I am. I'll bring this old iron back one way or another, just may be next decade before I'm done! Any tips on finding this crack would surely be appreciated. Would be difficult to pull block with my limited shop and tools.

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