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  #1  
Old 01-26-2016, 05:29 AM
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EarlJ EarlJ is offline
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Default Block work??

Hey guys, I'm rebuild a k301. I just completed the manual resurfacing of the head to get it dead flat. What I just discovered is the block seems to be warped, I assume this is because the engine was ran hot quite a few times prior to my a quiting it. I know a couple of you are expert machinists. Before I get stupid and take the side grinder to it, is there a way to flatten the block surface. With tools I have at home?; I can't afford a machine shop right now..
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Old 01-26-2016, 07:38 AM
64fleetside 64fleetside is offline
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I just did mine using the glass and sandpaper trick-good way to build up the forearms, that block is heavy.
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Old 01-26-2016, 09:16 AM
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How did you determine the block is warped? I'm sure you could straighten it up the same way as the head but its gonna take a while since its cast iron.
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Old 01-26-2016, 10:22 AM
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ol'George ol'George is offline
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I would be Leary working it back forth on a piece of glass !!
maybe a surface plate but your still going to get some rocking.
So much easier to put it on a B'port and take a small fly cut off the surface.
taking as little as it takes to make it flat, the littler the better.
Like others, how do you know it is not reasonably flat?
only real way is indicate it, or use a surface plate.
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Old 01-26-2016, 10:57 AM
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Terry C Terry C is offline
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Now that your head is reasonably flat, set the head on the block and just start
a couple of bolts to make sure it's sitting in the right place. Take a .003 or so
feeler guage and find where the high and low parts are. Then take a large file
and start hitting the high spots. Be careful, I am always leary of telling people things that require some touch cause I don't know their ability
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Old 01-26-2016, 11:36 AM
64fleetside 64fleetside is offline
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Mine had been run a while with blown gasket, checked using a straight edge.'Yeah the block tries to rock but some oil on the paper helps a lot.
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Old 01-26-2016, 12:25 PM
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If you have a large honing stone I would run that over the block to knock off any "blisters" around the holes. Then set the now polished and presumably flat head on the block and check with feeler gauges as already suggested. Then if it is not flat you can figure out what to do next.
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Old 01-26-2016, 05:51 PM
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a straight edge and a feeler gauge is what you need. are you boring it? grinding valves? just take it in and do right. the end result is worth it
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