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Power Strokes
6.4 Tech
Cracked piston
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[QUOTE="kleake, post: 1505261, member: 25987"] No, the heads were new less than a year ago, so I inspected them and checked for flatness. I did have them check the block, but all was good there so a little buffing wheel to clean them up and all is good. Gotta be careful with the buffing wheel as you don't want to take off any metal, just clean up the surface to the gasket has a good clean surface to seal to. The machine shop does a little boring until all is cleaned up and then they tell you what size pistons to get. Once you have those, take them to the machine shop and they will match the bore to the piston. This way your tolerances will be exactly what the piston mfg wants. Machine shop also installed my cam bearings and had them check the crank for those bearings. In my case even with 250k on it, the crank was perfect. Yes, I have heard of the issue with the newer rockers causing issues, and THAT is one issue I had on my first head gasket replacement at 225k. It's a long thread, but I detailed it out as much as I could [URL="http://powerstrokearmy.com/forums/showthread.php?t=73092"] here[/URL]. The issues started at post #80... You will only have the problem if you have an early job1 truck and you change the rockers, just change the push rods at the same time and all will be fine. [/QUOTE]
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