Posted by Scott Rukke on December 07, 2007 at 17:41:27 from (67.183.230.71):
Left my F-20 head at the local machine shop for a valve job and they mag fluxed it and found 2 cracks on the block side and 1 on the valve train side. Now the 2 on the block side are small and not near the combustion changer so I am sure they will be OK. I have seen several comments on here that cracks are common in the water jacket areas of the heads and don't really pose any issues. The one on the valve train side is approx. 2 inches long and it's hard to tell how deep it is. I planned on cutting a groove and brazing it closed. I am a former welder and see no issues with a repair by brazing. Anyone had any experience with these small hairline cracks in the F heads?
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Today's Featured Article - Hydraulic Basics - Part 2 - by Curtis Von Fange. In the last entry to this series we gave a brief overview of hydraulic system theory, its basic components and how it works. Now lets take a look at some general maintenance tips that will keep our system operating to its fullest potential. The two biggest enemies to a hydraulic system are dirt and water. Dirt can score the insides of cylinders, spool valves and pumps. Wate
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