Posted by BLINDHAWG on May 04, 2008 at 06:21:26 from (68.155.127.119):
In Reply to: 640 VALVE GUIDES posted by BLINDHAWG on April 30, 2008 at 16:35:36:
Update: took the head to an automotive machine shop Friday. I was told that inserts that I bought wouldn't work, bores need to be drilled out and new inserts pressed in. $85 plus parts. Note that all the intake guides had an insert installed at some time. I assumed the the exhaust guides had be left alone other than knurling as were the intakes. What confused me in the beginning was the flat top intake ends and the pointed (like the new inserts)exhaust guides. I'm thinking now that the pointed end of the intake guides were machined off when the inserts were added. This leads me to believe that all have inserts 3/4 x 2-1/2" exactly like the ones I bought. I going to try to pound them out with a driver and hammer as instructed in the shop manual. We'll see!!
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Today's Featured Article - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
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