| 35gal | -- 02-05-2010 @ 5:55 PM |
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I'm replacing a few old valves with new ones in my 21 stud engine. Is there anyway to grind the valve ends for proper clearance with out a special tool to keep the stem square. I hate to use adjustable tappets but I can see no other way to do the job. My concern with the adj tappets is the bolt in the end could come loose.
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| TomO | -- 02-06-2010 @ 8:45 AM |
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Good quality adjustable lifters are available from C&G, Reds Headers and other suppliers. I have had adjustable lifters in my car for over 30 years and have not had one screw come loose or had to readjust any of the tappets. That said, a good automotive machine shop can grind off the amount needed for clearance on your valves. You will have to balance the cost of the machine shop to the cost of the adjustable lifters. Also if you are going to the trouble of replacing a couple of valves, I would invest in having all of the valves ground and the seats refaced. If a few valves are burned enough for replacement the others are not far behind. Tom
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| supereal | -- 02-06-2010 @ 11:59 AM |
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There is no practical way to grind the valve stems without a machine. The ends must be absolutely square to maintain the clearance at the face of the tappets. Good quality adjustable lifters are not cheap, at about $200/set,but they are worth the cost. If you have a noisy valve, you can just pull the intake, and set it. We haven't had any problems with the adjusters coming loose. Just be sure to order the special wrench when you buy them.
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