Join Date: Mar 2010
Location: Mount Vernon, WA, USA
Re: changing spark plugs
Thanks JayJay, I was thinking about saying something but it was divergent and I thought I might cloud things up. Neverseize and Anti seize are compounds intended to keep two parts from becoming one under stress conditions such as heat or two fittings that can gall such as same types of stainless steel threaded together. Usually made from aluminum, nickel or some such compound. People use to put it on spark plugs, it messes with head conduction though and changes the needed torque value for installation. It is now considered poor practice to use it on spark plugs and as much as you may be tempted never use it on wheel lug bolts or nuts, cars or bikes. Just wire brush them. Most vehicle manuals will tell you which bolts need neversieze and which need a thread lock compound. This will be reflected in given torque values also. Those of you who have worked on cylinder heads will remember about the use of oil or lube on the head bolts as part of the process. This is a specific use and part of the plan. As a lube neversieze lowers needed torque by 15 to 30%. (same with any other fastener). I was in a jam with that spark plug and I did not want to do any more thread damage and when that plug comes out next time, I want all the cylinder head threads to stay where they should. Your typical loctite thread locker is nasty stuff, Loctite brand makes 222, lavender for 1/4" (6mm) and less bolts, 242 blue for "normal" use and the hard hitter 262 red for permanent installation. All, especially the red, can be loosened with heat. Generally about 320*F. Some fasteners on the BMW use red, (some blue) and one is the drive shaft housing pivit pins just ahead of the rear boot. This has to be heated or you will tear the threads taking it apart. No, thread fastener on the spark plug is not the way to go.
If you plan on working on your bike you need at least two torque wrenches, one in the range of 0-25 ft/lbs and another that goes 0-100 or so. You can't get good enough accuracy out of a high range unit to do the small stuff with confidence. And please don't work on your friend with a $9 torque wrench. Get a good brand name used one on Craig's list or some save your shop money up. Of course you are talking to a tool freak. See how easy I get off track?
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K13S & DR650 (gone through a few RT's)
Mount Vernon Cannon Works