Join Date: Sep 1999
Location: San Diego, CA
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Re: Learning new vocabulary
That's quite an open ended question, but I'll give you as much as I can:
flange: Typically this is found on a pipe or tubing. It is the rim or collar at the end of the tube. There are many places where something can be called a flange. At the end of an exhaust header the pipe is flanged to mate to the exhaust pipe which is also flanged. At the end of an axle housing there is usually a flange. A flared brake line is basically flanged.
soa: This is an acronym for Spring Over Axle. Take a look at a stock CJ or YJ and you will see that the spring hangs from the axle and is underneath. Picture setting the springs on top of the axle (it will raise vehicle 5 or so inches). People like them for large lift, but retaining flexy springs.
sye: Another Acronym....Slip Yoke Eliminator. If you look at a wrangler's rear drive shaft is attatches at the rear in a yoke with the U-joint. The front of the shaft slips inside the t-case and slides in and out as the rear axle moves up and down. A SYE kit replaces the tailhousing of the t-case with a fixed yoke similar to the rear. Then a drive shaft with a slip joint is used to allow the axle to move. It allows the use of a longer rear drive shaft to eliminate vibrations on lifted wranglers (usually used on lifts of 4" or more).
bushing v. bearing: A bushing can act like a bearing and provide a minimum of friction between two surfaces. They are commonly used to fill the space of two different diameters. The best example I can think of is on my wood shaper. Mine has a 1/2" bolt (spindle). My cutters have a 3/4" bore. I use a bushing that has a 3/4" outside diameter and 1/2" inside diameter. It basically is like a section of pipe cut off. Bearings can take several forms. Usually they are not one piece like a bushing. There are ball bearings, roller bearings, main bearings. The purpose of a bearing is to reduce friction between two moving surfaces.
cylinder head: The cylinder head bolts to the top of the block. It houses the spark plugs, top of the combustion chamber, valves, valve springs, rockers. The intake and exhaust manifold bolt to the head. If you are having problems with lifters, those are in the block, but can be accessed by removing the head. I wouldn't recommend doing this until you better understand the parts/process better. The lifters basically ride the cam shaft and push against push rods that control the valves. Get a book at the library that shows a typical engine and how it works. Most have the same basic components.
258 4.0 Head/MPI,NV4500,D300,4.10's,HS9500