October 29th, 2009 by admin

Finding BMW Spares Can Be Easy
BMW is a well established brand in the automotive industry. This makes finding BMW spares easier for the back yard mechanic. The local breaker or salvage yard is a great place to start looking for that special part you might need. There are all kinds of undiscovered treasures lurking inside the gates of these facilities. Even better, the price of the salvage parts is usually much less than from other sources. There are some things to think about when you decide to purchase a BMW spare that is salvaged. Most important is the safety of the part. Anything structural should probably be purchased new. It is hard to tell what kind of microscopic damage could have happened during whatever accident brought the original car to the salvage. When it comes to safety, play it safe. Pay the extra money to purchase from a reputable dealer. An added bonus is that new purchases often come with a warranty. BMW spares can also be bought on the cheap over the internet. Online auction sites, like EBay, often offer the one part you must have. To save guard your investment in these parts, check the history of the seller. It is usually a good idea not to buy big ticket items from a seller you don t know. Buying BMW spares, or any automotive spares, online can also get you with hidden costs. Shipping and handling for the heavy parts can sometimes run more than the part itself. Search around, read the fine print, and compare the total cost with something you could get locally. You may be surprised to find out that local is actually the least expensive way of doing business. Because of the popularity of some automobiles, it is usually easy to find cars to fix up and the parts to do it with. BMW spares can be found online at shops, online at auction sites, and locally at breakers and salvage yards. Look around and find the best price for the part you need. Kathryn Lang is a freelance writer covering the motoring industry. She has written various articles on <a href="http://www.247spares.co.uk/bmw">BMW parts</a> and <a href="http://www.legalstreets.com/bmw/">BMW cars</a> in general.
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Tire Safety: How Old Is Too Old?
When thinking about tire safety, it is important to consider two things: age and use. Vehicles driven daily are typically driven 15,000 miles a year. But there are situations where cars put on even fewer miles. This includes: being driven only on the weekends, never driving in the rain, show cars, and cars that are stored for extended periods of time. So, some tires on these types of cars put on less than 100,000. But it doesn t mean that they are safe tires. Tires deteriorate over time and can age out wear out before they wear out. In a statement from the British Rubber Manufacturers Association (BRMA) issued on June 5, 2001 regarding the age of tires they state, “BRMA members strongly recommend that unused tires should not be put into service if they are over 6 years old and that all tires should be replaced 10 years from the date of their manufacture.” Tire age can be accelerated by a variety of environmental factors, such as sunlight exposure and coastal climates. Poor storage and infrequent use of your vehicle are other things that can accelerate tire age. If you keep your tires in ideal conditions, the tire age can go as high as 10 years from its manufacture date. But ideal conditions are the exception rather than the rule. And the worst part is that you cannot tell the safety of an old tire just by looking at it since there are no conclusive tests for the safety of tires without destroying the tire itself! Due to this, some European car manufacturers of high performance sports cars, coupes and sedans have hedged their bets, stating in their owners manuals that the tire age should reach no higher than 6 years. How Better Rubber Makes Tires That Are Safe There have been a lot of changes in rubber compounds since Charles Goodyear discovered how to cure rubber when he baked a combination of natural rubber and sulfur on his family s kitchen stove. Thus, he would convert an unappreciated raw material into many useful products. Goodyear cross-linked sulfur with polymers that, when exposed to heat, would help make rubber durable and at the same time maintain its elasticity. The main focus of new research has been finding tire age inhibitors. Sulfur molecules are one such tire age inhibitor that is reactivated every time they are exposed to heat, making the rubber harder. Nowadays, rubber in tires has oil in it that tends to migrate into the tires under tread/casing and evaporate into the air. In the process of this, the tire compound releases oil and gets harder. If you can t quite visualize this, go into any tire store and take a big whiff. You ll smell the oil there. Before curing, most tires are coated with a mold release agent that is makes it easier to remove from their mold after curing. If it s a little hard to visualize, think about spraying Pam on a fry pan before pouring on the batter for pancakes. This increases the safety of tires because some of the mold release agent gets cooked onto the surface of the cured tire, which prevents all the oil from evaporating. What Is The Right Tire Age? In most cases, most street tires are good for 6-8 years if maintained properly. Don t forget though that this includes the time the tires spent from the manufacturer s plant to the dealer to you. So, keep this in mind when you are determining tire age. Most tires get to you anywhere between 3-6 months. Some stay longer with the tire manufacturer, but generally all tires that go on your car are less than a year old. So, you should not get an old tire from any tire manufacturer. Which Tires Last Longest? If you want to buy a tire based on how long it will last, you have to consider thread compound. The more aggressive its compound the shorter tire life. Below is a list of tires from longest-lasting to shortest-lasting: Max Performance Ultra High Performance tires DOT-legal competition tires Bottom line: if you want to avoid safe tire issues go with tires that last long and properly maintain them.Bob Martin says Don t buy any new tires until you take a serious look at this today http://www.discount-tires-online.com/TireRatings/tire-rating-guide.htm This article is a copyrighted work and does not come with reprint or resale rights and may not be altered or changed in any way including the resource box. The site owner acknowledges that by using this article they accept this condition. The only exception being to bold the appropriate copy i.e. headlines and subhead text.
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Igniting a Spark
Your Volvo has thousands of parts in it. Some play a crucial role in the car, while others do not. Some are used all the time, while some are needed only for a specific time. One of the latter is your Volvo’s ignition coil. Also called a spark coil, the ignition coil is an induction coil in the automobile’s ignition system. The Volvo ignition coil transforms a storage battery’s 12 volts into the thousands (which sometimes could reach as high as 120,000 volts) needed to ignite the spark plugs. Invented by A. Kent Atwater in 1921, the ignition coil is a simple transformer that has two sides: the 12 volt or primary side and the high voltage or secondary side. The primary side contains a few hundred turns of a large diameter wire and it builds up the magnetic field in the coils. On the other hand, the high voltage side contains thousands of turns of small diameter wire. The coil uses electromagnetic induction to create the high voltage. When the voltage in the primary side is turned off, the collapsing magnetic field in the secondary side induces a voltage in the secondary side, producing thousands of volts. In older vehicles, a single, large ignition coil would serve all the spark plugs, distributing voltage via an ignition distributor. In modern systems, the distributor is omitted and ignition is controlled electronically, instead. Much smaller coils are used with one coil for each spark plug or one coil serving two spark plugs (so two coils in a four-cylinder car). These coils may be remote-mounted or they may be placed on top of the spark plug (coil-on-plug or direct injection). Where one coil serves two spark plugs (in two cylinders), it is through the “wasted spark” system. In this arrangement, the coil generates two sparks per cycle to both the cylinders. The fuel in the cylinder that is nearing the end of its compression stroke is ignited, whereas, the spark in its companion nearing the end of its exhaust stroke has no effect. The wasted spark system is more reliable than a single coil system with a distributor and cheaper than coil-on-plug. Where the coils are remote mounted, they may all be contained in a single molded block with multiple high-tension terminals. This is commonly called a coil-pack. Your Volvo ignition coils are part of a larger system, which is the ignition system. The ignition system is part of an even larger engine system. The ignition system’s primary responsibility is the timely burning of the fuel-air mixture in the engine. Your Volvo user’s manual would carry the recommended service interval for your ignition system, including your Volvo ignition coil. Your Volvo engine might run rough, buck, surge, stall or even get poor fuel economy. These are signs that your ignition system might need servicing as they are potentially an ignition system problem. When this happens, drive to the nearest Volvo dealership and have a qualified technician take a look around. Your Volvo engine might be in problem in the long run. John Garrett is an automobile mechanic who knows every crook and cranny of his truck. He's also a vintage car enthusiast , and he's dedicated to fixing and restoring them. He is a motorist who believes in continuous research and improvement.
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