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Monday, December 28, 2015
Tuesday, December 22, 2015
Monday, December 21, 2015
Monday, December 14, 2015
Monday, December 07, 2015
Friday, December 04, 2015
Monthly question for Dec 2015
The above warning light came on on a late model engine. What is this light(meaning of the symbol) telling you? Post your answer to the mailing list!
Monday, November 30, 2015
Monday, November 23, 2015
Thursday, November 19, 2015
Monday, November 16, 2015
Monday, November 09, 2015
Friday, November 06, 2015
monthly question for nov 2015
What are those penny-sized dots running across many rear bumpers that you on so many cars in parking lots?
post your answers to the list!
post your answers to the list!
Monday, November 02, 2015
Monday, October 26, 2015
Monday, October 19, 2015
Tuesday, October 13, 2015
Monday, October 12, 2015
Wednesday, October 07, 2015
Monday, October 05, 2015
Monday, September 21, 2015
Saturday, September 19, 2015
Thursday, September 03, 2015
Monthly question Sept. 2015
A ___________ piston is an internal combustion engine piston cast using a ______________ alloy–that is, a metallic alloy which has a composition beyond the eutectic point. _______ pistons are made of an aluminum alloy which has much more silicon present than is soluble in aluminum at the operating temperature.
________ aluminum has a lower coefficient of thermal expansion, which allows engine designers to specify much tighter tolerances. The most common material used for automotive pistons is aluminum due to its light weight, low cost, and acceptable strength. Although other elements may be present in smaller amounts, the alloying element of concern in aluminum for pistons is silicon. The point at which silicon is fully and exactly soluble in aluminum at operating temperatures is around 12%. Either more or less silicon than this will result in two separate phases in the solidified crystal structure of the metal. This is very common. When significantly more silicon is added to the aluminum than 12%, the properties of the aluminum change in a way that is useful for the purposes of pistons for combustion engines. However, at a blend of 25% silicon there is a significant reduction of strength in the metal, so _______ pistons commonly use a level of silicon between 16% and 19%. Special moulds, casting, and cooling techniques are required to obtain uniformly dispersed silicon particles throughout the piston material.
______ pistons are stronger than more common cast aluminum pistons and used in many high performance applications. They are not as strong as forged pistons, but are much lower cost due to being cast.
Question: What is the name(fill in the blanks above) of this type of piston, being described above and pictured below?
Post your answer to the list!
________ aluminum has a lower coefficient of thermal expansion, which allows engine designers to specify much tighter tolerances. The most common material used for automotive pistons is aluminum due to its light weight, low cost, and acceptable strength. Although other elements may be present in smaller amounts, the alloying element of concern in aluminum for pistons is silicon. The point at which silicon is fully and exactly soluble in aluminum at operating temperatures is around 12%. Either more or less silicon than this will result in two separate phases in the solidified crystal structure of the metal. This is very common. When significantly more silicon is added to the aluminum than 12%, the properties of the aluminum change in a way that is useful for the purposes of pistons for combustion engines. However, at a blend of 25% silicon there is a significant reduction of strength in the metal, so _______ pistons commonly use a level of silicon between 16% and 19%. Special moulds, casting, and cooling techniques are required to obtain uniformly dispersed silicon particles throughout the piston material.
______ pistons are stronger than more common cast aluminum pistons and used in many high performance applications. They are not as strong as forged pistons, but are much lower cost due to being cast.
Question: What is the name(fill in the blanks above) of this type of piston, being described above and pictured below?
Post your answer to the list!
Wednesday, August 26, 2015
Monday, August 10, 2015
Thursday, August 06, 2015
Monday, August 03, 2015
Monday, July 27, 2015
Monday, July 20, 2015
Wednesday, July 15, 2015
Monday, July 13, 2015
Monday, July 06, 2015
Thursday, July 02, 2015
Monday, June 29, 2015
Monday, June 22, 2015
Monday, June 15, 2015
Monday, June 08, 2015
Used parts are often called LKQ- What is LKQ?
Used parts are often called LKQ for like kind & quality. LKQ parts are factory parts that come from salvaged vehicles and resold. LKQ parts are OEM parts that have been taken from another vehicle that is of the same make, model and body style. This "other vehicle" just happens to be in a junk yard.
It is a vehicle just like the one being repaired but it has been totaled and the salvage yard is selling the good parts from the vehicle. You are entitled to having your car returned to pre-loss condition under your insurance policy. The question arises,"Which is better for your car, the use of OEM (Original Equipment) or After-Market (non-Original Equipment) parts?"The answer: The parts used must be of L.K.Q. (Like Kind and Quality). It is the role of the collision repair facility to act as advocate and advisor, negotiating with the insurance company what is best for you. Remember that they are working for you, not the insurance company. Another thing to remember is that the insurance company is responsible for returning the vehicle to pre-loss condition. This means that if your car is five years old with 90,000 miles on it, the insurance company will do what is best based on the value and condition of the vehicle to return it to that value. This scenario may dictate the use of a less expensive after-market part of comparable quality. Comparable quality is defined as having a correct fit and OEM crashworthiness. If the part fails to match these qualifications, the insurance company may elect to go with a good used part off the same year, make, and model car, which would return the vehicle to pre-loss condition.
Remember, the insurance company is obliged to return the vehicle to its present value, not its value when it was new!
Next week , do you know what "betterment" refers to? Come back here to find out!
Monday, June 01, 2015
Dangers of filling a gas can
Gas cans should always be placed on the ground when filling. Never fill any portable container (regardless of material) while it is inside your car or pickup bed. Do you know why?
An approved gasoline container also dissipates static electricity, as long as it is placed on the pavement before filling begins. Leave the can in the trunk or pickup box, however, and it is a different story. A trunk liner, bed mat or bed liner insulates the vehicle from the ground and the static buildup of electricity has nowhere to go. Static buildup occurs and if it releases, the resulting spark can set off the gasoline.
The static comes from the gasoline itself. As the fuel flows through the hose and nozzle, static electricity builds up on the gasoline. This charge takes several seconds to dissipate after the gas is poured into the can. If the can is insulated from ground, the spark cannot dissipate and it builds up until discharge occurs.
According to Chevron, the condition most likely to lead to spark discharge is the filling of a metal container that is placed upon the plastic bedliner of a pickup. In their experiments, this situation resulted in the most fires. They are also quick to point out that while static discharge in metal containers caused the most fires, plastic containers are not immune.Be safe, Place the container on the ground before filling to allow static buildup to dissipate. Make sure the filler nozzle touches the rim of the filler opening to help static electricity dissipate.
Monday, May 25, 2015
Monday, May 18, 2015
Monday, May 11, 2015
Friday, May 08, 2015
Wednesday, May 06, 2015
Tuesday, May 05, 2015
Monday, May 04, 2015
Thursday, April 30, 2015
Monday, April 27, 2015
Monday, April 20, 2015
Sunday, April 19, 2015
Saturday, April 18, 2015
Friday, April 17, 2015
Thursday, April 16, 2015
Monday, April 13, 2015
Monday, April 06, 2015
Thursday, April 02, 2015
Monday, March 30, 2015
Monday, March 23, 2015
Monday, March 16, 2015
Monday, March 09, 2015
Thursday, March 05, 2015
Monday, March 02, 2015
Monday, February 23, 2015
Monday, February 16, 2015
Monday, February 09, 2015
Thursday, February 05, 2015
Monday, February 02, 2015
Monday, January 26, 2015
Monday, January 19, 2015
Wednesday, January 14, 2015
Monday, January 12, 2015
Monday, January 05, 2015
Thursday, January 01, 2015
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