Car And Truck Brake Parts

Front Drilled

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Front Drilled
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Offset means what?

Offset is normally stamped or engraved into the wheel and is measured in millimeters of ET: ET is the short form of the German word Einpresstiefe which translates as insertion depth.

Offset is the distance between the hub mounting face at the back of the wheel and the wheel's centerline.

Negative Offset wheels have their mounting face toward the rear of the wheel - powerful rear-wheel drive cars often have wheels with negative offset.

Zero Offset wheels have their mounting face even with the centerline of the wheel and are by definition ET0.

Positive Offset wheels have their mounting face toward the front face of the wheel. Front wheel drive vehicles usually have positive ET wheels. Eighties & Nineties Volkswagen wheels are generally ET38.

PCD means what?

PCD stands for pitch circle diameter and is the diameter of a circle drawn through the centre of your wheel's bolt holes. P.C.D. is measured in millimeters and also indicate the number of studs or bolts the wheel will have. Volkswagen Alloy Wheels are usually either 4x100: i.e. 4 bolt holes drilled through the centre of an imaginary 100mm circle, or 5x100: for VR6s, GTis and MK4s.

Center bore means what?

The center bore of an alloy wheel is the size of the hole at the back of the wheel which the hub fits into. To help the wheels to seat properly this hole needs to be an exact match to the size of the hub.

Most modern wheels are what's called hub-centric. This means that the hub which protrudes from your car, and mates with the equivalent sized hole at the back of your wheel, is load bearing. All that the studs or bolts do is holding the wheel onto the hub.

If you have lug-centric wheels, the state of your studs or bolts is obviously more important - be sure to replace these from time to time and always 3/4 tighten the wheels off the car to make sure they're centered.

Plus-Sizing and Up-Stepping means what?

Plus-Sizing or Up-Stepping are two terms given to the practice of rising the diameter of your wheels whilst at the same time reducing the profile of your tires to keep the overall rolling radius the same.

Benefits

Plus-Sizing will develop the handling of your car! Each step will decrease the proportion of flexible tire sidewall to rigid alloy. This will improve response, will help keep the tire tread square to the road and will improve your car's feedback. If done correctly speed and odometer accuracy will retain and the car look better.

Disadvantages

Often, tire inches are lighter than wheel inches. Plus-sizing can make your overall wheel/tire package heavier. Reducing the profile of your tires will also decrease your car's damping deflection under compression the ride quality will get worse. Other disadvantages can include the need for more expensive tires, your brakes looking undersized and people's grannies laughing and calling your car a buggy.

You got the Alloy Wheels and then what?

Before you do anything, ensure to see that you have the right sort of bolts - Bolts and studs have various diameters, threads and settings, your wheel supplier should be able to advice on this. Also check to see that you the 4 plastic spigot rings which help the interface between the wheel and the hub.

Next you need to jack your car up; do this in a secure way, and be sure to use axle stands, chock wheels still in contact with the ground and apply the parking brake. Offer a wheel up to the car and check that the bolt holes line up, that the wheel locates on the hub properly and that there is wheel arch, suspension strut and brake caliper clearance. If you have upgraded your brakes be SURE to seek advice and measure everything thoroughly before you order.

The wheel bolts or nuts must be tightened to the manufacturer's precise torque. Be sure to re-torque after a 100 miles or so as they will compress slightly; tighten them increasingly till they're 3/4 tight then lower the car and complete the process.

Take care of your Alloy Wheels

As anybody who's stepped into a motor factor in the last 10 years will tell you, there's a huge variety of specialist wheel cleaners on the market, all designed to help make the job of cleaning your new rims that little bit easier, unfortunately the real key to a great finish is hard work.

Before you fit your wheels, give them several coats of good quality car polish back and front. This will help prevent the road salt, brake dust and dirt keying to the surface on first use. Be sure to treat the surface of your alloys as well, if not better, than you would your paintwork. Remember, you have spent a small fortune of your alloys and they're going to be subject to the harshest conditions of just about any part of the car!

Frequent washing with mildly soapy warm water; and remember to hose all the loose abrasive grit off first. This is the best way to keep wheels clean. Do not use abrasive cleansers, electric buffers or wire wool pads on your wheels. Where it is possible let your wheels cool before cleaning them and keep away from car-wash wheel-cleaners at all times.

Huge amount of information about Alloy Wheels on this site - go check out.

All About Diamond Drilling Equipments

Diamond is the hardest naturally formed mineral found on earth. It is used not only for making expensive and beautiful jewelry but also for making drilling equipments. Since diamonds are very hard, they are ideal for making cutting and grinding equipments. Diamonds can be used to cut, drill, grind and polish. Thus it is greatly used in various industrial applications. Some of the common equipments used are the diamond tipped drill bit and the saw blades. Diamond powder is used as an abrasive in industries. The diamonds used for these purposes are of lesser quality and are called ‘bort’. Thus, there are two grades of diamonds - the gem grade diamond and the industrial grade diamond. The industrial grade diamonds should be hard and have heat conductivity.

The demand for diamonds is greater than the supply, so the diamond drill is very expensive. Although, there are a number of types of drills, the diamond drill is a very essential piece of equipment in an industry that needs to do a lot of drilling. The diamond drill is actually a drill with the diamond drill bit attached to the end of hollow drill rods. The diamonds used are fine to micro fine diamonds. To keep the sharpness and hardness of the diamond drill, it is necessary to give it sufficient lubrication and cooling. The holes made are very clean and giving the best results. The drilling has to be done slowly so that the life of the drill bits can be extended for a longer period of time. Drilling is a laborious process. It is also a tiring and demanding task and uses up a lot of physical energy. But, it needs to be done.

The diamonds drills can make holes in any type of substance, right from a soft one to a hard one. It includes bricks, metals, concrete and any other material without giving out much noise. The holes can be made quickly without any vibrations and much effort, since the drill is made of hard diamond. The diamond drilling equipments are long lasting and penetrate fast to drill a hole.

The diamond drilling equipments are used in all kinds of industrial applications. We are generally not aware of it many uses. They are used by the construction industry for making holes in bricks, concrete and iron. It is used in the mining industry to drill holes at places where there are mines. Wherever holes have to be made for placing cables, where anchoring bolts have to be placed and also where load carrying machines have to be installed, the diamond drilling equipments are used.

There are two types of drilling techniques. The dry drilling technique is used when concrete, hard surfaces, pavements, bricks or any hard surface has to be drilled. The wet drilling technique is used when the place that has to be drilled is fully under water.

The diamond drilling equipments are of different types. Synthetic diamonds are used in the impregnated bit’s matrix series. The matrix layer has the diamonds in a powdered metal bond. They have a long life and also penetrate fast. They are used in many forms of drilling. Surface set diamond bits have a single natural diamond layer. They have a hard matrix compound on the face of the bit. They are used while drilling soft to medium hard surfaces.

Diamond reaming shell has natural or synthetic diamonds. It is used to attach the drill bit to the core barrel. The main work of the reaming shell to make a hole that is exact in diameter for the core barrel to go through, having enough space for a new drill bit, when the old one has to be changed. Long diamond reaming shells are also available for drilling purposes.

Diamond core bits are thing walled core bits that are used in a large number of applications. They are used to drill holes in are concrete, glass, ceramics and also in all kinds of pipes used in electricity, drainage etc. Wet cut drill core bits and dry cut drill core bits are available for various purposes.

Synthetic diamond polycrystalline is also used in making drilling equipments. They are used in making drill bits, reaming shells, saw blades etc. Polycrystalline diamond pads or cutters (PDC) are placed in rows of polycrystalline diamonds kept on tungsten carbide substrate on the bit face, to drill holes in areas that are too sticky or soft. You have PDC core bits and PDC drill bits which are cost effective and very useful in drilling and cutting activities.

The diamond drilling equipments are no doubt expensive, but they are very effective in making clean holes that are necessary for all construction, mining and power, drainage, gas lines purposes. We should check out the various companies that manufacture these equipments, obtain details about the equipments and the price and then order the equipment that we need. The internet would be the best place to gather all the information.

About the Author

Tom Cruise is a Copywriter of Diamond core drilling company, Diamond core drills. He written many articles in various topics Core drilling equipment, Canadian drilling companies . For more information visit: http://www.diamondcoredrilling.com

How do I change out Rear drum brake on a 2000 Dodge Neon to make them disk brakes like the front.?

I have a 2000 Dodge Neon 2.0L I bought front/rear drilled and slotted rotors for. I am trying to change out the rear Drum brakes and replace it with an assembly to house calipers so I may use my matching Rotos on the back. I just got new rims and it looks very bad against the new rim.

this would be an expensive and time consuming conversion.
the brake lines, maybe master cylinder, and rear brake mounts would have to be changed, go to a junk yard and get all the parts off of a vehicle

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