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Carbide Tire Grinding
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 4" Carbide Tire Grinding Disc Wheel Circle Track IMCA  US $36.99
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 New Speedway 7" Carbide Tire Grinding Disc, 5-8"-11 US $44.99
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 New Speedway 4" Carbide Tire Grinding Disc, 5-8"-11 US $34.99
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SRP 7" Carbide Tire Grinding Wheel -71349 Sale Price: $49.95  |
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SRP 7 Carbide Tire Grinding Wheel -71349 Carbide Tire Grinding Wheels are to make tires come in faster, or to refresh used tires. Has a 5/8 -11 threaded center Works great for IMCA G60 tiresSerious injury can result from use of these discs. Never use discs on a tire that is not inflated and fastened to an axle or stand. When in use these discs can cut off limbs in a matter of seconds! |
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SRP 5" Carbide Tire Grinding Wheel -41349 Sale Price: $33.95 |
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SRP 5 Carbide Tire Grinding Wheel -41349 Nail Head Grinding Wheels are to make tires come in faster, or to refresh used tires. Has a 5/8 -11 threaded centerSerious injury can result from use of these discs. Never use discs on a tire that is not inflated and fastened to an axle or stand. When in use these discs can cut off limbs in a matter of seconds! |
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Porting and Polishing Chevy Muscle Car Heads
The heart of your engine is the cylinder heads. A time-honored method for increasing Chevy muscle car horsepower and torque has been improving the air flow potential of the engine cylinder heads. There are many ways to do this; expensive "bolt-ons" such as aftermarket heads, supercharging or turbo charging. For the real gear-head with little money and basic mechanical skills, porting and polishing the OEM heads is always an option.
With just a few key modifications, most heads can be made to flow 5 to 10% better than stock and the effort only requires a few basic tools, patience and a weekend's worth of sweat labor. That's free horsepower! If you are doing a valve job anyway, especially if upgrading to larger valves, this improvement could be in the 20 to 25% range.
The Basic Steps Are:
1. Remove ridges from the intake and exhaust port bowls; this is formed when the valve seats are cut and once the heads are disassembled you can easily feel it with your finger; it's in the head just below the seat. Blend the ridge into the port walls using a carbide burr with a ¼ inch die grinder. A variable speed grinder and a light touch are best. Be very careful that the shank of the burr does not come in contact with the valve seat. Remove as little material as possible.
The entire port should feature a continuous smooth radius. The valve guide bosses can also be cleaned up but be sure to leave .125 of material surrounding the valve guide hole. You can use abrasive rolls to polish the exhaust ports but do not polish the intake ports. With the intakes, too smooth and you lose the turbulence needed to thoroughly mix the gas and air being pulled into the combustion chamber.
2. Unshroud the valves by gently removing material from the sides of the combustion chambers. Match the head gasket with the bolt and dowel-pin holes in the head and then scribe a cylinder-bore line around the chambers. Using machinist bluing or a dark felt tip marker will make the scribe line easy to see. You then know how far you can safely grind but do not go outside the scribe line or serious sealing problems may result. Again, remove minimal material to avoid reducing the compression ratio. Use some old valves in the chamber to protect the seats while grinding. You can also polish the chambers with abrasive rolls; it will reduce the tendency for carbon buildup.
3. Port match the intake runners to the intake using the intake gasket as a template for a scribe line. Some say this is worth 4% more CFM, 2% is more likely, but every little bit helps. Do not polish the intake runners or fuel puddling and loss of flow turbulence could result - leave them a little rough.
Tools Needed:
o Variable speed die grinder with 25,000 rpm potential; an air grinder is ok but an electric with variable speed control seems easier to modulate
o Carbide burrs; 1/2 inch head and some smaller sizes for tight spots all with 2 inch long shanks
o Abrasive rolls (basically medium to fine grits, try to stay below 1/2 inch diameter)
o Leather gloves
o Ear plugs
o Eye protection
o Dust mask
o Duct tape (wrap the grinder tightening nut and tape around the combustion chamber scribe line just in case); running a burr across an unprotected head surface will ruin your whole day - the duct tape offers a little extra protection.
Key Learning: A valve job will be needed after this process because I have never seen anyone port and polish heads without nicking at least a few of the valve seats, no matter how careful they were - so plan accordingly.
Your chevy muscle car can really benefit from this "sweat labor" modification. Do this right and you can feel the added power and torque in the seat of your pants - improves gas mileage too! For additional information and photos click on this link: Chevy Power.
by Tom McGuire
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
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