| from edelbrock's web site Any gasket can create a seal, but a good gasket can do it with less clamping force, and for a longer period of time. Edelbrock's gaskets are not only manufactured from extremely high quality materials, but theyre also designed specifically to fit our intakes and cylinder heads, so theres no chance that our gaskets will interfere with the operation of either component. These gaskets also work with most stock cylinder heads and intakes, aluminum or cast-iron, as well as other aftermarket components. Top quality Edelbrock gaskets ensure a perfect seal every time. | |
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| COMPLETE HEAD GASKET SETS Get the gaskets you need in one package! These complete sets include every gasket you need to install cylinder heads - head, intake, exhaust, valve cover, distributor, and thermostat housing gaskets. |  |
| CYLINDER HEAD GASKETS These Head Gaskets feature a tough, scuff-resistant silicone rubber coating that provides excellent sealing and conformability. They don't require the engine to be warmed up in order to seal, and if the engine needs to be disassembled, they release without sticking. The silicone coating reduces fluid migration through the gasket, and leaks, if they occur, are easy to detect on the white material. |  |
| INTAKE GASKETS Matched to Edelbrock Performer and Performer RPM cylinder heads and manifolds, our Intake Gaskets allow for optimum flow and performance. The new MP-2N Micropore® technology does not use solvents making our gaskets environmentally friendly. Impervious to most chemicals, this synthetic fiber composite provides a high recovery under load. This means that when compressed, the gasket will conform to any imperfections on the sealing surface even using lower flange pressures. A nitrile bead around each port opening makes the seal even better. |  |
| EXHAUST GASKETS Edelbrock Exhaust Gaskets are made of EnCore™ HTX-900; a high-density non-asbestos fiber/metal core composite material consisting of two graphite coated, heat resistant fiber blended sheets that are mechanically and chemically fused to an expanded steel core. The finished product provides high heat resistance, excellent load retention and unmatched sealing performance on exhaust manifold and header applications. A 50% recovery rate allows for gasket expansion in the event your header loses the proper header bolt torque. |  |
| VALVE COVER GASKETS Fabricated from performance CRC (core-reinforced-composite), Edelbrock Valve Cover Gaskets provide excellent sealing integrity and conformability for easy installation. The multi-layer construction has two highly compressible, high rubber content, fiber-reinforced outside layers which are chemically bonded to a high strength composite core. This unique core-reinforced construction has a radial strength to resist high-vacuum or blow-out conditions. |  |
Showing posts with label head gasket set. Show all posts
Showing posts with label head gasket set. Show all posts
Thursday, August 14, 2008
Edelbrock
Monday, July 14, 2008
Fel-Pro Head Gasket
Head gasket
From Wikipedia, the free encyclopedia
A replacement head gasket sitting loosely on top of a four cylinder engine block. Once positioned correctly the cylinder head will be bolted down on top of it.
A head gasket is a gasket that sits between the engine block and cylinder head in an internal combustion engine. Its purpose is to seal the cylinders to ensure maximum compression and avoid leakage of coolant or engine oil into the cylinders; as such, it is the most critical sealing application in any engine, and as part of the combustion chamber, it shares the same strength requirements as other combustion chamber components.[1]
Contents
1 Head gasket types
2 Gasket problems
3 References
4 External links
//
Head gasket types
MLS - stands for "Multiple Layers Steel,". Most modern head engines are produced with MLS gaskets. These typically consist of three layers of steel.
The contact faces are usually coated with a rubber-like coating such as Viton that adheres to the cylinder block and cylinder head respectively whilst the thicker center layer is bare.
Solid copper - A solid sheet of copper, and typically requires special machining called 'o-ringing' that places a piece of wire around the circumference of the cylinder to bite into the copper. When this is performed copper gaskets are extremely durable. Recently companies have started producing copper gaskets with integral sealing wires permitting their retrofit into engines without the removal of the engine block for machine work.
Composite -- an older technology. Typically these are made from asbestos or graphite but are more prone to blowouts than newer gaskets. Asbestos gaskets are becoming increasingly rare due to health concerns.[2]
Elastomeric - a gasket type used by Rover on their K Series engines. It utilised a steel core plate with molded in place silicon rubber beads to seal oil and coolant passages. The bores were sealed by rolled steel fire rings in a more conventional manner. The idea behind the gasket design was to produce a production version of the technology used in F1 engines at the time. The original application of the gasket on the smaller versions of the K Series was very successful. However, an engine redesign resulted in persistent problems with the design - the joint interface became unstable and the gasket could not cope.
Gasket problems
Occasionally, the compression in the cylinder will cause a leak to form in the gasket and the gasket will have to be replaced, or severe damage can take place (a "blown" head gasket). This problem has been exacerbated by the use of aluminum rather than iron cylinder heads; while lighter than iron, aluminum has a much greater thermal expansion rate, which in turn causes a great deal more stress to be placed on the head gasket. Engine makers have responded to this by adding a non-stick coating such as Teflon to the surface of the head gasket.
If the gasket fails, a variety of problems can occur, from compression loss (leading to power reduction, or a rough engine), to exhaust gases being forced into the cooling system, leading to the engine overheating and increased engine wear due to the motor oil being mixed with antifreeze. Coolant can leak into the cylinders, causing the exhaust to issue steam[3] and the catalytic converter to be damaged. If a very large amount of coolant does this, hydrolock can occur, causing extensive engine damage. Sometimes, all that may happen when a head gasket is blown causing excessive steam erupting from the tailpipe and the engine may act and drive like normal.
A damaged head gasket can cause compression to leak between cylinders.
Head gasket condition can be investigated by checking the compression pressure with a pressure gauge, or better, a leak-down test, and/or noting any indication of combustion gasses in the cooling system on a water-cooled engine. Oil mixed with coolant and excessive coolant loss with no apparent cause, or presence of carbon monoxide or hydrocarbon gases in the expansion tank of the cooling system can also be signs of head gasket problems.
Driving with a blown head gasket (if possible) can cause additional extensive damage due to overheating or loss of lubrication.
Blue exhaust smoke may be indicative of oil-burning.
References
^ Bickford, John H. (1997). Gaskets and Gasketed Joints. CRC Press, p. 57. ISBN 0-824-798-775.
^ Nunney, M. J. (1998). Light & Heavy Vehicle Technology. Elsevier, p. 23. ISBN 0-750-638-273. “Since exposure to asbestos is now recognized as being a health hazard [...] the manufacture of non-asbestos cylinder head gaskets has now become established.”
^ Nunney, p. 23.
External links
Ask's Head Gaskets and Valve Covers Q&A
Retrieved from "http://en.wikipedia.org/wiki/Head_gasket"
Categories: Engine technology
All text is available under the terms of the GNU Free Documentation License. (See Copyrights for details.)
From Wikipedia, the free encyclopedia
A replacement head gasket sitting loosely on top of a four cylinder engine block. Once positioned correctly the cylinder head will be bolted down on top of it.
A head gasket is a gasket that sits between the engine block and cylinder head in an internal combustion engine. Its purpose is to seal the cylinders to ensure maximum compression and avoid leakage of coolant or engine oil into the cylinders; as such, it is the most critical sealing application in any engine, and as part of the combustion chamber, it shares the same strength requirements as other combustion chamber components.[1]
Contents
1 Head gasket types
2 Gasket problems
3 References
4 External links
//
Head gasket types
MLS - stands for "Multiple Layers Steel,". Most modern head engines are produced with MLS gaskets. These typically consist of three layers of steel.
The contact faces are usually coated with a rubber-like coating such as Viton that adheres to the cylinder block and cylinder head respectively whilst the thicker center layer is bare.
Solid copper - A solid sheet of copper, and typically requires special machining called 'o-ringing' that places a piece of wire around the circumference of the cylinder to bite into the copper. When this is performed copper gaskets are extremely durable. Recently companies have started producing copper gaskets with integral sealing wires permitting their retrofit into engines without the removal of the engine block for machine work.
Composite -- an older technology. Typically these are made from asbestos or graphite but are more prone to blowouts than newer gaskets. Asbestos gaskets are becoming increasingly rare due to health concerns.[2]
Elastomeric - a gasket type used by Rover on their K Series engines. It utilised a steel core plate with molded in place silicon rubber beads to seal oil and coolant passages. The bores were sealed by rolled steel fire rings in a more conventional manner. The idea behind the gasket design was to produce a production version of the technology used in F1 engines at the time. The original application of the gasket on the smaller versions of the K Series was very successful. However, an engine redesign resulted in persistent problems with the design - the joint interface became unstable and the gasket could not cope.
Gasket problems
Occasionally, the compression in the cylinder will cause a leak to form in the gasket and the gasket will have to be replaced, or severe damage can take place (a "blown" head gasket). This problem has been exacerbated by the use of aluminum rather than iron cylinder heads; while lighter than iron, aluminum has a much greater thermal expansion rate, which in turn causes a great deal more stress to be placed on the head gasket. Engine makers have responded to this by adding a non-stick coating such as Teflon to the surface of the head gasket.
If the gasket fails, a variety of problems can occur, from compression loss (leading to power reduction, or a rough engine), to exhaust gases being forced into the cooling system, leading to the engine overheating and increased engine wear due to the motor oil being mixed with antifreeze. Coolant can leak into the cylinders, causing the exhaust to issue steam[3] and the catalytic converter to be damaged. If a very large amount of coolant does this, hydrolock can occur, causing extensive engine damage. Sometimes, all that may happen when a head gasket is blown causing excessive steam erupting from the tailpipe and the engine may act and drive like normal.
A damaged head gasket can cause compression to leak between cylinders.
Head gasket condition can be investigated by checking the compression pressure with a pressure gauge, or better, a leak-down test, and/or noting any indication of combustion gasses in the cooling system on a water-cooled engine. Oil mixed with coolant and excessive coolant loss with no apparent cause, or presence of carbon monoxide or hydrocarbon gases in the expansion tank of the cooling system can also be signs of head gasket problems.
Driving with a blown head gasket (if possible) can cause additional extensive damage due to overheating or loss of lubrication.
Blue exhaust smoke may be indicative of oil-burning.
References
^ Bickford, John H. (1997). Gaskets and Gasketed Joints. CRC Press, p. 57. ISBN 0-824-798-775.
^ Nunney, M. J. (1998). Light & Heavy Vehicle Technology. Elsevier, p. 23. ISBN 0-750-638-273. “Since exposure to asbestos is now recognized as being a health hazard [...] the manufacture of non-asbestos cylinder head gaskets has now become established.”
^ Nunney, p. 23.
External links
Ask's Head Gaskets and Valve Covers Q&A
Retrieved from "http://en.wikipedia.org/wiki/Head_gasket"
Categories: Engine technology
All text is available under the terms of the GNU Free Documentation License. (See Copyrights for details.)
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