Pontiac 10241743 Valve,Intake

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Because of the extent of its procedure and the miscellaneous instruments and machineries that are essential for it, performing some valve operations that include servicing of the valves, as well as the valve seats, and guides is better implemented by a professional known as a valve job. It is in this way that a home mechanic can remove and disassemble each head, clean and inspect them before reassembling them to be forwarded to the dealer service department or an automotive machine shop for the true valve servicing. The dealer service department or automotive machine shop will have to take out the valves and springs, to recondition or replace the valves and valve seats, they will also have to recondition the valve guides then examine and replace the valve springs, spring retainers or rotators and keepers as required, replace the valve seals with new ones, replace or reinstall the valves and guarantee correct installed spring height. Also, any surface of the cylinder head gasket will be machined where warped. As far as head is concerned once the valve job is done by a professional it will be as good as new can be. These surfaces need another cleaning after its return also to ensure that there are no more tiny metal particles and abrasive grit.Also there would be additional cleaning to this head before using it on the engine so as to get rid of all these particles that were removed during the valve service or head resurfacing. Oil, oil mist galleries or oil paths can be blown through with compressed air; installed spring height is to be checked if correct.

Because of the need to perform extensive work on the valves, valve seats and valve guides, often referred to as the 'valve job', it is advisable to seek the services of a professional technician since the job calls for proper alignment and use of some specific tools and equipment. A home mechanic can take off the head, scrape, clean as well as assess the valves, then reinstall the head and bring or take the head to a dealer service department or an automotive machine shop for the real servicing of the valves. Some of the duties of the dealer service department or the automotive machine shop will include the removal of the valves and the springs, the reconditioning and or replacement of the valves and valve seats, the inspection, reconditioning, and replacement of the valve guides, the checking and replacement of the valve springs, the spring retainers, the keepers as may be deemed necessary, the replacement of the valve seals with new ones and the reassembly of If the surface of the cylinder head gasket is twisted then it is also refinished. After the valve job is accomplished by the professional the head will be in good condition as if it was when it was new. On its return it should be again washed to remove all the particles of metal and other abrasive materials which could be left following the valve service or the process of milling or facing of the head and if possible all the oil holes and passages should be blown with air.

When servicing valves, valve seats and valve guides- popularly termed as valve jobs- due to the delicate nature of the task and its specific tools and equipment, it is best when done by professional people. If doing a home mechanic work, the heads can be taken apart and reassembled, initially cleaned and inspected and then delivered to a dealer service department or an automotive machine shop for actual valve servicing. The valves and springs will be removed by either a dealer service department or an automotive machine shop who will also either recondition or replace the valves and valve seats. The valve guides will also be reconditioned; there would be checking of spring height during assembly on reassembly of the cylinder head, replacing of spring retainers or rotators replacing keepers as required, putting in new valve seals, putting together the rest of the valve parts and checking whether installed spring height is correct. In addition to that, if necking is needed on its warped surface, it may also need surfacing at this time. A professional should perform this step because in case anything goes wrong with his hands it should be his responsibility as opposed to an ameuter who will blame it on fate or bad luck. When the professional is through with doing a valve job, you'll have your head back almost new. Afterward rinse off all traces of metal particles produced from the grinding action during machining operations as well sand bar grit from contact with any grinding wheel feeds using carbide cutters which must have been used in refacing the face of combustion chambers which had gotten dirty by carbon deposits.

The valve mechanism of the 231 cu in V6 engine is peculiar because it does not have a valve lash adjustment provision like most GM engines. If the valve seat on the cylinder head or the valve face is ground it alter the height of the valve stem from the surface of head. GM says that if valve and seat have been refinished to such an extent that the end of the valve stem will be 0.050 inch higher than in its normal position, the required correction must be made by grinding off the stem end to bring valve stem back to standard height. First, take off the cylinder head and put it aside on a clean flat surface which will be referred to as surface A. Using a good spring compressor like; GM tool J-8062 compress the valve spring to remove the valve spring cap key, and after that ease of the tool to pull out the spring and cap off. Take out and dispose the valve seals stacking the valves in order in a block of wood or a hard cardboard for replacement. Wash and inspect the cylinder head for signs of damage, it is also important that one checks on the valves for pitting, the burnt marks as well as seating; the valves shall be re-condition or replaced, if a valve after re-grinding has sharp edge, it should be chucked away. The increment in the valve lift, as observed on the stick at the valve stem end, causes the clearance in the guide if excessive; to rectify this will require the installation of an oversized valve and should be done at the dealer or machine shop. Because the valve seats should be trued up to 45° in the refining stage, valve lapping should not be done. Coat the stems and guides with engine oil prior to reinstalling the valves, and replace intake valve seals, but do not use new exhaust valve guide seals. Go over the valve stem slowly and let the flattened part of the valve seal come to rest atop the valve stem, then use some installation tool such as the GM tool J-22509 to slide the valve seal over the valve guide in a way that the upper inside surface of the said valve seal reaches the top of the valve guide. Squeeze the springs only to assemble keepers since tightening the valve's seal can be affected when the springs are compressed tightly. Lastly re-attach the intake and exhaust valve springs as they can be placed in upside down manner then re-attach the valve spring, cap, and cap retainer and finally the cylinder head.

When servicing valves, valve seats and valve guides- popularly termed as valve jobs- due to the delicate nature of the task and its specific tools and equipment, it is best when done by professional people. If doing a home mechanic work, the heads can be taken apart and reassembled, initially cleaned and inspected and then delivered to a dealer service department or an automotive machine shop for actual valve servicing. The valves and springs will be removed by either a dealer service department or an automotive machine shop who will also either recondition or replace the valves and valve seats. The valve guides will also be reconditioned; there would be checking of spring height during assembly on reassembly of the cylinder head, replacing of spring retainers or rotators replacing keepers as required, putting in new valve seals, putting together the rest of the valve parts and checking whether installed spring height is correct. In addition to that, if necking is needed on its warped surface, it may also need surfacing at this time. A professional should perform this step because in case anything goes wrong with his hands it should be his responsibility as opposed to an ameuter who will blame it on fate or bad luck. When the professional is through with doing a valve job, you'll have your head back almost new. Afterward rinse off all traces of metal particles produced from the grinding action during machining operations as well sand bar grit from contact with any grinding wheel feeds using carbide cutters which must have been used in refacing the face of combustion chambers which had gotten dirty by carbon deposits.

Because of the need to perform extensive work on the valves, valve seats and valve guides, often referred to as the 'valve job', it is advisable to seek the services of a professional technician since the job calls for proper alignment and use of some specific tools and equipment. A home mechanic can take off the head, scrape, clean as well as assess the valves, then reinstall the head and bring or take the head to a dealer service department or an automotive machine shop for the real servicing of the valves. Some of the duties of the dealer service department or the automotive machine shop will include the removal of the valves and the springs, the reconditioning and or replacement of the valves and valve seats, the inspection, reconditioning, and replacement of the valve guides, the checking and replacement of the valve springs, the spring retainers, the keepers as may be deemed necessary, the replacement of the valve seals with new ones and the reassembly of If the surface of the cylinder head gasket is twisted then it is also refinished. After the valve job is accomplished by the professional the head will be in good condition as if it was when it was new. On its return it should be again washed to remove all the particles of metal and other abrasive materials which could be left following the valve service or the process of milling or facing of the head and if possible all the oil holes and passages should be blown with air.

Because of the need to perform extensive work on the valves, valve seats and valve guides, often referred to as the 'valve job', it is advisable to seek the services of a professional technician since the job calls for proper alignment and use of some specific tools and equipment. A home mechanic can take off the head, scrape, clean as well as assess the valves, then reinstall the head and bring or take the head to a dealer service department or an automotive machine shop for the real servicing of the valves. Some of the duties of the dealer service department or the automotive machine shop will include the removal of the valves and the springs, the reconditioning and or replacement of the valves and valve seats, the inspection, reconditioning, and replacement of the valve guides, the checking and replacement of the valve springs, the spring retainers, the keepers as may be deemed necessary, the replacement of the valve seals with new ones and the reassembly of If the surface of the cylinder head gasket is twisted then it is also refinished. After the valve job is accomplished by the professional the head will be in good condition as if it was when it was new. On its return it should be again washed to remove all the particles of metal and other abrasive materials which could be left following the valve service or the process of milling or facing of the head and if possible all the oil holes and passages should be blown with air.

Because of the need to perform extensive work on the valves, valve seats and valve guides, often referred to as the 'valve job', it is advisable to seek the services of a professional technician since the job calls for proper alignment and use of some specific tools and equipment. A home mechanic can take off the head, scrape, clean as well as assess the valves, then reinstall the head and bring or take the head to a dealer service department or an automotive machine shop for the real servicing of the valves. Some of the duties of the dealer service department or the automotive machine shop will include the removal of the valves and the springs, the reconditioning and or replacement of the valves and valve seats, the inspection, reconditioning, and replacement of the valve guides, the checking and replacement of the valve springs, the spring retainers, the keepers as may be deemed necessary, the replacement of the valve seals with new ones and the reassembly of If the surface of the cylinder head gasket is twisted then it is also refinished. After the valve job is accomplished by the professional the head will be in good condition as if it was when it was new. On its return it should be again washed to remove all the particles of metal and other abrasive materials which could be left following the valve service or the process of milling or facing of the head and if possible all the oil holes and passages should be blown with air.

If possible, use an air line to blow out the valves, valve guides, and valve ports.