Editing Adjusting hydraulic lifters (section)
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==Can I replace a damaged lifter with a new lifter?== ;{{Note1}} See [http://www.crankshaftcoalition.com/wiki/Lifters#Repairing_or_replacing_lifters Repairing or replacing lifters] [[File:Lifter expolded view.jpg|thumb|200px|left|Arrow points to check ball retainer on the end of the plunger]] [[File:Lifter clips 002.jpg|thumb|350px|Three styles of lifter cup retainers. The [http://www.truarc.com/pdfs/Truarc%20Catalog.pdf internal C-clip type] is stronger and should be used especially with solid lifters or when "zero lashing" lifters.]] When a lifter is noisy, often all that has happened is the check ball retainer assembly isn't fully seated into the recess on the bottom of the plunger, or a speck of dirt has lodged between the check ball and seat. This can be fixed, but requires the intake to come off to get to the lifter. Usually you can clean up the sludge inside the lifter using carb cleaner and it will perform fine again, but first check the surface of the lifter that faces the cam, if it's flat or concave just trash it, it must be sligthly convex. Shown left, is a disassembled GM hydraulic roller lifter. Most current flat tappet lifters have the same internal construction as this roller lifter, although there are different styles. But as long as the styles are the same, the piston from one can usually be fitted into another body. The arrow shows the location of the cup, spring and check ball assembly mentioned above.<br style="clear:both"/> Details are at the page linked to above. ===Chevy OEM hydraulic roller cam and lifters=== {{warning}}<blockquote>According to Crane's Director of Valvetrain Research and Development, Mark Campbell, valve lifts of more than 0.530 inch at the valve with a 1.5:1 rocker can allow the lifter to fall deep enough into the lifter bore (because of the lobe's small base circle) that the steel retainer can lose its grip on the lifter body. This allows the lifter to spin in the bore and destroy the camshaft.</blockquote> Crane sells a long travel lifter, [http://www.summitracing.com/parts/CRN-10535-16/ p/n 10535-16a] that will work for reduced base circle/high lift cams.
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