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Push rods and rocker arms
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autonurse
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Aug 26, 2013, 8:36 AM
Post #1 of 7
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Push rods and rocker arms
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 I have a valvetrain question. when I know each vehicle is different and i always go by the repair manual. if replacing hydraulic valve lifters I read in an auto fundmentals text book that you should adjust or set the preload which stated turn pushrods with fingers and tighten rocker arm nut until you are unable to turn push rod with fingers then go another 1/4-full turn after that depending on vehicle?? I have worked on a chev cavalier and an oldsmoblile cutlass and the Haynes manual states on both to just tighten the rocker arm nuts to a certain torque such as 22 or 18 ft Ibs can I assume that these vehicles have solid lifters?? thanks
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Hammer Time
Ultimate Carjunky
/ Moderator
Aug 26, 2013, 8:47 AM
Post #2 of 7
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Re: Push rods and rocker arms
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No, you can't assume that. They are hydraulic and non adjustable.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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autonurse
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Aug 27, 2013, 1:34 PM
Post #3 of 7
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Re: Push rods and rocker arms
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Thank you I am doing alot of reading and learning and thanks for your help. so there are hydraulic lifters that are non adjustible? and what is the advantage of an adjustable one vs non ? thanks again for your time> 
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Hammer Time
Ultimate Carjunky
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Aug 27, 2013, 1:41 PM
Post #4 of 7
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Re: Push rods and rocker arms
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No advantage, just a different design.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Aug 27, 2013, 1:46 PM
Post #5 of 7
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Re: Push rods and rocker arms
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Any adjustment or pre-set for hydraulic is going to be engine by engine not one procedure that fits all. Solid would be the same, engine by engine design,
T
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autonurse
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Aug 28, 2013, 4:35 AM
Post #6 of 7
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Re: Push rods and rocker arms
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thanks
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autonurse
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Aug 28, 2013, 4:35 AM
Post #7 of 7
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Re: Push rods and rocker arms
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 thanks
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