valve adjustment
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valve adjustment

  1. #1
    Senior Member steele211's Avatar
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    Default valve adjustment

    can someone please help me with this? When I adjust the valves with the zero lash plus 1/2 turn method that everyone mentions i lose compression. i know the lifters are hyd. is there something i dont understand? please help

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    I'm famous ! Lucky's Avatar
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    which method are you using - Pattern where your rotate and adjust different valves in sequence ?

    for start up i find it most conveinet to roll my engine over till one of the two valves is all the way open ( or down ) , I then adjust the oposite valve to zero + 1/4 - Then after cam breakin i run em again !
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    Senior Member steele211's Avatar
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    I ahve used two methods. bring it up on 1 and adjust 1/2 then bring it up on 6 and adjust the other half and i have done it the way you are talking about. this thing i really starting to piss me off

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    I'm famous ! Lucky's Avatar
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    so your doing a compression test afer each valve adjustment ?
    " my carbon footprint is gonna kick your green ass"


    Quote Originally Posted by 396_Ways_To_Spit View Post
    WOWO!!!!! THat has to be the most beautiful crank that Ive ever seen!!!!!!!!!!!!!!!!


    Quote Originally Posted by MAXIMUS View Post
    He has been allowing me to park my equipment in his backyard for a few years now...
    [/SIGPIC]

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    Some guy obnoxious001's Avatar
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    Quote Originally Posted by steele211 View Post
    can someone please help me with this? When I adjust the valves with the zero lash plus 1/2 turn method that everyone mentions i lose compression. i know the lifters are hyd. is there something i dont understand? please help
    Besides making sure the cam is in the correct location when you adjust the valve, with hydraulics you have to be very careful to make sure you determine "zero" lash. When they are new and not full of oil yet, they are usually very easy to compress, but even ones that have been run might require a soft touch to adjust properly.

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    Quote Originally Posted by obnoxious001 View Post
    Besides making sure the cam is in the correct location when you adjust the valve, with hydraulics you have to be very careful to make sure you determine "zero" lash. When they are new and not full of oil yet, they are usually very easy to compress, but even ones that have been run might require a soft touch to adjust properly.
    I'll bet u have solid lifters!!!!!

  9. #7
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    Quote Originally Posted by obnoxious001 View Post
    Besides making sure the cam is in the correct location when you adjust the valve, with hydraulics you have to be very careful to make sure you determine "zero" lash. When they are new and not full of oil yet, they are usually very easy to compress, but even ones that have been run might require a soft touch to adjust properly.
    Barry's 100% on this- seen alot of guys adjust hyd' by spinning the pushrod, thinking that it will stop spinning when zero lash is achieved,
    but this is WAY WRONG! on new lifters especially. you can usually still
    spin the pushrod quite easily past half travel of the plunger! I wiggle it
    up and down like a lot of things

  10. #8
    Senior Member SoldHondaBoughtHondo's Avatar
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    Quote Originally Posted by Lucky View Post
    so your doing a compression test afer each valve adjustment ?
    That sounds like what is happening.....if you tighten a lifter past where it it was pumped up to, it might take a while for it to bleed down...
    When in doubt, adjust the idle down as far as it will go and still run and fire it up...back it out until it clatters, turn it in slowly until the clatter stops, and slowly add another qtr/half turn.
    You will hear the motor slow down until that lifter bleeds down, and when it's done, the motor will smooth back out.

    If it doesn't smooth out, it probably has solids...
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    Senior Member steele211's Avatar
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    solid lifters are just that? these would be the strangest looking solid lifters i have ever seen. no im not doing a compression test after each one i dont need to i can feel the loss of com pression as im rolling the motor over by hand or hear it when i roll it over with the starter. its like the valves dont close all the way

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    this is probably way far out there, but, is it possible that you have the wrong size pushrods?, or, the pushrods are in the wrong hole? ie: int in exh, exh in int...just sayin'

    FastRat

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    Senior Member SoldHondaBoughtHondo's Avatar
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    Quote Originally Posted by steele211 View Post
    solid lifters are just that? these would be the strangest looking solid lifters i have ever seen. no im not doing a compression test after each one i dont need to i can feel the loss of com pression as im rolling the motor over by hand or hear it when i roll it over with the starter. its like the valves dont close all the way
    If there is a loss of compression then it is likely the valves are to tight...and either you have completely compressed the lifter or because they are not bleeding down because of cold/thick oil...

    And i am curious, what does a loss of compression feel like when you turn the motor over by hand?

    And you might want to be careful..over tightening the valves on some motors will bend valves or pushrods
    "A liberal paradise would be a place where everybody has
    guaranteed employment, free comprehensive healthcare, free
    education, free food, free housing, free clothing, free
    utilities, and only law enforcement has guns. And believe it or
    not, such a place does, indeed, exist: It's called prison."

    Sheriff Joe Arpaio
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    Senior Member steele211's Avatar
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    it is considerably easier to turn over because the cylinder is never completely sealed to build compression. am i way off in my thinking here? if i am please advise just want to be on the lake like everyone else

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    Senior Member steele211's Avatar
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    there is a difference in pushrod length but what came out went back in. it was running fine before i pulled the heads. now it will idle ok but it starts to stutter and miss about 3200. everything else is the same no carb changes, no dist. changes. not sure what the hell just really confused

  16. #14
    Frst Round Runnerup Hondog's Avatar
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    Steele, it does sound as though they are too tight. I would try the method Sold Honda suggested. It is a little messy but it should eliminate the possibility of too tight.

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