Wierd noise
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Cruiser
Joined: Aug 2008
Posts: 183
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From: indiana
Wierd noise
have 82 sportster am getting a scraping tapping noise in front head or camcase checked compression well within specs. pushrod adjustment still ok what could this be need help to figure it out
Seasoned HDF Member
Joined: Dec 2004
Posts: 11,068
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From: Texas! Ya mean there's someplace else?
Yep, shimming to the low end of the tolerance is the usual method. Just check everything and make sure the rocker arm ends and the pushrod ends haven't been eating each other, and that the bushing-to-arm fit is within spec.
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Cruiser
Joined: Aug 2008
Posts: 183
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From: indiana
hey pococj i pulled the rockers and they had about a .001 shake at the pushrod side book says they should be .0005-.0025 so i guess they need new bushings i even pulled the cam cover and the lifters and lifter blocks all is good there i didnt pull the heads but looked at springs none are broke you think i should pull them and check them also? cant get new rocker arms obsolete but can get new bushings will have to take them and have them done as i dont have tools to do it myself will let you know what happens
thanks alot ride hard die free
thanks alot ride hard die free
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Cruiser
Joined: Aug 2008
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From: indiana
hey pococj i just noticed that the rocker arm at the valve side is hittin the valve collar seen wear spot below the stem pad was shiny an seen same on valve collar now what does that mean something wrong in head or on rockers all of it stock so what should i do i know i dont want that hittin it will snap the rocker eventually hhheellppp!
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Stellar HDF Member
Joined: Feb 2006
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From: Houston Texas
If the recommended clearance is .0005 (a ˝ thousandth) minimum to .0025 (2˝ thousandths) maximum, then you say yours measures .001 clear. This is dead center (within a ˝ thousandth) between the minimum and the maximum.
NOTE: I believe you misread the standard for minimum. Look at it again and see if it does not say .001 (stated as one thousandth) to .0025 (stated as 2˝ thousandths) loose. The figure .005 is almost zero clearance, so I believe you misread something.
Result....? I cannot understand how you think you need new bushings.
Your clearance of .001 is still within the limits, and on the low side at that. If the bushings gave .003 or higher, only then, the bushings need to be replaced..............pg
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Cruiser
Joined: Aug 2008
Posts: 183
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From: indiana
weird noise
ok it says in shop manual .0005{five ten thousands-.0025-twenty five ten thousands}also on 82 sportster it has a spring and shim witch is used to hold rocker against the pushrod side of rocker book also says they are not shimable but if what u say is true then what is makin noise took it all apart last night pulled lifters all is solid checked the cams for side play all good there when i said they shake the rockers holdin in your hand an grabbin either end of shaft they shake {thats with shaft in rocker} not side to side like slidin it into or out of- but like out of round or sloppy fit but if u say its ok what else could it bepiston slap or something in lower end noise is only in front cylinder onlyand can her it all through it from cams to rockers
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