What's the trick to install valve stem keepers?

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21 Apr 2023 13:40 #883542 by ckahleer
Sometimes they woun't go in, so I compress the springs a little more and they drop in too deep. Some times one goes in place, but I have trouble getting the other one in, compress the spring a little more and the first one falls out of place. Where should the keeper notch be in relation to the top of the valve spring cap? Any suggestions to getting the keepers in place less fustrating?

94 KE100
81 CM200t
82 KZ305
85 VF1100c

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21 Apr 2023 14:04 - 21 Apr 2023 14:08 #883543 by Injected
I don't think there are any short cuts to fixing your issues except gaining experience thru doing the job.

My spring compressor is home made so I am able to rock it back n forth, that lets me put one at a time on the valve stem. Then slowly unscrew the compressor while rocking so they both "catch" at the same time. Make sure to have a magnet on hand if one only catches.

Having some stands for the head makes it much easier to work on.

Its just trial and error to gain experience, no other tricks as far as I know, you just have to do it a few heads to get the knack of it. 




 
  • Last edit: 21 Apr 2023 14:08 by Injected. Reason: sp

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    • Scirocco
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    • Never change a running system
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    21 Apr 2023 14:41 - 21 Apr 2023 14:41 #883548 by Scirocco
    I have seen on youtube shorts that someone using a plastic bag to install the valve keepers.
    Couldn´t find the video but this guy use the same trick.
    With the right pre-pressure the keepers slide into the final position.
    If i find the detailed video, i will add it here.

    Last edit: 21 Apr 2023 14:41 by Scirocco.

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    21 Apr 2023 17:13 #883553 by Wookie58
    The following user(s) said Thank You: linuxrob, Dragbike_Mike

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    21 Apr 2023 21:04 - 21 Apr 2023 21:17 #883563 by ckahleer
    The plastic bag trick worked great on the intake valve. First attempt, 1 minuite. The exhaust valve, not so good. I think because I didn't have straight line pry point under the frame. After close to an hour of trying, I finaly got it.
    I needed to get in there to replace the left valve seals. The bike smoked badly from the left exhaust since rebuilding the top end over the winter. Sure enough, I damaged the new intake seal during the rebuild. KZ305.

    94 KE100
    81 CM200t
    82 KZ305
    85 VF1100c
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    Last edit: 21 Apr 2023 21:17 by ckahleer. Reason: add photos

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    • Dragbike_Mike
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    22 Apr 2023 04:54 #883569 by Dragbike_Mike
    Replied by Dragbike_Mike on topic What's the trick to install valve stem keepers?

    I have used a spot of grease to hold the keepers in place 
    That is my method, also  ^^^^^^^^^^^^

    Presently - 1980 KZ1000B4 LTD w/mild ported head, Megacycle cams, 1015cc Wiseco, Falicon Supercrank, R&D undercut trans
    In a former life - KZ-based dragbike - CrMo car tire chassis, 1395cc, Hahn Racecraft turbo system, VP C16, Orient Express 3-spd auto, 7.80's @ 165-170.
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    22 Apr 2023 08:39 #883575 by ckahleer

    I have used a spot of grease to hold the keepers in place 
    So you are not trying to compress the springs a minimal amount and slide the keepers in? I assume you are compressing the springs to a point whrere a greased keeper can just be placed in the proper position on the valve stem? 
    BTW I do have a proper valve spring compressor. I just didn't want to remove the head again. Compressing cotton rope against the valves worked well, they didn't move a bit.

    94 KE100
    81 CM200t
    82 KZ305
    85 VF1100c

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    23 Apr 2023 18:43 #883660 by linuxrob
    This is my compressor and meathod. Just compress enough
     

    1980 Z500 B2 owned from new 78260 miles
    1980 Z500 B2 in bits since 1982 23000 miles
    2004 GSF1200S Bandit K4
    2000 GS125 ESD
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    • Dragbike_Mike
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    24 Apr 2023 05:42 #883668 by Dragbike_Mike
    Replied by Dragbike_Mike on topic What's the trick to install valve stem keepers?
    One other tip - after you get the keepers installed, take a brass punch and small hammer and give each valve tip a light rap.  This will ensure that the keepers are fully seated.  

    Mike

    Presently - 1980 KZ1000B4 LTD w/mild ported head, Megacycle cams, 1015cc Wiseco, Falicon Supercrank, R&D undercut trans
    In a former life - KZ-based dragbike - CrMo car tire chassis, 1395cc, Hahn Racecraft turbo system, VP C16, Orient Express 3-spd auto, 7.80's @ 165-170.
    The following user(s) said Thank You: Wookie58

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    24 Apr 2023 05:45 #883669 by Wookie58

    One other tip - after you get the keepers installed, take a brass punch and small hammer and give each valve tip a light rap.  This will ensure that the keepers are fully seated.  

    Mike
    Thanks Mike, I forgot to mention that. If they are going to fly off better it happens before the motor is running 

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