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Old 08-17-2011, 12:39 PM   #1
wmf62
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Default ZZ4 valve adjustment

what is the spec/procedure for adjusting the ZZ4 hydraulic roller lifters?
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Old 08-17-2011, 12:50 PM   #2
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I'd do it hot and running with a cutout valve cover to shield the mess. You know the drill, back off until it clatters, back in until it doesn't and go in another half to three quarter turn.

At least that's how I would do it.
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Old 08-17-2011, 02:27 PM   #3
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thanks...

according to this post in the H.A.M.B; maybe, or maybe not

http://www.jalopyjournal.com/forum/s...d.php?t=583627

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Old 08-17-2011, 03:03 PM   #4
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I did a search and found about a zillion different opinions.

Why are you having to adjust? Did you miss a shift?
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Old 08-17-2011, 04:07 PM   #5
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Quote:
Originally Posted by claysmoker View Post
I did a search and found about a zillion different opinions.

Why are you having to adjust? Did you miss a shift?
lol... i found a zillion myself...

i just figured that hydraulics are supposed to be quiet, therefore they need to be adjusted..
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Old 08-17-2011, 05:41 PM   #6
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Maybe just pull the covers and take half a turn on all the nuts. That will fix it!
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Old 08-17-2011, 05:56 PM   #7
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maybe...

i guess you and i are the only ZZ4 'experts' on here.
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Old 08-17-2011, 06:15 PM   #8
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No need for an "expert"........... adjust like any other hydraulic lifter SBC.

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Old 08-17-2011, 10:09 PM   #9
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Quote:
Originally Posted by Plasticman View Post
No need for an "expert"........... adjust like any other hydraulic lifter SBC.

Plasticman
More fun getting everyone's opinion.
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Old 08-17-2011, 11:28 PM   #10
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Quote:
Originally Posted by Plasticman View Post
No need for an "expert"........... adjust like any other hydraulic lifter SBC.

Plasticman
maybe, maybe not...
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Old 08-17-2011, 11:39 PM   #11
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Same roller lifters and rockers used on the 86-91 L98s and 92-96 LT1s. Probably get many people chiming in if you post in the C4 section.

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Old 08-17-2011, 11:45 PM   #12
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Originally Posted by ZBRA View Post
Same roller lifters and rockers used on the 86-91 L98s and 92-96 LT1s. Probably get many people chiming in if you post in the C4 section.

thanks... probably, i just don't want to get too many forums going; hard enough to keep up with this one...

there seems to be many 'opinions' as to how many turns and whether they are just 'noisy' no matter how they are adjusted...

i figured with all the ZZ4s that people have stuffed in their C1/C2 that someone(s) would have the 'facts'.
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Old 08-17-2011, 11:45 PM
 
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