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Old 05-19-2018, 06:47 PM   #1
ryanss22
 
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New to rollor rocker setup ?

I just had a rollor rocker setup (uses stock pedistals) put in my pull truck (12v cummins) stock ratio.. my question is how do you go about checking valve lash (where to check with feeler gauges) and at what specs are they supposed to be with this setup? Thank you ahead of time for any help
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Old 05-19-2018, 07:35 PM   #2
jasonc

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Under the roller and top of the valve like a stock valve adjustment. I bet 20/10 would work just fine.
 
Old 05-23-2018, 11:57 PM   #3
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I suggest “side to side” and not “with” the roller. Going “with” the roller may give you a feel that it is looser than it feels.
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Old 05-24-2018, 12:20 PM   #4
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I slide the feelers gauge in from the side of the roller.
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Old 05-24-2018, 12:47 PM   #5
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Okay, thanks guys. Should I stick with the .10 and. 20? It's a big billet cam. Or a lil looser say .12 and .22?
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Old 05-29-2018, 07:44 AM   #6
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Defiantly not looser. Sounds like you should talk to your cam manufacturer or whoever did your cylinder head.
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Old 05-29-2018, 08:18 AM   #7
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I ran mine a little tighter, as I knew I had plenty of piston to valve clearance. I was looking for a little more cam.
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