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Adjustion Rolller rockers, and clearence

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Old 06-14-2008 | 04:38 PM
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Default Adjustion Rolller rockers, and clearence

What would be a good starting piont for my 1.7 Ratio roller rockers on my 454? And what is the proper way to adjust them? The motors are C&G 454, 461ci big blocks, they have factory GM HP heads, comp cam roller lifter, comp molly push rods, and Harland sharp 1.7 ratio roller rockers, Thanks for any help!!!
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Old 06-14-2008 | 05:00 PM
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Hydraulic rollers? If so, 1/4 turn past zero. Warm.
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Old 06-16-2008 | 11:00 PM
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Thanks Chris, I was looking for a step by step instructions on how to adjust my rockers?? Is there any out there ?
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Old 06-17-2008 | 06:50 AM
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Originally Posted by Apache Brave
Thanks Chris, I was looking for a step by step instructions on how to adjust my rockers?? Is there any out there ?
Do a search. This has been covered hundreds of times.
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Old 06-17-2008 | 09:05 AM
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You can do it two ways. One is warm and running with the valve covers off- it's messy. The other is by feel. Run #1 to TDC on the compression stroke. Run the rocker down until it's at zero clearance, then turn 1/4 turn. Then rotate the crank 90 degrees and do #8. Keep turning 90 and follow the firing order.

Hydraulics are nowhere near as critical as solids.
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Old 06-17-2008 | 10:21 AM
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Go to Crane cams website they have a very easy directions on how to do this. I followed it step by step it worked perfectly.
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Old 06-17-2008 | 12:03 PM
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Top Dead...
Ex- 1,3,4,8
Int-1,2,5,7
Go 180
Ex 2,5,6,7
Int-3,4,6,8
I Always Go 3/4 Turn ...
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Old 06-17-2008 | 03:08 PM
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Originally Posted by 1BIGJIM
Do a search. This has been covered hundreds of times.
That is my point every one has his/her own way of doing it.

When I was taught (decades ago) it was done with the valve covers off and oil flying every where.
Ah don't worry it will burn off the exhaust. Maybe that was back in the days your driveway was gravel and not concrete.
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Old 06-18-2008 | 07:14 AM
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Well I would not suggest doing it with the engines running, unless you like working in a oil mess and your boat looking like you just got it from sanford and son! If you cam is not real radical you can bring each cyl up to tdc with both valves closed back each off till you get soom lash. then tighten rocker nut 1/4 to a 1/2 turn. You can feel for lash by spinning the pushrod till you feel some drag on it. Then stop and go your 1/4 to 1/2 turn.
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Old 06-18-2008 | 09:40 AM
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Originally Posted by Budz Motorsports
Well I would not suggest doing it with the engines running, unless you like working in a oil mess and your boat looking like you just got it from sanford and son! If you cam is not real radical you can bring each cyl up to tdc with both valves closed back each off till you get soom lash. then tighten rocker nut 1/4 to a 1/2 turn. You can feel for lash by spinning the pushrod till you feel some drag on it. Then stop and go your 1/4 to 1/2 turn.
Yes I would never attempt doing it with the engine running.

I do it exactly like you stated. I always do one head at a time, then move over to the next so I am not going back and forth.
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