Hey all just got the magnum roller tip rockers on and i just cant seem to get them adjusted perfectly. Theres still some ticking coming from them and my engine is running a little rough. I went thru and adjusted them twice. Just wondering if theres something else i could do. Thanks
vrooooom
http://www.cardomain.com/ride/2090440
How did you adjust them? Sounds like a dumb question, but if you dont do it just right, things won't work right and it can take some work to get it perfect. I had to adjust mine about 3 different times in a week period before I got it to work.
"Silly cluth, glazing is for donuts!"
Courtesy of Crane Cams:
Adjusting Hydraulic Lifters for Proper Preload
In order to adjust the preload, the lifter must be properly located on the base circle or "Heel" of the lobe.
At this position the valve is closed and there is no lift taking place. You will need to watch the movement of the valves to determine which lifter is properly positioned for adjusting.
1. Remove the valve covers, and pick a cylinder that you are going to set the preload on.
2. Hand rotate the engine in its normal direction of rotation and watch the exhaust valve on that particular cylinder. When the exhaust valve begins to open, stop and adjust that cylinder's intake rocker arm. (Why? Because when the exhaust valve is just beginning to open, the intake lifter will be on the base circle of the lobe, the correct position for adjusting the intake.)
3. Back off the intake rocker arm adjuster and remove any tension from the pushrod. Wait a minute or two for that hydraulic lifter to return to a neutral position. The spring inside the lifter will move the pushrod seat up against the retaining lock if you give it time to do so. (If you are installing brand new lifters they will be in the neutral position when they come in the box.)
4. Now spin the intake pushrod with your fingers while tightening down the rocker arm. When you feel a slight resistance to the turning of the pushrod, you are at "Zero Lash". Turn the adjusting nut down one half to one full turn from that point. Lock the adjuster into position. The intake is now adjusted properly.
5. Continue to hand turn the engine, watching that same intake. It will go to full open and then begin to close. When it is almost closed, stop and adjust the exhaust rocker arm on that particular cylinder. (Again, when we see the intake almost closed, we are sure that exhaust lifter is on the base circle of the lobe.) Loosen the exhaust rocker arm and follow the same procedure described before in steps 3 and 4 to adjust this rocker arm.
6. Both valves on this cylinder are now adjusted, and you can move on to your next cylinder and follow the same procedure again.
JLP
90 Cav<--- "1LE" MPFI car
79 Monte<--- 11.82 @ 112.72
that's the correct procedure. have you checked your lifters for abnormal wear?
I was a retard, and now I'm permanently banned.
Another dumb question. Can I use this way to adjust my crane 1:6 rockers on my 2200?
Phlatcav wrote:Another dumb question. Can I use this way to adjust my crane 1:6 rockers on my 2200?
unless there is something i am missing about those rockers then absolutely
I was a retard, and now I'm permanently banned.
Phlatcav wrote:Another dumb question. Can I use this way to adjust my crane 1:6 rockers on my 2200?
yes, that is the proper procedure to set the lash on any typical hydraulic lifter setup.
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** Flat Broke Racing Inc.**
In my experience those rockers tend to be noisy. I've installed or adjusted them in other engines. I don't spin the pushrod though. I rock the rocker arm gently back and forth at the pushrod side as I tighten the nut. As you get closer to zero preload, you'll usually feel the play between the rocker and pushrod get smaller and smaller. Make sure your adjusting socket doesn't contact the rocker pivot to prevent false readings.
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