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Old 10-13-2002, 05:49 PM
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Post LIFTERS?

MY LIFTERS WERE RATTILING SO I TIGHTEN THEM DOWN JUST UNTILL THE ROD DOSENT SPIN ANYMORE AND NOW WHEN I STAT HER UP IT SOUNDS AS IF MY FIRING ORDER IS NOT CORRECT COULD OVER TIGHTEN THE LIFTERS COULD THAT CAUSE THE BOGGING AND BACK FIRING THREW THE CARB?

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Old 10-13-2002, 06:05 PM
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YES

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Old 10-13-2002, 06:09 PM
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It sounds to me like you have overtightened the rocker arm nuts. If you are doing this by feel, make sure you are on the heel of the cam when you adjust your lifter pre-load.
I usually put number one cylinder on top dead cylinder first{I assume you are working on a Small block Chevy}.
Make sure it's on the compression, and not the exhaust stroke. Now that you have #1 on TDC on compression stroke, adjust #1 intake and exhaust valves. Loosen the rocker arm nuts until the rocker is loose, then begin to tighten. While you are tightening, spin the pushrod in your fingers, when you ahieve zero lash, you will feel very slight tension on the pushrod. Once you reach this point, turn another 1/2 turn-this will put your lifter pre-load right where it should be.
Now, since your engine fires every 90 degrees, turn your balancer 90 degrees, and adjust the next cylinder in the firing order, continue to turn your balancer every 90 degrees for each consecutive cylinder 1-8-4-3-6-5-7-2.
There are other methods to set hydraulic pre-load, but this is what I use most. Some special camshafts might need a different method, but this should work for you.
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Old 10-13-2002, 07:07 PM
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You can also adjust the lifter with the engine running. You can buy some oil clips that go over the rocker arms. With the engine running use a 5/8" socket and back off untill the lifter starts to tap. Then tighten it down until the lifter stops tapping, and turn 3/4 of a turn more. <img src="graemlins/pimp.gif" border="0" alt="[pimp]" />
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