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Original Message
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| RE: HYD. Lifter's and ADJ rocker's |
| By McQ - 05/31/2003 12:22:46 PM; IP 65.176.105.106 |
Yes you use the regular ball/cup push rod that goes with the adjustable rocker arm.
Actually there's no lash figure. All you have to do with hydraulics lifters/adj. rockers is take up the slack and give the rocker adjuster one half additonal turn. Here's how I've done it:
With one hand rotate-turn the push rod as you tighten the rocker adjusting screw. Make sure the push rod is captured in the rocker of course. As the slack is taken up you keep rotating the push rod to make sure it's not tight but that all slack is out, that there's no visual space/gap between the p-rod cup and the rocker adjusting screw. You should feel reasonable drag in the push rod as you turn it but it shouldn't be tight. Again the slack is taken up. Now all you do is give your ratchet and additional high 12:00 to 12:30 turn or one half turn. That should do it.
What you don't want to do is overtighten the adjusting screw. If after starting the FE you notice a lifter or two clicking that's no problem. Note which one or two are clicking and pull the v-cover back off and give those noisy ones a little bit more turn. Although I've rarely had new hydraulics click with adjustable rockers.
Many years ago when I was even dumber than I am now I over tightened a set of rockers/hydraulics on a 390. It started but popped/back fired....shut it down! Hmmm oh ya this ain't no small block! A run though on the adjustables using the described technique and the 390 fired and idled like it should...albeit a little rough due the fairly radical cam I was running on that particular 390.
It's easy, you'll like em. Adjustables rockers with hydrualics is a good idea. They're required when running anti pump-up and offer a little more lift with standard hydrualics. |
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