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post #1 of (permalink) Old 05-03-2000, 01:56 AM
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valve adjustment

Alright here we go again!!
I replaced my heads on my 302 today, only problem is that the motor is an 82 with none adjustable rockers and the heads I put on are 1966 or 1967 vintage and have adjustable rockers. I have no idea how to adjust the rockers and need a place to get this info. If anyone knows were I can find this info or has some advice to pass on I would be very happy to hear from you.
Thanks, Mudd

[img]/wwwthreads_images/icons/wink.gif[/img]If it's stuck, force it! If it break's,it needed replacing anyway!!!
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post #2 of (permalink) Old 05-03-2000, 10:30 AM
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Re: valve adjustment

Here's a old timers method. Snug them all down until they make contact with the top of the valve and just start to compress the lifter. Start the engine with the valve cover off. Do one side at a time and expect a little mess. Back off the rocker nut until the rocker starts to chatter (you'll notice it starts to get loose.). Then start to snug it back up until it stops clattering. Just at that point stop and back the nut off 1/4 turn. Like I said that is a ruff adustment. It has worked for me. A manual should give you the method for doing it with feeler guages warm and cold to get it exact. But if you just want it usable... If the adjustment is too loose you will just get a little rocker arm clatter and a little less lift of the valve, but if it is too tight the extra pressure of the lifter on the cam will wear your lobes down.

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post #3 of (permalink) Old 05-03-2000, 02:35 PM
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Re: valve adjustment

As Michael said above. It is better to have them loose than tight. If they are too tight and metal expands as the engine gets hot, the valves won't fully close and dissapate the heat to the head. This causes burned valves, cam lobe wear, and other problems. Good luck.

If it ain't broke, I can probably still fix it.
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post #4 of (permalink) Old 05-03-2000, 02:41 PM
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Re: valve adjustment

This is the same method I have used in the past on chevy small blocks but I wasn't sure if it was the same on For's. Thanks guys. Once again you guys have help a lot. Mudd

[img]/wwwthreads_images/icons/wink.gif[/img]If it's stuck, force it! If it break's,it needed replacing anyway!!!
post #5 of (permalink) Old 05-03-2000, 03:40 PM
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Re: valve adjustment

Don't you mean to torque it down another 1/4 to 1/2 turn after the clattering stops? The recommended torque for a rocker nut is 23-25 ft-lbs. It's a good place to start, and it will get you into the ballpark for a final adjustment.

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