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Old 10-07-2002, 02:26 PM
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Question NEED HELP WITH 454

HEY CAN ANYONE HELP ME MY LIFTERS ARE RATTILING AND I WANTED TO KNOW HOW MUCH TORQUE SHOULD THE ROCKER ARMS BE SET AT?

[ October 07, 2002: Message edited by: CARLO67 ]</p>

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Old 10-07-2002, 02:55 PM
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Solid lifters or hydraulic? There's a big difference in how you set them and without more info I don't think anyone can help.


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Old 10-07-2002, 02:56 PM
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THEY ARE HYDROLIC
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Old 10-07-2002, 03:18 PM
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Begin by positioning the piston in cylinder #1 (drivers side front) on top dead center of the firing stroke. (Turn the crank while watching the valves and when the intake valve closes then continue to turn the crank till it comes up to TDC and make sure you are turning it in the same direction it normally rotates.) You can now adjust #1 cylinder's valves (intake and exhaust). You can also adjust cylinders #2, #5 and #7 intake valves and #3, #4 and #8 exhaust valves at this time. Tighten the rocker adjusting nut till the push rod feels firm (wont jiggle up and down) but you can still rotate it. Then give the adjusting nut one more full turn and you're done.

Next turn the crank clockwise one full turn until the mark is on TDC again. Now you can adjust the intake valves in cylinders #3, #4, #6 and #8. You can also adjust the exhaust valves of cylinders #2, #5, #6, and #7. Adjust them the same way, push rod is firm but will still turn and then go one more turn on the rocker adjusting nut. You're now done.

Good luck.

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[ October 07, 2002: Message edited by: Centerline ]</p>
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Old 10-07-2002, 04:48 PM
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Do everything above but, if you want an easy way and not have to remember any "sequence" on what rockers to do each time the crank is turned. Start out like he said (make sure your #1 is not at overlap), adjust the rockers on #1, then turn the crank 1/4 turn in nomal direction and go to #8 and do the same. All you do is follow the firing order while turning the crank 1/4 turn at a time. You don't have to be "precise" when turning, "eyeballing" a 1/4 turn is fine. This works on all motors, to figure out how much to turn the crank, take the number of cylinders and divide by two. Figure it like a fraction example: 6 cylinders divided by two equals 3 or "/3" add a one to it and you get "1/3" or one third of a turn each time.
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Old 10-08-2002, 04:08 AM
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Yep, that'll work too.

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Old 10-08-2002, 04:57 AM
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[quote]Originally posted by BstMech:
<strong>Do everything above but, if you want an easy way and not have to remember any "sequence" on what rockers to do each time the crank is turned. Start out like he said (make sure your #1 is not at overlap), adjust the rockers on #1, then turn the crank 1/4 turn in nomal direction and go to #8 and do the same. All you do is follow the firing order while turning the crank 1/4 turn at a time. You don't have to be "precise" when turning, "eyeballing" a 1/4 turn is fine. This works on all motors, to figure out how much to turn the crank, take the number of cylinders and divide by two. Figure it like a fraction example: 6 cylinders divided by two equals 3 or "/3" add a one to it and you get "1/3" or one third of a turn each time. </strong><hr></blockquote>


I have heard that this is a more accurate way than the previous listed. I have never put any thought into whether there is a difference, just always did it this way. Any thoughts....

Oh ya, on the original post you said torque. Just wanted to make sure you dont try to get a torque reading when setting these. if you tighten them enough to bottom the lifters and run the engine, damage will almost certainly occur. The cam will usually lose a lobe or several. I know some guys who have done this.

Chris

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Old 10-08-2002, 06:44 AM
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No torque wrench needed!
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