Setting lifter on a "new" motor.
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Drifting
Joined: Mar 2001
Posts: 1,896
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Setting lifter on a "new" motor.
When I finally do start my motor the lifters won't be filled w/ oil. How would I set the valve lash? Turn the motor over until the lifter that I am doing is at full lift, set the rocker on and tighten it until the push rod "snugs" up and then 1/4 more turn? or is it totaly different?
[Modified by Aaron-74, 2:52 PM 3/23/2002]
[Modified by Aaron-74, 2:52 PM 3/23/2002]
Burning Brakes
Joined: Aug 2000
Posts: 852
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From: Katy TX
Re: Setting lifter on a "new" motor. (Aaron-74)
Get an old distributor and rig it so you can use a drill to pump oil before starting the motor. Look for oil coming out of each push rod to make sure you have fully oiled the system. Also monitor the oil pressure guage to insure that you have good pressure in the system.
Safety Car
Joined: Jun 2001
Posts: 4,004
Likes: 2
From: Severna Park Md
Re: Setting lifter on a "new" motor. (Aaron-74)
Totally different...do you have hydraulic lifters? Either way you set the lash for solid lifters, or the preload for hydraulic lifters when the lifter is all the way closed and on the base circle of the cam lobe.
Safety Car
Joined: Jun 2001
Posts: 4,004
Likes: 2
From: Severna Park Md
Re: Setting lifter on a "new" motor. (Aaron-74)
First off all you can mark your harmonuc balancer at every 90 degrees using the TDC mark as the starting point. Some people use timing tape cause its already marked at TDC, 90, 180, and 270 degrees. Next, turn the engine to #1 cyl TDC and adjust both lifters for them. Then turn the crank clock wise 90 degrees and do cyl # 8 continue turning crank 90 degrees and then do cyl# 4....follow the firing order straight on through... 18436572. With this method you will only need to turn the crank two complete reveloutuins clockwise to complete the process.
Another way is to adjust the lifter of a given cyl when the oppisite lifter for that cyl is all the way up. With the oppisite lifter all the way up...the one being adjusted is always on the base circle of the cam. This method will usually take more revolutions of crank to finish the job.
Be carefull with finding zero lash. Its not uncommon to mke them too tight by watching closley. Rotate the pushrod between fingers as you tighten the rocker nut. The momment you feel resistince in the rotation you have found zero lash. For hydraulic lifters tighten it 3/4 turn down from zero lash
[Modified by Jvette73, 3:14 PM 3/23/2002]
Another way is to adjust the lifter of a given cyl when the oppisite lifter for that cyl is all the way up. With the oppisite lifter all the way up...the one being adjusted is always on the base circle of the cam. This method will usually take more revolutions of crank to finish the job.
Be carefull with finding zero lash. Its not uncommon to mke them too tight by watching closley. Rotate the pushrod between fingers as you tighten the rocker nut. The momment you feel resistince in the rotation you have found zero lash. For hydraulic lifters tighten it 3/4 turn down from zero lash
[Modified by Jvette73, 3:14 PM 3/23/2002]
