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speedracing944 speedracing944 is offline
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Join Date: Sep 2003
Location: Evansville, Wisconsin
Posts: 3,349
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What constitutes a BAD hydraulic tappet (lifter) ????

Which group of lifters are bad?

All lifters measure 0.420" from the button to the top.

Group 1)

lifter is soft. I can push the button in with my thumb with using about 5 lbs of force.

If I pump up the lifter with oil it stiffens (real hard to push) up but as I push it with my thumb I am able to get oil to seep out of the hole and run down the lifter.

If the lifter sits on the bench after 2 minutes the oil leaks out of the hole and i am again able to push the button with my thumb using about 5 lbs of force


Group 2)

If I try to push on the button very hard with my thumb (about 50 lbs of force) I can get the button to depress just a little amount (1/5 the distance) and a little oil leaks out of the hole. Maybe 1/10 the amount of oil.

The lifter can sit on the bench for eternity and it doesn't go soft. It maintains a very stiff nature.


So which lifters are bad?
I need confirmation ASAP
Thanks in advance



Speedy
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Old 06-11-2007, 05:20 PM
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