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Old 12-26-2003, 08:51 AM   #1
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What lifters are these?

I've just finished ripping apart a '90 5.0 Ford motor and the lifters that came in the motor are not roller lifters like I thought they were going to be, instead...they are flat on the bottom...I've looked through the Ford Racing books, (they are Ford Racing lifters)...and I found lifters that look identical to them, but they are listed as "Anti-Pump Up Lifters"...but the lifters I have do have a "springy" effect when I push them in which leads me to believe that they might not be "Anti-Pump"....the reason I'm asking is because I'm looking to sell these lifters because I have converted to roller lifters, but I don't know what the hell these things are called to go about selling them...

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Old 12-26-2003, 10:28 AM   #2
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In Modern cars all lifters are hydraulic. In the 60's and early 70's there were some cars with mechanical lifters but not many. Solid lifters required constant valve adjustments and were very noisy. Hydraulic lifters self adjust when properly set. Now saying that if the engine was not stock someone could have installed solid lifters and cam. Anti-pump up lifters is most likely a marketing name given to a specific lifter that prevents Anti-pump up or Float that is common with hydraulic lifters at very high RPM's
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Old 12-26-2003, 01:34 PM   #3
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Back when I was a teenager the hot rodders called them "solid lifters", and yes, they were always adjusting their valves. I didn't want any part of them. I had a Crower cam with what they called 8K plus high rev hydraulic lifters, might have been something on the order of the lifters you are talking about here.
Rick Kilpatrick, AAS Automotive Systems Tech, Alamance Community College, Class of 99. 06 5 speed manual Mustang with Pony pkg : GT Mac Mufflers, true duals with one custom pipe. 2.5" system. GT bumper cover, all installed March 7&8 2006. AFE Stage 1 CAI, Motoblue Underdrive pulley, GT aluminum shifter knob, honeycomb rear blackout panel,and dash kit installed. Roush hood scoop and side window louvers installed. SS taillight trim has been installed, new alum. GT steering wheel installed.
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Old 12-27-2003, 01:15 AM   #4
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And those of you want a different exhaust tone. Hydraulic lifters have a mellow tone at idle to you lay on it. And mechanical are loud all the time.
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