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Christopher.Albers(at)bubbs.biola.edu wrote,
>GDWF22A(at)prodigy.com,Internet writes:
>>Wear on lifter sidewalls is
>>virtually nonexistent and tolerences are loose anyhow, even if there
was
>>some wear on the sides. The flood of oil around this region and also
>>the
>>splash action which lubes them really prevents lifter wear on the
sides.
>If this be the case, then is it critical that I replace removed lifters
>to their original position after rebuilding? Based on what you've said
>it seems that I only need to make sure that tolerances are fairly
>uniform across the board. Are my assumptions correct?
It is important, but not for the reasons above.
The bottoms of the pushrods "break in" to the surfaces
inside the lifter.
In time, a really smooth surface develops, along with some
nipples that are the result of wear around the pushrod, but
no wear on the oil bleed hole in the bottom of the lifter.
it is important to keep the lifter. pushrod, rocker set matched,
cause if you dont, you are gonna break the new surfaces in
togther again, and have to adjust the valves several times
till it all breaks in again.
ALSO,
There was a posting about not buying new lifter, and reconditioning
the old ones.
I have never ever seen a Rootes engine that did not have pitted
lifters when I pulled it apart.
The case hardening appears to be very thin, and chips away.
Reconditioning would have to include grinding the concave
profile on the lifter face.
If you do recondition a lifter you would have to have the lifter
re-hardened "cost prohibitive" in order to use it.
Maybe these spiffy Isky lifters are much better, but if thats the
case, Ive never come across one.
Jarrid Gross
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