Jarrid Gross (Yorba Linda, CA) wrote:
>
> No comment here, I tried to get some parts hardened a while back,
> and considered hardening some of the new, but broken in lifters
> I removed from the motor.
>
> The cost was $150 for 8 rockers and 5 lifters.
>
> >one I use is called Casinet from Brownells catalog.
>
> If this stuff really works, it sounds like it could be really usefull.
>
> BTW, I didnt know you could harden cast iron.
>
$.02....
cast iron can be case hardened.
some of the pitting we may be seeing may NOT be pitting. if you have
stuff that looks like gouges and rips, i'd be concerned. what i have
observed on the lifters that i have pulled out of a few 1725's is
the porosity found in cast iron. being in the metal fifnishing business,
i am constanly amazed at how often porosity and grain shows up, even in
the highest quality tool steels, and how nasty it can look!!! cast iron
is incredibly grainy and very porous stuff!! it is nearly impossible to
put a lusterous finish on, due to all of the pits and pores in it.
case hardening, like would be done to a lifter face, can minimize the
apperance of grain and porosity, but the material may also rearrange, due
to unknown properties, into a more pourous appearing form.
the best way to get pores to minimize is through flat lapping on paper,
like 600+ grit, on top of something really flat, like a granite surface
plate. a good piece of granite, or marble tile would probably do the
trick in a pinch.
joe K
'68 SV 395018175 OD LRO
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