ok,
decompressed from weekend but still not unloaded nor seperated the truck and
trailer.
if you are comfortable with plastigauge , micrometers and feeler gauges and
are versed in their uses then by all means reuse what is not out of
tolerance. but, if these measuring devices are out of reach or out of
comprehension, then by all means do not look at something and guess it looks
all right and reuse a component. the false economy term comes to mind when
anyone tries to reuse timing chains and gears and oil pumps. remember that
not only do timing chains stretch but as they wear, the timing gears wear to
that specific chain. used gears that appear to be good with a new chain
may yeild to that chain in a matter of hours of running time and end up with
unwanted timing deviations that will leave you scratching your head for
days! same goes for the "i just rebuilt my motor and my oil pressure is
not what i thought it should be" with a used pump. a pump may be in
specified tolerance. but new the tolerance was even closer! so if you
have a rather tight tolerance motor a used pump may not be a very good
choice and cause you to be doing another motor in the near future. most
commercial rebuilders will without fail install a new pump as insurance.
also be aware that you can assemble a very tight motor requiring extensive
break in just like poppa used to do....or a rather loose motor that will be
screaming in a few hours of it's first start. it's al lin the machining of
the crank and block and reaming of the guides. evry motor presents a fresh
slate as to why it needed to be rebulit. burned piston(and in wich hole),
spun bearing(rod or block and wich position), dropped valve or burned valve,
and the list goes on and on. each motor contains the same bits but each
one experiences difrent failures or worn out components. so, each job has
to be analised independantly as to what to do next . but caution must be
exercised in making decisions concerning using old parts and their
condition. all too many times owners attemptt o save a few dollars and that
led to an early failure and eternal condemnation of an entire line of
vehicles (owner's never wanting to accept the blame so it must be the crappy
car manufacturer's fault for making that darn junk car or their machinist?).
so when you are into a project for hundreds and hundreds of dollars and 1
more hundred could finish it and the choice is to hurry along and reuse the
last part that really should have been replaced and something goes
wrong......go to the bathroom look deeply into the mirror point a finger
atthe guy who is staring back at you and chew out that idiot untill you are
blue in the face! .....then call ed or peter c. and start over again.
and yes even professionals make mistakes. i've yelled at that jerk in my
mirror a few times*glad he can not yell back*.
chuck.
remember used components establish wear patterns with what ever they contact
(cam/lifters, chain and gears) and must be reassembled with their respective
worn components in order to insure their compatability. so be carefull out
there in disassembly land!.................c. :)
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