Great Falls tribune., 1922-03-12
Barney 0ldfldd says:
KEEPING THE ENGINE QUIET


~obyAAAbI AS&Zs " mig ToAkuIc StIVACc
There is a very close relation be
tween engine quietness and wear, fo1
the longer the engine runs without
making noise the less the wear. II
should be the duty of the car owner
to maintain engine quietness not alone
because of the pleasantness it brings
but because the very things that bring
about the quietness also help to
lenngthen the life of the engine. The
whole subject may be summed up in
two w0rds-lubrication and adjust
ment. In these days Of bad fuel and
frequent use Of the choke, attention
to fabrication is vitally necessary.
The best thing every car owner can
do from the very first day he operates
his car is to flush the crankcase at
frequent intervals. It may be hard to
see how this will effect quietness, but
IT should be remembered that all in
ternal noises are reduced as proper
oil film is provided between the parts.
This oil film cannot be maintained un-
less the oil is clean and free from
gasoline and water If you use oil for
too long period and | insist that
LOCO miles is too long-you induce
walls-not to say anything of the cam
shaft. bearings, timing gears, etc.
When these parts become worn they
degenerate into noise producers.
Fresh Oil Pays Dividends
It pays big dividends to spend few
dollars once each month on fresh oil
and the time taken to remove the oil
pan and have it well cleaned. You
cannot be sure the crankshaft is clean
unless the oil pan is dropped. With
fresh oil inside you then can be certain
that you are doing all possible to
avert early piston slaps, caused by
worn rings, worn cylinders. worn
wrist pins, etc. There are no adjust
ments you can make inside of the en-
gine. therefore, all you can do is to
see that those parts are always sup.
piled with clean oil. At this time Of
the year you should begin to change to
summer grade.
But there are parts Of the engine
that produce noise even if well lubri-
Gated and the noise increases at very
fast rate if adjustment of parts is not
taken care of quickly. Take the most
frequent producer Of noise--the valve
tappet A slight clincking is permis-
sible even when the engine is hot, but
when valve push rods begin to knock
due to side play, when overhead-valve
rocker arms being to knock due to
worn bearings, then is the time the
owner objects.
In most engines the valve gear is
oiled automatically, or. if not. provision
is made for constant fabrication by
means of oil cups. The valve tappet
or rocker arm clearances should be
maintained as near as possible through
the life of the engine. The greater
the clearance above normal the greater
will be the wear, because the moving
tappet acting through greater dis
tance pounds harder against the valve
stem or rod. The ideal arrangement
is to have only the slightest clearance
when the engine is at normal heat and
an oil film should take up that clear
ance So as to cushion the blow
Watch Rocker Arm
Tappet adjustment on L-head engines |
is easy to make. 1t consists in loos- I,
ening one nut, moving another and |
then locking the adjustment with the !
first nut moved. In one make Of car
there is no adjustment so that new !
parts have to be put in when wear oc- !
ours. In most overhead valve engines !
there is simple adjustment at the |
rocker arm end.
The rocker arms must be watched |
for side play and this develops rapidly |
when the rocker arm bearings are not
constantly oiled In some engines they
are oiled automatically under pressure,
in some. oil cups are provided and in