The Brookings register. [volume] (Brookings, Brookings County, S.D.) 1903-1971, 1915-09-16

Could install an eight cylinder mo
tor in my chassis7
Willie the factor OF safety Of tn
chassis Is no doubt large enough t
take care Of the installation Of an eigh
cylinder motor, 1t would be inpractica
to attempt II on account Of the difficult
ties In connecting up the clutch, etc
Considerable machine work wou!d b,
necessary, and the expense would be 81
great that II would not be justified.
What is the cause Of gasoline running
out of tbs bottom Of my oarbureto'
just as soon as the motor stops?
The probable cause Of the gasoline
running out Is that the heavy fuel
which Is In the manifold condenses aft.
er the car has stopped running and will
run back into the carburetor and drip
out. BY putting n full hot air attach
ment on the motor so that all the air is
heated by passing through a muG sur
rounding the exhaust manifold the
dripping will probably be stopped. 1t
In uoL u loub GouDiCp Ci, uiii
II your motor runs well the change
would not do other than perhaps give
you a slightly greater fuel economy.
10 there any method by which one can
tell what horsepower 10 being used
while a car 10 movingf
There is no way, Of telling the power
OF the engine unless you know It's
horsepower at various r. p. N. A
tachometer may be fitted so as to be
read from the drivers seat, and then
If you know the horsepower at 1000
T. p. m, 800 r. p. M, ETC.. you a tell
approximately its horsepower at other
speeds. Many race drivers $ tachom-
etsrs instead Of spesdometers for regis
tertng speed.
Under ordinary conditions, how many
miles should q car run before the
valves need grindinsi After running
my oar 1000 miles Il does not have quite
% much power on high - ~ Il did
whom new, and the compression 10 bet
tsr In some cylinders than othsrs.
A new motor. after having been In
. but one month, may require its
valves to be ground. and, on the other
hand. 1t may not need valve grinding
for two or perhaps three months. In
old cars the valves usually need grind
ing every two or three thousand miles.
but some owners take particular pains
and grind the valves the moment the
compression loss is slight. A new car
will need valve grinding In a short
time because It Is customary to feed
excess of oil to such a motor. This
cause carbon to accumulate rapidly,
and the carbon making its way to the
valve face and seat thus requires them
to be ground. After the car has been
in service the valve grinding periods
are not at all frequent
Where unequal compression exists
the valves should be ground, provided.
of course, they are properly adjusted
when the compression test Is made. IL
the motor Is an old one the loss Of
compression may be due to leaks about
the cylinders or to loose pistons, but
In your car, which has run only 1900
miles. such conditions hardly would
exist. 1t Is safe to assume, therefore.
that the valves need grinding.
The disk clutch on my car slips or
let's 90 entirely on a hard pull after il
gets warmed up. Can you explain this2
Failure Of the plates TO grip one an
other Is caused usually by a weak
spring, worn plates or improper lu-
bricant. When the plates are worn you
can get relief by adding one or more
plates. but there Is no necessity for
doubling the number. Just add enough
plates to take up the loss due to wear
on the other plates. 1t Is best to alter
nate steel and bronze, for the wear Is
less when dissimilar metals, one soft
and another hard. are used. All steel
plates could be used and satisfactory
results obtained. Aside from the plates
you might look over the thrust bear
ings, for II worn to any extent they
may the trouble you mention.
'' q hScF STo10 " 9dooftUS cause
q motor to knock7
Poor gasoline would quite probably
cause a knock In the motor. The low
quality fuel may cause slow BURNING
In n or more cylinders. Slow burn
ing will sometimes cause a preignition
knock. Continued use OF a low grade
fuel may cause much carbon to deposit
on the piston, and this will make a pre-.
ignition knock. The knock is caused
: by the piston striking the cylinder wall.
Would On excess Of oil or too LITTLE oil
cause the valves to need grindina soon.
Or than under ordinary conditioner
Should too much oil be fed there is a
possibility Of carbon being deposited
in quantities, due to the burning of
the excess oil. This carbon gets into
the valve seats and the valve faces
and causes pitting. az 1t Is called. and
consequent improper seating and loss
Of compression win follow. The feed
ing Of too small an amount OF oil hard
" would q loss Of compression
through the valves. But lack OF lubri-
t-~ka-- ~ -spr