A survey of The Austin-Healey 100/6 BN4 Sports Car, covering
advancement, significant highlights, and specialized information of this the
main model in the range.
Right now, offer a nostalgic take a gander at the
Austin-Healey 100/6 BN4, one of a first class gathering of exemplary vehicles,
which was fabricated during the period 1956 to 1959.
The Record Breaking Cars
The Streamliner
In 1956, two games autos were taken to the Bonneville Salt
Flats in Utah as a major aspect of Donald Healey's fantasy about going at in
excess of 200 mph.
The principal vehicle depended on a 1954 Austin-Healey BN1,
controlled by a supercharged, 2639 cc, BMC C-Series, 6-chamber motor with a
four speed gearbox.
Inferable from its shape, it was known as the
"Streamliner". Indeed, this motor, in its standard structure, would
control the prospective Austin-Healey 100/6 games vehicle.
The supercharged motor was altered by Austin until it had
created 292 bhp at 5000 fires up. Now, they were sure that the vehicle was
equipped for arriving at 217 mph.
One shortcoming of the vehicle was its angle back pivot
which, attributable to the outrageous force produced, could fall flat if the
vehicle quickened excessively quick.
Before being dispatched to America, the vehicle got broad
streamlined testing in an air stream. Thus, it was consented to evacuate the
vehicle's 1954 back balance so as to improve solidness.
On ninth August 1956, during the principal trial, as the
vehicle arrived at 200 mph, the supercharger fizzled in the midst of a
tremendous blast.
In the wake of receiveing new parts from England, the
vehicle was fixed at a nearby help station.
On 21st August, Donald Healey set off on the first of two
necessary runs, one toward every path.
During the primary run, he accomplished 204 mph before the
supercharger, by and by, exploded.
After brisk fixes, he arrived at 197 mph on the second run
which gave him a normal speed of 201.1 mph. He had accomplished his fantasy
about arriving at 200 mph.
The Endurance Car
The subsequent vehicle taken to Bonneville in 1956 was known
as the Endurance Car, and was an Austin-Healey BN2 sports vehicle fitted with a
long nose.
It utilized a standard 2639 cc motor with a six port head,
three twin stifle Webber carburettors, a pressure proportion of 10:1, and
created 160 bhp.
Be that as it may, further improvement on it raised the
yield to 164 bhp at 5500 rpm when running on a blend of equivalent extents of
methanol, benzole, and premium evaluation petroleum.
On ninth August 1956, when motor testing started, issues
with fume lock made the preliminaries stop.
On fourteenth August, further issues with failing were
experienced.
Along these lines, with issues settled, the motor was fitted
into the body, worked via carmakers Jensen, with the cockpit adjusted to take
after a solitary seat racer.
Carroll Shelby and Roy Jackson-Moore, between them, broke
the 150 mph hindrance with the Endurance vehicle.
The two record breaking endeavors were directed to agree
with the dispatch of the new Austin-Healey 100/6 games vehicle in September
1956.
The Endurance vehicle was painted in the two tone shading plan
of Healey Blue and White, and donned an oval grille with wavy level bars that
should have been joined in the imminent dispatch.
The 100/6 BN4
The 92 bhp created by the fundamental C-Series motor was
viewed as lacking to control the new 100/6 particularly since its forerunner,
the 100/4, delivered 90bhp, and was exactly 330 pounds lighter.
Therefore, because of further work on the motor, yield was
expanded to 102 bhp at 4600 fires up.
This underlying variant of the 100/6 BN4 sports vehicle had
just two bay ports which, joined with flat 1.5 inch H4 SU carburettors, made
for troublesome motor relaxing.
Albeit 0-60 mph time was not as much as that of the 100/4,
the new vehicle had a much smoother motor, with great mid range torque, which
made for easy long separation fast driving.
In late 1957, the BN4 got another chamber head with a six
port aluminum channel complex, and two bigger 1.75 inch HD6 SU carburettors.
Together with bigger valves and a pressure proportion raised
to 8.7:1, the motor currently created 117 bhp at 4700 rpm, with an improvement
in both increasing speed and top speed.
This six port head was the aftereffect of the 1956 record
breaking autos.
In 1956, the 100/4 BN2 sports vehicle was eliminated
similarly as BMC was justifying its scope of motors as follows: A-Series being
850 cc, B-Series being 1500 cc, and C-Series being 2600 cc.
Since the Austin A90 and Wolseley 6/90 cantina vehicles were
right now utilizing a C-Series, 6-chamber motor of 2639 cc dislodging, it was
proposed that this unit could supplant the current 2660 cc, 4-chamber unit
utilized in the BN2.
100/6 BN4 Specification:
2639 cc, 6-chamber, overhead valve motor
A two port chamber head at first, later supplanted by a six
port
Two HD6 SU carburetttors
Four speed gearbox with overdrive on the main two
apparatuses
Autonomous front suspension with a live hub at the back
Water driven drum brakes all round
Windscreen was currently fixed and could never again be
collapsed down
Two periodic back seats (2+2 variant) until mid 1958
Since the new 6-chamber motor was bigger than its
substitution, a hat scoop was included request that the radiator, which had now
been pushed ahead, was away from the cap.
Besides, so as to expand the intrigue of the vehicle, Donald
Healey included two intermittent back seats. Subsequently, it was important to
expand the length of the skeleton by two inches.
The 2+2 form was ended in mid 1958, and was just offered as
a discretionary extra, since the two seater adaptation turned into the more
attractive.
Aside from 284 units worked with right hand drive for the
home market, every one of the 100/6 creation was sent out to the US.
In the last piece of 1957, the production of the BN4 moved
from the Longbridge processing plant to the MG office at Abingdon.
Creation of the BN4 finished in 1958, when it was supplanted
by the two seater, 100/6 BN6 variation.
This denoted the finish of the Austin-Healey 100/6 BN4
Maybe this walk around a world of fond memories may have replied,
or if nothing else shed light on, a potential inquiry:
Which Austin-Healey Sports Car is Your Favorite?
Be that as it may, should this inquiry despite everything
stay unanswered, I will audit, in some detail, in future articles inside this
site, the whole scope of Austin-Healey sports autos which were included in the
essential period crossing 1953 to 1972.
I trust you go along with me in my nostalgic ventures
"down games vehicle a world of fond memories".
On the off chance that you would mind to see my
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