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To further
pursue our commitment to pioneer advances on the
aircooled platform, LN Engineering has teamed up
with Jake Raby, of Aircooled Technology, to
bring your Porsche 356 and 912 engine into the
21st century to a new level of aircooled
precision performance, never before achieved
with this level of performance and reliability!
As
most everyone already knows, LN Engineering is
home to the only 1800 and 1883cc big bore kits
for the Porsche 356 and 912 that don't sacrifice
reliability for performance. Thanks to the
phenomenal results attained by fellow 356
enthusiast William Noblitt with his 1800cc
engine and our customer's desire for
displacement with the successful introduction of
our 1883cc kit, we've decided to modernize the
356/912 engine, and in doing so, we plan on
breaking the 100hp per litre barrier, and do so
without sacrificing reliability and drivability.
For those of you who aren't
familiar with William Noblitt, he's a vintage
racer who also builds 356/912 engines as a
hobby, and does so with the dedication and
passion that makes these engines and cars so
great. 1800ccs doesn't limit him in the
slightest, going from street to track with ease.
160 HP and 148 ft/lb of torque, with peak HP by
5500 rpm and no need to spin past 6000 rpm,
there's no loss of driveability. In fact, we've
never seen a torque curve so flat other than on
large 2.6-3.0L Porsche 914 engines or turbo
911s!
Yet the best testimonial are
the numerous emails I received from an
enthusiastic and proud W. Noblitt:
April 10th.
Charles, finished the dyno work today. Didn't
spend a tremendous amount of time on the dyno
but got it awfully darn close. The readouts are
not direct so the data has to be put in a spread
sheet to give the actual torque / horse power
figures. I'll share that with you when I get the
figures. Will say that Les Long from Air Power
Racing who has the dyno said the figures were
getting real close to what he is getting out of
his race engine. Of course he is running at
least 2 points higher a compression ratio with a
little more than .050" additional lift at the
cam and about 30 degrees more duration, a 1720
piston/cylinder set up, considerably lighter
flywheel/pressure plate, etc in his all out race
engine. His horse power and torque are
considerably higher up the RPM range than mine
due to the radical cam.
May
3rd: You will be happy to hear that I ran
the engine in my Convertible D (photos
enclosed) at the Intermountain Region PCA's club
race one day in Las Vegas this past weekend. I
performed flawlessly and amazingly. I used to
race Formula V about 25 years ago (though I
haven't been on a track a speed since) so
possibly I have a little more experience on
track than some of the drivers there so some of
the comparisons may be misleading yet the
numbers are true.
During the weekend in the last 2 sessions once I
got used to the car and engine there was only
one car that passed me, was either a late model
911 Carrera or 993, and that was only under
breaking as my old drum breaks were essentially
nonexistent after slowing the car down 3 or for
times from 120 MPH. Incidentally, the car that
passed me got pushed so hard through turns
1-4 that it didn't make turn 5-- so the torque
and power this thing is putting out is great.
People watching said the car appeared to be
faster through the infield portion of the track
than any of the other cars there.
At then of the two straight that are associated
with the oval, I was turning between 7000-7500
RPMS in 4th gear with a top speed of around 120.
Might have been able to get a little more out of
it had I not had to straight slowing so early
before the corners at the end of the straights.
Sessions were 20 minutes long and there was none
of the loss of power/speed that Duane was afraid
there would be going down the long straights--
that he mentioned was a problem with the
aluminum/biral cylinders that Porsche initially
used with the Super 90s.
Should also mention that Les Long was my
instructor and for the first 3 laps of the
opening session drove the car to show me the
track. He said the car pulled as good as his
race car, it just topped out earlier due to the
milder cam.
September 9th.
After the dyno runs I installed it in my
Convertible D and did some incidental driving
and ran it in a hill climb. The hill climb was
one I do every year and I didn't quite meet my
expectations. I was 2 seconds faster than I had
ever been before, yet it was an extremely cold
day and the tires were not sticking at all or I
would have easily gotten under 2:10 which has
been my goal for years. Still got within tenths
of seconds.
William Noblitt can be
contacted by
email to answer any of your questions or
share his experiences with the 1800cc kit. He is
planning a larger 1883cc engine based on our
1.9L kit for his race car in the near future and
should allow him to lead the pack by a larger
lead than he already has!
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