Voxwagen
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10
years
of living
with a 20 year old VW
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Now with 2 old cars! |
The boys at Technik
Motorwerks were pretty understanding of my desire to have
the car
measured on their dyno. After a day of highly tuned Hondas
they were
entertained by the idea of running their first Fox. It was
also the
first car they had tested with a Child's Seat in it.
I didn't get a chance
to run the car on a dyno when it was completely stock.
This is with the
exhaust replaced
by a full Techtonics Tuning exhaust and a K&N filter.
I am pretty pleased with
these numbers. The Fox engine was rated by the factory
as producing 93
Ft/lbs
of torque at 3250 RPM and producing 81 HP at 5500 RPM.
These numbers
would
have represented the output of the motor at the flywheel
and not taken
into
account any power loss through the drive train. The car
is now
producing
97 ft/lbs of torque at 3300 RPM and 82 horses at 5500 AT
THE
WHEELS, not
at the Flywheel.
I feel this demonstrates that the JN code engine was
certainly capable
of producing power on par with the other 8V engines of
the day. The
85-88 CL engines were rated at 90 HP. The restrictive
exhaust that is
stock on the Fox was another way that VW ensured that
the Fox was
perceived as an
economy car. With the cars light weight it may have
embarrassed the
GTis
of the day if it had not been purposely de-engineered.
It was a
conspiracy.
With 80.5 WHP the Fox would have the same HP to Weight
Ratio as a MK 1 GTI.
The car now has a better HP to Weight Ratio than a MK 1
GTI.
The graph shows
4th gear pulls. 104.3 Ft lbs of Torque. 88.3 HP
Modifications were 2P Transmission, Eurospec Solid
Lifter Head, G-grind Cam, Techtonics Exhaust, K&N
Filter
and Large Throttle Body.
These mods got the car with
2 HP of the MKII 8V GTI
90.5 WHP would have given the car the same Weight to HP
ratio and a MKII 8V GTI.
A higher compression engine and its smart ECU give the
GTI its extra power.
