Since the introduction of the Elise in 1995 the car has become more perfect, more comfortable but also heavier. As a result, Elise enthusiasts strive for a more dynamic performance, even after the introduction of the new Toyota Powertrain.
We asked our customers for their wishes and priorities and, accordingly, set ourselves the following goals:
- Power output between 250 and 260 hp
- Significant increase of torque mainly between 3000 and 6000 rpm
- "Plug&Play" solution without mechanical engine mods
- Everyday use, high life span of the engine
- Affordable costs
To realise this we came up with 3 technical alternatives
- the " classic" turbocharger
- the mechanical driven charger like a Roots or Eaton supercharger
- the mechanical driven centrifugal supercharger
After many discussions about the advantages and disadvantages of these concepts we decided to go with the centrifugal supercharger.
The centrifugal supercharger has some technical advantages versus the turbocharger:
- typical non turbo car powerband but with much more torque at low and middle revs
- lower thermal load to the piston and exhaust valves
- same cam profiles than a non turbo engine
- lower thermal load to the engine bay peripheric
- standard exhaust system
The centrifugal supercharger further has the following advantages over the "classic" supercharger like Roots:
- very high effectiveness (up to 80%)
- low noise (not like for example the Lysholm Charger)
- lower charger and intercooler temperature
- much lighter system like a "classic charger"
- easy boost control
- no big modifications on the standard inlet manifold necessary
- Plug&play fitting
and also a price of less than EUR 10,000 (including VAT) including fitting and TÜV
Technical Data:
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Base engine:
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Toyota Typ 2ZZ-GE
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Capacity:
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1795 ccm
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Bore x stroke:
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82 x 85 mm
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Compression ratio:
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11,5 : 1
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Valve train:
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VVTL-i valve train with variable valve lift at inlet and exhaust cam and variable valve timing at inlet cam
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Power:
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192 hp at 7800 rpm (estimated)
188,5 hp at 7500 rpm(at our reference car on rolling road)
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KOMO-TEC Elise 250 with Turbodrive-Charging
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Charger:
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Mechanically driven centrifugal supercharger.
Lubrication and cooling of the charger through a seperate oil system with pump and oil cooler
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Charger speed:
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92000 rpm at max power
120000 rpm maximum speed
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Boost:
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0,40 bar
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Intercooling:
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Air/Water heat exchanger with separate water system and electrical water pump
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Air temperature:
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Difference before/after Intercooler 60°C
Difference cooled air after Intercooler versus the inlet air temperature is less than 20°C
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Boost difference:
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Less than 15 mbar
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Enginemanagement:
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Modified standard ECU with individually mapped ignition and injection timing
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Power:
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258 hp at 7800 rpm and 0,4 bar boost
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Torque:
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248 Nm between 4200 und 6500 rpm
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Consists of:
- Supercharger KT
- Water/air heat exhanger and intercooler
- Samco hoses
- Boost tubes in alloy
- Boost recirculation valve
- Modified standard ECU
- Brackets and tensioners
- KT-Carbon airbox system for 250S
- Power Curve
- Tüv approval
- Fitting
Price EUR 9,100
