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S1 K-series EngineThe S1 uses a standard K-series engine as developed by Rover for use in its 200/25, 400/45 and 600 series of cars. It is also used in the MGF and a wide range of other performance cars such as Caterhams. It is a 1796cc, 16-valve, all aluminium engine with compact dimanesions and light-weight. The unit provides 118bhp in its relatively unstressed application within the Elise. It was originally designed as a 1.4 litre unit but was expanded out to 1.6 and 1.8 litres to increase its application base. This expension has introduced some areas of weakness which are covered later.
There are no On-Board Diagnostic systems on the S1 Elise, the diagnostic plug-in system used at the dealers simply checks the function of all sensors and systems at the time the test is performed.
There are a huge number of companies offering upgrades for the K-series engines, including normally aspirated, turbo-charged and super-charged upgrade packages. Before you embark on an upgrade programme there are a number of 'must read' sites to visit:
Power Train ProjectsPower Train Projects are a well respected and worked with Lotus on the Sport 135 upgrade (PTP140) and a PTP 160bhp upgrade. Their site is well worth a visit.
ThierlertThielert are well respected in Europe for their 150bhp and 180bhp conversions.
Turbo TechnicsTurbo Technics sell a number of superchargered conversions from 190bhp to 270bhp. I've test driven an Elise S1 TT190 and was very impressed. More information can be found on the Yahoo TT e-group.
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Copyright © Rob Collingridge 2009 - Last updated 04 Apr 2002