Lotus engine upgrades

Initially use the Lotus parts bin to upgrade to the Lotus 912 HC spec (180bhp).

After this:

Step 1

2.2 litre (Developed in Lotusbits Lotus Micra during 2005 & 6 season)

200 to 220 bhp
Engine - £4000 to rebuild and upgrade your standard HC engine - £5000 if donor engine supplied
HC spec plus cnc ported head and inlet manifold, +1mm inlet valves, L14 cams, oil restrictor to head, balanced bottom end
Actual power developed by the engine will be determined by the carburettor / fuel injection setup and the Exhaust manifold and system
Peak power will be between 6700 and 7300 rpm
Rev limit 7700rpm

This is aimed at road use or clubmen competition cars

For competition cars there are further modifications required to the sump and oil system

Step 2

2.2 litre (Developed in Lotusbits Lotus Micra for 2007 & 8 season)

220 to 250 bhp
Engine - £6500 to rebuild and upgrade your standard HC engine - £7500 if donor engine supplied
As per Step 1 plus ultra light 13:1 compression pistons, lightweight steel rods, uprated valve springs, ultra high lift cams, steel followers baffled sump
Actual power developed by the engine will be determined by the fuel injection setup / intake length and the Exhaust manifold and system
Peak power will be around 8000 rpm
Rev limit 8500rpm

This is aimed at competition cars

Step 3

2.5 Litre Road use (Detuned version of Lotusbits Lotus Micra engine used during 2009 season)

250 to 270 bhp
Engine - £9000 to rebuild and upgrade your standard HC engine - £10,000 if donor engine supplied
Custom 2.5 Litre steel crank and rods.
Custom pistons to match
Peak power between 7000 and 7500 rpm

Contact Lotusbits for further technical details

Step 4

2.5 Litre Competition use (Currently used in Lotusbits Lotus Micra, 2009 season)

Contact Lotusbits for further technical details