| 3 Technical Regulations
3.1 Eligible Vehicles
All cars must be of the type known as Lotus 7 or Caterham 7 and will be
placed in one of the following classes.
3.2 Classes
Class 1:
Lotus or Caterham Sevens powered by single cam engines up to 1600c.c.
Also Caterham Sevens which fully comply with the current technical
specification for the ‘2006 Caterham Graduates Championship’ – ‘Caterham
Graduate Class’ and ‘Caterham Super-Graduates Class’ specification cars
only. Cars must fully meet the specification relevant for engine type and
year of construction. No further modifications are permitted. For tyres
see below.
For Ford OHV ‘Kent’ Crossflow 1600cc engines ONLY there is a maximum
rebore allowance of 60 thousandths of an inch.
Tyres to be listed in 2005 or 2006 MSA Technical Regulations List 1A
only.
Cars powered by non-car derived engines or equipped with sequential
gearboxes are not allowed in this class.
Class 2:
Lotus or Caterham Sevens powered by single cam engines of 1601cc and
greater. All Lotus Twin Cam engines and Rover K series 1400cc engines.
Rover K series 1600cc engines - provided induction is via the standard
production plenum.
Rover K series 1800cc engines (up to 140bhp only) - provided induction
is via the standard production plenum.
This excludes all R300, R400 and R500’s.
The following modifications are permitted to Rover K series 1600cc
engines: K16 cylinder head porting retaining the standard valves, vernier
camshaft pulleys, 52mm throttle body and the use of forged pistons.
The following modifications are PROHIBITED to Rover K series 1600cc
engines: The use of VVC or VHPD cylinder heads, reprogrammable ECUs eg
Emerald, VVC plenum chambers and a throttle body greater than 52mm.
The following modifications are permitted to Rover K series 1800cc
engines: vernier camshaft pulleys, 52mm throttle body and the use of
forged pistons.
The following modifications are PROHIBITED to Rover K series 1800cc
engines: Any porting of the K16 cylinder head or the use of VVC or VHPD
cylinder heads, reprogrammable ECUs eg Emerald, VVC plenum chambers and a
throttle body greater than 52mm.
Tyres to be listed in 2005 or 2006 MSA Technical Regulations List 1A
only.
Cars powered by non-car derived engines or equipped with sequential
gearboxes are not allowed in this class.
Class 3:
Lotus or Caterham Sevens powered by single cam engines of 1601cc and
greater. All Lotus Twin Cam engines and Rover K 1400cc engines.
Rover K series 1600cc engines - provided induction is via the standard
production plenum.
Rover K series 1800cc engines (up to 140bhp only) - provided induction
is via the standard production plenum.
This excludes all R300, R400 and R500’s.
The following modifications are permitted to Rover K series 1600cc
engines: K16 cylinder head porting retaining the standard valves, vernier
camshaft pulleys, 52mm throttle body and the use of forged pistons.
The following modifications are PROHIBITED to Rover K series 1600cc
engines: The use of VVC or VHPD cylinder heads, reprogrammable ECUs eg
Emerald, VVC plenum chambers and a throttle body greater than 52mm.
The following modifications are permitted to Rover K series 1800cc
engines: vernier camshaft pulleys, 52mm throttle body and the use of
forged pistons.
The following modifications are PROHIBITED to Rover K series 1800cc
engines: Any porting of the K16 cylinder head or the use of VVC or VHPD
cylinder heads, reprogrammable ECUs eg Emerald, VVC plenum chambers and a
throttle body greater than 52mm.
Tyres to be any road legal E-marked tyre or listed in 2005 or 2006 MSA
Technical Regulations List 1B.
Cars powered by non-car derived engines or equipped with sequential
gearboxes are not allowed in this class.
Class 4:
Any Lotus or Caterham 7 not meeting the engine requirements of classes
1, 2 or 3.
Cars powered by non-car derived engines are allowed in this class.
All cars must be fitted with an operational reverse gear.
Tyres to be listed in 2005 or 2006 MSA Technical Regulations List 1A
only.
Class 5:
Any Lotus or Caterham 7 not meeting the engine requirements of classes
1, 2 or 3.
Cars powered by non-car derived engines are allowed in this class.
All cars must be fitted with an operational reverse gear.
Tyres to be any road legal E-marked tyre or listed in 2005 or 2006 MSA
Technical Regulations List 1B.
Class 6:
Any Lotus or Caterham Seven not meeting the requirements of any other
class.
3.3 General Technical Requirements
Cars in classes 1 to 5 must run in a fully road legal condition (i.e.
taxed, insured and
MOT’d where applicable). Competitors are advised that they may be asked
to provide documentary proof of this at an event.
Cars in classes 1 to 5 must have normally aspirated engines.
In the interests of environmental protection all cars will be subject
to a maximum noise limit of 108dB at 0.5m. This will be tested at each
round.
Cars which have technical modifications deemed by the Championship
co-ordinator not to meet the basic spirit of the technical regulations
will be allocated to the most appropriate class.
All cars must comply with section L and Q of the 2006 MSA Technical
Regulations. All cars must be fitted with a Safety Rollover Structure to
section Q 2006 MSA Technical Regulations. Competitors are advised that
the traditional standard roll-over bar as supplied by Caterham does not
meet these requirements.
Any car fitted with the traditional standard roll-over bar that
arrives at an event will NOT be allowed to compete.
Additional Notes for Competitors
These notes are written chiefly for the benefit of competitors who are
new to hillclimbing and sprinting. They give a brief introduction to how
the championship works.
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