Stock Hatch 1600 Rules & Regulations 2009 onwards
Amended MC 03/12/2009
STOCK HATCH 1600
Rules & Regulations
Valid from December 2009 until further notice.
Amendments to rules are highlighted
These rules & regulations have been drawn up from the Original Stock Hatch rules taking in
to account any input from drivers and scrutineers, so as to give every stock hatch driver
within NASA an equal chance wherever they may race at and whoever they may race against.
Any stock hatch car not complying with these rules and regulations will race in its standard
NASA class.
A steering committee to be set up with nominated representatives from every club / league
with a stock hatch class, to meet during the year to discuss and amend the rules as deemed
necessary.
THE OBJECTIVE
To create a very low cost introduction to Autograss Racing which requires minimal car
preparation skills yet offers high-speed racing and room for some creative car building.
THE PRINCIPAL
All components should be standard, off the shelf, units. There should be no machining or
specialised fabrication in any car. The cars should be easy to build, run and police. The class
will work on the principal of honesty and trust.
Drivers will be expected to maintain cars in a tidy and presentable condition. Cars arriving at
scrutineering with obvious severe body damage will be turned away.
CONSTRUCTION RULES
These rules will be absolute until changes have been passed by the Stock Hatch Steering
Committee. It is envisaged that rule changes will only take place at the end of a racing season
and will be available in good time for winter build projects.
1. Any car attempting to defeat the spirit of the class will be deemed illegal.
2. All cars must comply, in every way, with a NASA class. Nominally Class Six but
five is possible. NOTE: Check class rules carefully or ask for advice. Some cars
cannot run in NASA classes. Unless a car fits in a NASA class it cannot be licensed,
this is beyond our control.
3. Cars must be Front Wheel Drive, hatchback vehicles with engine capacity between
1131cc and 1600cc with only two valves per cylinder.
4. Minis and their derivatives are not allowed. Metros may be used.
5. Forced induction is not allowed.
Stock Hatch 1600 Rules & Regulations 2009 on
Amended MC 03/12/2009
6. Any engine or gearbox may be fitted to any body shell provided that they are of the
same marque. e.g. an Astra or Nova may only have Vauxhall components; An Escort
or Fiesta may only have Ford components. The gearbox must fit directly on to the
engine without any modification to either the engine or gearbox. A flywheel shield
MUST be fitted.
7. Engine and gearbox must remain "as produced". (Due to the shortage of 1.6 Vauxhall
camshaft kits 1.4cc camshaft kits may be used). Engines are to be used in their
entirety – no mixing of components from different types / sizes of engines. Gearbox
internals must not be interchanged, but like for like exchange is acceptable.
8. The only machining allowed on engines is for STANDARD overhaul – No lightening
or balancing etc. Boring out to +20thou is permitted (even if this increases the
capacity beyond class requirements). Decking of blocks is prohibited. Three angle
valve seats are allowed, there must be no machining of the throats. Minimum head
thickness sizes will be given for 2011.
9. Minor modifications to engine/gearbox mountings only are allowed to facilitate
engine swaps. Engines intended for rear wheel drive cars may not be fitted.
10. Locked or limited slip differentials are not allowed. Cars will be subjected to spot
checks after races and any tight (3 lb-ft max) differentials will be deemed against the
spirit of the class and therefore illegal.
11. Engine/gearbox must be fitted in the original position
12. All engines must be drilled and be ready to be sealed. Provision to be made for rocker
cover and cylinder head and ECU sealing. Anyone who has NOT drilled their engine
will still be able to race but NOT be eligible for any points. If you are unsure where to
drill your engine please ask. For 2010 engines must be sealed before any points can
be scored.
13. Fuel injection is allowed provided it is standard on the engine used. Fuel injection
engines must remain injected. Non standard fuel pressure regulators are not allowed.
14. Fuel injected engines: Original injection system for the engine must be used including
management / control equipment. ECU is to be mounted in an easily accessible
position to allow for checking, sealing & replacing. ECU may be subject to random
checks and temporarily replaced by club or alternative ECU if required by the
scrutineers. The ECU to be identified to the car by marking of the club number on
them.
15. Air filter & housing free.
16. Non-injection engines: Carburettor, air filter & housing free providing the carburettor
fits directly on to the standard manifold without any adaptors or modifications to
either carburettor or manifold.
17. Inlet and exhaust manifolds must be standard for the engine used. No modification to
manifolds. Four branch manifolds are not allowed. Exhaust system beyond the
manifold is free.
18. Radiators are free but must remain in their original position as far as possible
19. Suspension system and mountings must be standard. Springs may be fitted from any
car within the same model range. E.g. Any Nova springs on any Nova, any Peugeot
205 springs on any 205 etc. Lowering springs may be used. No excessive lowering of
suspension - scrutineers decision is final!
20. Shock absorbers are free. Up rated shock absorbers must fit on original mountings
without modification. Adjustable spring platforms are not allowed.
21. Wheels and tyres are free but must comply with the NASA class rules.
Wheels must be of the same diameter on the same axle but can vary front to rear,
tyres can be of different profile height.
22. Skinning of doors is allowed (on 4 door cars only the front doors may be skinned).
No other modification to the shell is permitted other than the filling of lighting
apertures etc. The entire floor, roof and bulkheads must be as manufactured.
23. Front & rear bumpers must be fitted; if not original they must be of similar size and
design.
24. Body shells must retain their original silhouette. I.e. No scoops, bonnet bulges,
spoilers etc unless standard. Cutting or widening of wheel arches is allowed as is the
fitting of arches & side skirts in accordance with NASA rules.
25. The over riding principal is that cars must be constructed from standard parts
appropriate to the manufacturer of the body shell. The scrutineers’ decision will be
final. Any car attempting to defeat the spirit of the class will be deemed illegal. If you
are in any doubt at all, PLEASE ASK FIRST, we would rather spend a few minutes
on the phone than have to "fail" your car.
26. Definition of standard: A mass-produced vehicle, or parts thereof, which has been
available for general sale through the manufacturer or importer’s entire dealer
network in the United Kingdom. Any vehicle or part of a vehicle, which may be
considered as a "homologation special" is excluded. Engine, drive train or body parts
sold or intended for competition use are not allowed with the exception of springs,
shock absorbers, arches & side skirts as stated above.
27. Every car registered as a Stock Hatch will be subject to a selling rule. Any driver may
offer a sum of £400 to purchase any "Stock Hatch" engine/gearbox unit at the end of
the racing season. The end of the racing season is defined for this purpose as any time
after the last meeting held by a participating club. However the selling rule must be
invoked by a cut off date of November 30th (11:59 PM). The owner of the engine
must accept this offer. The buyer must complete the purchase within seven days of
the offer. Any engine bought under this rule may only race in a Stock Hatch 1600. A
person could only invoke this rule once during the year and an engine could only be
purchased on one occasion during the year. A formal offer would have to be made to
the committee of the club the car is registered with and the owner informed by them,
so that any offers would be formally recorded
28. For the purpose of the "selling rule" the engine/gearbox unit is defined as: the
complete engine, the gearbox/differential, manifolds, carburettor's / injection
equipment but not the wiring loom or ECU.
29. Driver’s may only claim the right to buy an engine under the "selling rule" if they are
registered to drive in Stock Hatch 1600 during the current season and have already
raced a Stock Hatch 1600 which they own in the current season. If you haven’t got
one, you can’t claim one.
30. Any "selling" dispute may be referred to the current Chairman of the licensing club
(or other person's) appointed by him/her. That person’s decision will be final and
binding on all parties.
31. The selling rule does not affect the rights of an owner to voluntarily negotiate the sale
of an engine for a sum other than £400.
32. It is accepted that these rules may need to be altered or defined however it should be
noted that the principal of no modification remains absolute. Drivers are welcome to
ask the steering committee for a change or definition of the rules. Details of any such
changes or definitions will be made available to all Stock Hatch drivers.
RACING & LICENCING
1. Stock Hatch 1600 will be run as a separate class.
2. All Stock Hatch 1600 cars will run off a straight-line start regardless of specification.
3. Stock Hatch 1600 cars will be licensed according to their NASA class.
4. In handicap races cars will start according to the organizing clubs discretion.
5. Races will be run according to NASA rules, e.g. Non contact.
IF YOU HAVE ANY DOUBTS, CONTACT ANY MEMBER OF THE STEERING
COMMITTEE.
