DTM Racing
11-04-2013, 06:51 AM
Alright. After yesterdays discussion I think we have the framework for SM(V) worked out. Here are the tentative rules; if there is something wrong, let me know and l will make changes to the thread's main post.
16(a). STREET MODIFIED (VINTAGE) CATEGORY
16(a).0.A. Purpose
To serve as a membership recruitment and retention tool by providing
a natural competition outlet for auto enthusiasts using classic American
streetable
sport sedans, trucks and "hot rods" equipped with drivetrain and suspension modifications
that are beyond those allowed in the Street Prepared category.
16(a).0.B. Classes
1. Street Modified (SM), a class for sedans/coupes as described below.
16(a).0.C. Vehicle Eligibility
1. Street Modified Vintage (SM(V)):
All sedans/coupes/trucks of American manufacture built up to and including 1978
(models which were originally equipped with a
minimum of four seats and four factory seat belts, not sports car
based). Trucks and hot rods excluded, but shall adhere to the rules that follow.
a. Sample Vehicles:
Chrysler: Dart, Charger, Cuda
Ford: Mustang, Galaxie, Tourino
General Motors: Camaro, Chevelle, Impala
b. All SM eligible sedans/coupes excluded from SM for failure to
meet weight requirements(TBD) shall be moved to CP or XP as rules allow.
16.1 ALLOWED MODIFICATIONS
A. All Stock, Street Touring®, and Street Prepared category modifications
are authorized. Except as noted by these rules and the referenced
rules, vehicles must be as originally delivered including all
road-going components such as lights, wipers, interior from rear of front seats forward, heater, etc.
B. Competitors may pick and choose between all Stock, Street Touring
®, Street Prepared, and Street Modified category allowances
when preparing a Street Modified category car. Apparent conflicts
between inherited rule sets from Section 16.1.A shall not prohibit
any specific inherited allowance. Allowances inherited from Section
16(a).1.A may not incorporate Street Modified-specific allowances. Aftermarket
spec parts may not be used to substitute for parts which are
required to remain stock.
C. Brakes, including calipers, caliper mounts, disks, drums, lines, backing
plates, pedals, boosters, master cylinders, handles, ABS systems,
proportioning valves, etc., are unrestricted. Brake rotor/drum
friction surfaces must be 100% ferrous metallic. Carbon or ceramic
composite brake components (except pads) are expressly prohibited.
Standard parts, per Section 12.4, are exempt from this restriction.
A functional, redundant emergency (parking) brake is optional.
D. Drivetrain and related components (induction, ignition, fuel systems,
etc.) are unrestricted except for the following limitations:
1. Engine block must be a production or aftermarket unit manufactured,
cast of the same alloy and badged
the same as the original standard or optional engine for that model.
Badges that exist as marketing aliases for the manufacturer
will be recognized as equivalents. Swaps involving makes related
only at a corporate level are not recognized as equivalents. Models
produced as a joint venture between manufacturers may utilize
any engine from any partner in the joint venture, provided that
an engine from the desired manufacturer was a factory option in
that particular model (e.g., Eagle Talon, available originally with
either a Mitsubishi or Chrysler engine, may use any motor from
Chrysler or Mitsubishi). This allows engine blocks manufactured
as production units for sale in other countries such as Japan or
Germany.
2. Maximum engine displacements per class are specified in
Appendix A(TBD).
3. Fuel System
a. Any fuel line(s) may be used. All non-standard fuel line(s) passing
through the passenger compartment shall be made of metal,
metal braided hose, or equivalent (e.g., Nomex, Kevlar, or
nylon braided hose) with AN Series threaded couplings, or entirely
covered and protected with a metal cover.
b. Any fuel pump(s), filter(s), and pressure regulator(s) may be
used. Such components may not be located in the passenger
compartment but their location within the bodywork of the car
is otherwise unrestricted. If a mechanical pump is replaced,
a blanking plate may be used to cover the original mounting
point.
c. A cool-can, not exceeding one gallon in volume, may be used.
The cool-can may not be installed in the passenger compartment.
d. The fuel tank may be modified or replaced. If the fuel tank is
modified or replaced, the following restrictions apply:
1. No part of the fuel tank or fuel cell shall be closer than 6”
(152.4mm) to the ground unless enclosed within the bodywork
and mounted above the floor pan. A metal bulkhead is
required that provides total separation between the driver
compartment and the compartment containing the fuel tank
and/or filler/neck. This includes fuel tanks that are flush
mounted with driver compartment panels or otherwise exposed
to the driver compartment. Fuel filler doors in the driver
compartment must be positively fastened (non-metallic
fasteners are not allowed).
For the purposes of these rules, a fuel tank consisting of a
structure containing a fuel bladder is considered to be the
entire fuel cell including the containing structure. The containing
structure of a fuel cell does not qualify as a bulkhead.
A separate metal bulkhead must isolate the fuel cell from the
passenger compartment.
2. Internal body panels may be modified to accommodate the
installation of the fuel tank as long as such modifications
serve no other purpose. In the event installation includes encroachment
into the driver’s compartment, a metal bulkhead
shall prevent exposure of the driver to the fuel tank.
3. Fuel tank breathers shall not vent into the driver/passenger
compartment.
4. Minimum capacity of a non-standard fuel tank/cell shall be
no less than 5 gallons.
Engine and drivetrain mounts are considered part of these
allowances and any material is permitted. The allowances of
Section 16(a).1.P may be used to affix brackets, but these brackets
shall serve no purpose other than engine and drivetrain
mounting (e.g., they may not provide chassis stiffening).
E. Suspension components are unrestricted as long as they use the
original attachment points. Modification of factory pickup points shall be
allowed by elongation or drilling of new holes (e.g. Shelby "drop mod")
For the purposes of this rule, “suspension”
is defined as any item that is designed to move when a wheel
is deflected vertically. This includes shocks/struts, control arms,
steering knuckles, uprights, etc., but not tie rods, steering racks, and
subframes. In addition, shock absorber/strut upper mounts are to be
considered suspension components.
F. Steering modifications are permitted as follows:
1. Steering components, including the steering rack and/or box, tie
rods, idler arms, power assist devices, and related components
may be replaced, added, moved, or removed. Wheel-mounted electrical
switches such as those for the horn, radio, cruise control, or shifter
may be relocated and/or replaced, or eliminated.
2. Rear-steer devices may be replaced with solid links.
3. Supplemental steering gear boxes or steering quickeners are allowed
as long as they are mounted in accordance with Section
16.1.F.1.
4. Steering wheels and associated mounting hardware may be replaced.
This does not permit removal or modification of the steering
column or column-mounted accessories. OE wheel-mounted
electrical switches such as those for the horn, radio, cruise control,
or shifter may be relocated and/or replaced, or eliminated.
G. Subframe connectors are allowed as per Street Prepared Section
15.2.E.
H. Subframe bushings may be replaced with bushings of any material
as long as they fit the original location. Offset bushings may not be
used.
I. Front hoods (engine covers), engine covers, trunk lids and hatches
not containing glass, front fenders, rear fenders not part of chassis
structure (unibody), front & rear facias, and side skirts may be
modified or replaced, and may be attached with removable fasteners.
Associated hardware including latches, hinges, window washer
system, and hood liners may be modified, removed, or replaced.
Main body and frame or unitized structure must be of 1978 or earlier
construction. No aftermarket replacements of body or subframes shall
be allowed. Vehicle VIN must correlate with vehicle make and model.
J. Tires shall be limited to 200 tread wear rating by the manufacturer.
K. Rear passenger seat(s), including restraints and associated hardware
may be removed.
L. Aerodynamic Aids: Wings may be added, removed, or modified. Non-
OE wings may only be attached to the rear deck/hatch area behind
the centerline of the rear axle. The total combined surface area of all
wings shall not exceed 8 square feet as calculated per Section 12.9.
The number of wing elements is limited to 2.
Wings, and any component thereof, may not extend beyond the vehicle
width, as defined by the outermost portion of the vehicle doors,
less mirrors, door handles, rub strips, and trim. In addition, no portion
of the wing or its components may be more than 6” forward of the
rear axle, more than 0” beyond the rear most portion of the bodywork,
or more than 6” above the roofline of the vehicle, regardless of
body style. For convertibles and roadsters, the highest portion of the
windshield frame will be considered the highest portion of the roof.
Reinforcements to the wing mounting area may be used, but may
serve no other purpose. Body panels to which a wing mounts must
remain functional (e.g., trunk lids and rear hatches must open). Wing
endplate surface area is limited to 200 square inches each and limited
to a maximum of 2.
Except for standard parts, wings designed to be adjustable while the
car is in motion must be locked in a single position.
Canards are allowed and may extend a maximum of 6” (152.4mm)
forward of front bodywork/fascia as viewed from above. No portion
of the canard may extend past the widest part of the front bodywork/
fascia as viewed from above. Canard area will be measured in the
same manner as wings using Section 12.10. Canard area may not
exceed 15% of total wing allowance. The sum of canard area and
rear wing area may not exceed the total wing allowance.
M. Front splitters are allowed and shall be installed parallel to the ground
(within ±3° fore to aft) and may extend a maximum of 6” (152.4mm)
from the front bodywork/fascia as viewed from above. Splitters may
not extend rearward past the centerline of the front wheels. No portion
of the splitter may extend beyond the widest part of the front
bumper/fascia as viewed from above.
N. Removable OE hardtops, T-tops, targa tops, sunroofs, moonroofs,
and similar roof-mounted panels may be removed/replaced with alternate
panels provided that the area of interface is limited to the
original perimeter of the t-top, sunroof, etc. or utilizes the OE panel
mount points, and that the contour of any replacement panel surface
does not vary from the contour of the part being replaced by more
than 1” (25.4mm) in any direction. The material used to construct the
alternate panel and the method used to attach it to the interface is
unrestricted. Any actuation mechanism and the associated wiring, if
any, may be removed. Vehicles utilizing alternate (non-OE) hardtops
will be considered as open cars in regard to Section 3.3.1.
O. Radio/Stereo and airbag equipment and/or its component parts, in
cluding wiring, control modules, antennas, amplifiers, speakers and
their enclosures, etc. may be removed provided the part added, removed,
or replaced serves no other purpose. Any visible holes that
result from the removal of equipment must be covered with a cover
of unrestricted material. Covers may be used to mount gauges,
switches, etc.
P. Any minor modification, intended to allow or facilitate any allowed
modification, is permitted as long as it does not provide any intrinsic
performance benefit in and of itself, does not provide a weight reduction
of more than 1 lb, and is not explicitly prohibited elsewhere
within these rules.
This rule is intended to allow minor notching, bending, clearancing,
grinding; the drilling of holes; affixing, relocating, or strengthening of
brackets; removal of small parts, and similar operations performed
in order to facilitate the installation of allowed parts or modifications.
Minor strengthening, without relocation, of original chassis/suspension
pickup points is allowed. Examples include welding washers
restricting control arm mounting bolt movement, local reinforcement
of control arm chassis mounts, etc.
Competitors are strongly cautioned to make the minimum amount of
modification required to affix a given part, and to not make unduly
tortured interpretations of this rule. Modifications to the firewall in
order to allow for increased engine setback, and any modification
that changes the location of a suspension pickup point, are explicitly
forbidden. Plastic under-trays and covers below the vehicle may be
removed or modified as necessary to facilitate other compliant modifications,
but not added or enlarged.
Q. Ballast may be added. Ballast must be a maximum of 50 lbs. per
segment. It must be securely mounted within the bodywork.
R. OE side mirrors may be replaced by aftermarket units, provided they
mount in the same location, perform the same function as the OE
mirrors, and have a reflective surface area greater than 15 sq. in.
S. OE “pop-up” headlights may be replaced with static headlights, provided
the replacement units are intended for automobile use on public
roads as a primary means of illumination, and retain high and low
beams as originally provided by the manufacturer. Minor repositioning
of the headlights is allowed to accommodate the alternate headlight,
but the unit may not be relocated and the repositioning may
servce no other purpose. All associated hardware may be removed,
replaced or modified.
T. Alternate subframes are allowed to facilitate engine mounting only.
Suspension pick-up points on the subframe must retain standard geometry.
Weight of the subframe must be equal or greater than the
standard unit.
16.2 MINIMUM WEIGHTS (TBD)
Classes, displacements, and minimum weights are listed in Appendix
A. For the purpose of determining minimum weights, a mid-engine vehicle
is defined as one having a chassis configuration where the engine
block is not located entirely in front of the driver’s seat and is not far
enough back to be considered a rear-engine vehicle. Adjustments to
minimum weights are shown in Appendix A.
16(a). STREET MODIFIED (VINTAGE) CATEGORY
16(a).0.A. Purpose
To serve as a membership recruitment and retention tool by providing
a natural competition outlet for auto enthusiasts using classic American
streetable
sport sedans, trucks and "hot rods" equipped with drivetrain and suspension modifications
that are beyond those allowed in the Street Prepared category.
16(a).0.B. Classes
1. Street Modified (SM), a class for sedans/coupes as described below.
16(a).0.C. Vehicle Eligibility
1. Street Modified Vintage (SM(V)):
All sedans/coupes/trucks of American manufacture built up to and including 1978
(models which were originally equipped with a
minimum of four seats and four factory seat belts, not sports car
based). Trucks and hot rods excluded, but shall adhere to the rules that follow.
a. Sample Vehicles:
Chrysler: Dart, Charger, Cuda
Ford: Mustang, Galaxie, Tourino
General Motors: Camaro, Chevelle, Impala
b. All SM eligible sedans/coupes excluded from SM for failure to
meet weight requirements(TBD) shall be moved to CP or XP as rules allow.
16.1 ALLOWED MODIFICATIONS
A. All Stock, Street Touring®, and Street Prepared category modifications
are authorized. Except as noted by these rules and the referenced
rules, vehicles must be as originally delivered including all
road-going components such as lights, wipers, interior from rear of front seats forward, heater, etc.
B. Competitors may pick and choose between all Stock, Street Touring
®, Street Prepared, and Street Modified category allowances
when preparing a Street Modified category car. Apparent conflicts
between inherited rule sets from Section 16.1.A shall not prohibit
any specific inherited allowance. Allowances inherited from Section
16(a).1.A may not incorporate Street Modified-specific allowances. Aftermarket
spec parts may not be used to substitute for parts which are
required to remain stock.
C. Brakes, including calipers, caliper mounts, disks, drums, lines, backing
plates, pedals, boosters, master cylinders, handles, ABS systems,
proportioning valves, etc., are unrestricted. Brake rotor/drum
friction surfaces must be 100% ferrous metallic. Carbon or ceramic
composite brake components (except pads) are expressly prohibited.
Standard parts, per Section 12.4, are exempt from this restriction.
A functional, redundant emergency (parking) brake is optional.
D. Drivetrain and related components (induction, ignition, fuel systems,
etc.) are unrestricted except for the following limitations:
1. Engine block must be a production or aftermarket unit manufactured,
cast of the same alloy and badged
the same as the original standard or optional engine for that model.
Badges that exist as marketing aliases for the manufacturer
will be recognized as equivalents. Swaps involving makes related
only at a corporate level are not recognized as equivalents. Models
produced as a joint venture between manufacturers may utilize
any engine from any partner in the joint venture, provided that
an engine from the desired manufacturer was a factory option in
that particular model (e.g., Eagle Talon, available originally with
either a Mitsubishi or Chrysler engine, may use any motor from
Chrysler or Mitsubishi). This allows engine blocks manufactured
as production units for sale in other countries such as Japan or
Germany.
2. Maximum engine displacements per class are specified in
Appendix A(TBD).
3. Fuel System
a. Any fuel line(s) may be used. All non-standard fuel line(s) passing
through the passenger compartment shall be made of metal,
metal braided hose, or equivalent (e.g., Nomex, Kevlar, or
nylon braided hose) with AN Series threaded couplings, or entirely
covered and protected with a metal cover.
b. Any fuel pump(s), filter(s), and pressure regulator(s) may be
used. Such components may not be located in the passenger
compartment but their location within the bodywork of the car
is otherwise unrestricted. If a mechanical pump is replaced,
a blanking plate may be used to cover the original mounting
point.
c. A cool-can, not exceeding one gallon in volume, may be used.
The cool-can may not be installed in the passenger compartment.
d. The fuel tank may be modified or replaced. If the fuel tank is
modified or replaced, the following restrictions apply:
1. No part of the fuel tank or fuel cell shall be closer than 6”
(152.4mm) to the ground unless enclosed within the bodywork
and mounted above the floor pan. A metal bulkhead is
required that provides total separation between the driver
compartment and the compartment containing the fuel tank
and/or filler/neck. This includes fuel tanks that are flush
mounted with driver compartment panels or otherwise exposed
to the driver compartment. Fuel filler doors in the driver
compartment must be positively fastened (non-metallic
fasteners are not allowed).
For the purposes of these rules, a fuel tank consisting of a
structure containing a fuel bladder is considered to be the
entire fuel cell including the containing structure. The containing
structure of a fuel cell does not qualify as a bulkhead.
A separate metal bulkhead must isolate the fuel cell from the
passenger compartment.
2. Internal body panels may be modified to accommodate the
installation of the fuel tank as long as such modifications
serve no other purpose. In the event installation includes encroachment
into the driver’s compartment, a metal bulkhead
shall prevent exposure of the driver to the fuel tank.
3. Fuel tank breathers shall not vent into the driver/passenger
compartment.
4. Minimum capacity of a non-standard fuel tank/cell shall be
no less than 5 gallons.
Engine and drivetrain mounts are considered part of these
allowances and any material is permitted. The allowances of
Section 16(a).1.P may be used to affix brackets, but these brackets
shall serve no purpose other than engine and drivetrain
mounting (e.g., they may not provide chassis stiffening).
E. Suspension components are unrestricted as long as they use the
original attachment points. Modification of factory pickup points shall be
allowed by elongation or drilling of new holes (e.g. Shelby "drop mod")
For the purposes of this rule, “suspension”
is defined as any item that is designed to move when a wheel
is deflected vertically. This includes shocks/struts, control arms,
steering knuckles, uprights, etc., but not tie rods, steering racks, and
subframes. In addition, shock absorber/strut upper mounts are to be
considered suspension components.
F. Steering modifications are permitted as follows:
1. Steering components, including the steering rack and/or box, tie
rods, idler arms, power assist devices, and related components
may be replaced, added, moved, or removed. Wheel-mounted electrical
switches such as those for the horn, radio, cruise control, or shifter
may be relocated and/or replaced, or eliminated.
2. Rear-steer devices may be replaced with solid links.
3. Supplemental steering gear boxes or steering quickeners are allowed
as long as they are mounted in accordance with Section
16.1.F.1.
4. Steering wheels and associated mounting hardware may be replaced.
This does not permit removal or modification of the steering
column or column-mounted accessories. OE wheel-mounted
electrical switches such as those for the horn, radio, cruise control,
or shifter may be relocated and/or replaced, or eliminated.
G. Subframe connectors are allowed as per Street Prepared Section
15.2.E.
H. Subframe bushings may be replaced with bushings of any material
as long as they fit the original location. Offset bushings may not be
used.
I. Front hoods (engine covers), engine covers, trunk lids and hatches
not containing glass, front fenders, rear fenders not part of chassis
structure (unibody), front & rear facias, and side skirts may be
modified or replaced, and may be attached with removable fasteners.
Associated hardware including latches, hinges, window washer
system, and hood liners may be modified, removed, or replaced.
Main body and frame or unitized structure must be of 1978 or earlier
construction. No aftermarket replacements of body or subframes shall
be allowed. Vehicle VIN must correlate with vehicle make and model.
J. Tires shall be limited to 200 tread wear rating by the manufacturer.
K. Rear passenger seat(s), including restraints and associated hardware
may be removed.
L. Aerodynamic Aids: Wings may be added, removed, or modified. Non-
OE wings may only be attached to the rear deck/hatch area behind
the centerline of the rear axle. The total combined surface area of all
wings shall not exceed 8 square feet as calculated per Section 12.9.
The number of wing elements is limited to 2.
Wings, and any component thereof, may not extend beyond the vehicle
width, as defined by the outermost portion of the vehicle doors,
less mirrors, door handles, rub strips, and trim. In addition, no portion
of the wing or its components may be more than 6” forward of the
rear axle, more than 0” beyond the rear most portion of the bodywork,
or more than 6” above the roofline of the vehicle, regardless of
body style. For convertibles and roadsters, the highest portion of the
windshield frame will be considered the highest portion of the roof.
Reinforcements to the wing mounting area may be used, but may
serve no other purpose. Body panels to which a wing mounts must
remain functional (e.g., trunk lids and rear hatches must open). Wing
endplate surface area is limited to 200 square inches each and limited
to a maximum of 2.
Except for standard parts, wings designed to be adjustable while the
car is in motion must be locked in a single position.
Canards are allowed and may extend a maximum of 6” (152.4mm)
forward of front bodywork/fascia as viewed from above. No portion
of the canard may extend past the widest part of the front bodywork/
fascia as viewed from above. Canard area will be measured in the
same manner as wings using Section 12.10. Canard area may not
exceed 15% of total wing allowance. The sum of canard area and
rear wing area may not exceed the total wing allowance.
M. Front splitters are allowed and shall be installed parallel to the ground
(within ±3° fore to aft) and may extend a maximum of 6” (152.4mm)
from the front bodywork/fascia as viewed from above. Splitters may
not extend rearward past the centerline of the front wheels. No portion
of the splitter may extend beyond the widest part of the front
bumper/fascia as viewed from above.
N. Removable OE hardtops, T-tops, targa tops, sunroofs, moonroofs,
and similar roof-mounted panels may be removed/replaced with alternate
panels provided that the area of interface is limited to the
original perimeter of the t-top, sunroof, etc. or utilizes the OE panel
mount points, and that the contour of any replacement panel surface
does not vary from the contour of the part being replaced by more
than 1” (25.4mm) in any direction. The material used to construct the
alternate panel and the method used to attach it to the interface is
unrestricted. Any actuation mechanism and the associated wiring, if
any, may be removed. Vehicles utilizing alternate (non-OE) hardtops
will be considered as open cars in regard to Section 3.3.1.
O. Radio/Stereo and airbag equipment and/or its component parts, in
cluding wiring, control modules, antennas, amplifiers, speakers and
their enclosures, etc. may be removed provided the part added, removed,
or replaced serves no other purpose. Any visible holes that
result from the removal of equipment must be covered with a cover
of unrestricted material. Covers may be used to mount gauges,
switches, etc.
P. Any minor modification, intended to allow or facilitate any allowed
modification, is permitted as long as it does not provide any intrinsic
performance benefit in and of itself, does not provide a weight reduction
of more than 1 lb, and is not explicitly prohibited elsewhere
within these rules.
This rule is intended to allow minor notching, bending, clearancing,
grinding; the drilling of holes; affixing, relocating, or strengthening of
brackets; removal of small parts, and similar operations performed
in order to facilitate the installation of allowed parts or modifications.
Minor strengthening, without relocation, of original chassis/suspension
pickup points is allowed. Examples include welding washers
restricting control arm mounting bolt movement, local reinforcement
of control arm chassis mounts, etc.
Competitors are strongly cautioned to make the minimum amount of
modification required to affix a given part, and to not make unduly
tortured interpretations of this rule. Modifications to the firewall in
order to allow for increased engine setback, and any modification
that changes the location of a suspension pickup point, are explicitly
forbidden. Plastic under-trays and covers below the vehicle may be
removed or modified as necessary to facilitate other compliant modifications,
but not added or enlarged.
Q. Ballast may be added. Ballast must be a maximum of 50 lbs. per
segment. It must be securely mounted within the bodywork.
R. OE side mirrors may be replaced by aftermarket units, provided they
mount in the same location, perform the same function as the OE
mirrors, and have a reflective surface area greater than 15 sq. in.
S. OE “pop-up” headlights may be replaced with static headlights, provided
the replacement units are intended for automobile use on public
roads as a primary means of illumination, and retain high and low
beams as originally provided by the manufacturer. Minor repositioning
of the headlights is allowed to accommodate the alternate headlight,
but the unit may not be relocated and the repositioning may
servce no other purpose. All associated hardware may be removed,
replaced or modified.
T. Alternate subframes are allowed to facilitate engine mounting only.
Suspension pick-up points on the subframe must retain standard geometry.
Weight of the subframe must be equal or greater than the
standard unit.
16.2 MINIMUM WEIGHTS (TBD)
Classes, displacements, and minimum weights are listed in Appendix
A. For the purpose of determining minimum weights, a mid-engine vehicle
is defined as one having a chassis configuration where the engine
block is not located entirely in front of the driver’s seat and is not far
enough back to be considered a rear-engine vehicle. Adjustments to
minimum weights are shown in Appendix A.