AD 427 AD Sportscars Replicas

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AD 427 TECHNICAL IRS TECHNICAL DATA (standard chassis)

Chassis :Hooped ladderframe constructed from 10swg, 3"x2" steel box with comprehensive cross bracing. Additional stiffness provided by three dimensionalised front and rear sections and bonded and riveted body assembly.

Body: Composite reinforced moulded fibreglass construction, with jig bonded internal panels. Bonnet, boot and doors all double skinned.

Components: Jaguar XJ front and rear axle, braking and suspension components with suspension geometry, front anti-roll bar, steering rack and Spax fully adjustable coil over dampers.

Engines and Transmission: Any American with 4/5 speed manual or automatic transmission.

Front Wheels & Tyres: Front - 9" x Ø17" Wheels with 235/45 R17 tyres or (Front - 7½" x Ø15" Wheels with 215/60 R15 tyres).

Rear Wheels & Tyres: Rear - 10" x Ø17" Wheels with 255/45 R17 tyres or (Rear - 8½" x Ø15" Wheels with 235/60 R15 tyres).

Dimensions: 4040mm long, 1745mm wide, 1130mm high, 2280mm wheelbase, +/-1100kg weight ready to drive.

Performance:Chevrolet V8-454 cu.in: 0 to 60 mph 3.9 secs. Top Speed 160 + mph.

DONOR PARTS LIST

FRONT END PARTS - CAN BE TAKEN FROM ANY JAGUAR - XJ6 / XJ12 [Series 2 or 3] from 1975 to '91 - XJS from 1975 to '94

Upper & Lower Wishbones, including Fulcrum Pins, Bushes and Outer Ball JointsStub Axle AssembliesWheel Hub / Flange AssembliesBrake Discs and CalipersSteering Arms

REAR END PARTS - CAN BE TAKEN FROM ANY JAGUAR - XJ6 / XJ12 from 1975 to '91 - XJS from 1975 to late '94 (or to '96 if non-standard brake lines are used to accommodate the outboard discs) Differential Unit Assembly and all Suspension Alignment Shims

Brake Discs and Calipers*

Driveshaft Assemblies (require shortening on exchange)

Lower Wishbones (require shortening on exchange), including Fulcrum Pins,

Bearings and Coil Over Damper Mounting Pins & Spacers

Rear Suspension Upright Assemblies · Wheel Hubs / Flanges

OTHER PARTS (JAGUAR) - CAN BE TAKEN FROM ANY JAGUAR - XJ6 / XJ12 /XJS with the exception of the handbrake lever, see below

Engine - the AD 427 will accept a wide variety of (V8) Chevy

Transmission - where appropriate, any Jaguar XJ manual or automatic transmission can be used

Two Port Remote Brake Fluid Reservoir - an adapter is available for this reservoir from AD to provide an additional take-off port for a clutch master cylinder, where required

Handbrake Lever - fly-off design, can be taken from XJS donor vehicles only

V5 Registration Document - essential to obtain an age related (non-'Q') registration number

OTHER PARTS (NON-JAGUAR) Steering Column - can be taken from any Ford Sierra with a square hazard warning button (Aug '82 to Feb '87). The AD loom has been designed to operate with the column switches supplied with Ford's base model Sierra, however the switch gear from the higher specified Sierra models can be used (incorporating delay-wipe, central horn push, etc) with only minor loom modifications Brake Servo & Master Cylinder - can be taken from any Mk V Ford Escort 1.4 litre (Jul '90 to Dec '94) without ABS

AD427 DE DION TECHNICAL DATA

Layout: Front engine, rear wheel drive.

Chassis: Robust multi-tube 75mm x 50mm x 3mm box-section chassis with comprehensive round-tube triangulation and extensively braced / triangulated backbone section. Chassis includes separate triangulated scuttle-hoop section, structurally laminated into internal body tub and bolted across entire main chassis structure for maximum rigidity. All brackets included for engine, transmission, rear hoop/s, seats, seat belts, door hinges, differential unit, suspension arms & links, steering rack, etc.

Body: Gel-coat finished GRP body, hand-laminated in high-heat distribution resin. All internal panels – passenger compartment tub, boot tub and front inner wheel arches – jig bonded into position, for easy and accurate body / chassis assembly. Double-skinned bonnet, boot and doors. (No GRP work required by the builder.)

Note – Body and chassis are designed to interlock with bonded and riveted faces to form an integrated immensely rigid (rattle & squeak free) structure.

Safety: Crumple zone design. Collapsible steering column (plus intermediate steering shaft offset with two UJs). Main chassis rails extend to full vehicle width for greater driver / passenger protection. Optional ‘Explosafe’ fuel tank. As with DeDion vehicles, the AD 427 is designed to meet the full type approval standards of the UK’s SVA test and German's TUV .

Suspension/Axles:

Front - Camber Compensation & Anti-Roll (CC&AR) front suspension system* using AD upper wishbones, pivot bar assemblies and CC&AR cross-links with Jaguar / Daimler (XJ40) steering knuckles, wheel hub/flange assemblies and lower wishbones. GAZ gas-filled coil-over damper assemblies with full adjustment for height and damping.

* Patented, cross-linked, double wishbone suspension system, which provides maximum tyre-to-road contact and therefore maximum grip, whether cornering, accelerating, braking, or in any combination.

Rear - DAX De Dion rear suspension design using AD axle beam, upper A-frame and lower radius arms with Jaguar / Daimler (XJ40) differential unit, driveshaft assemblies (modified to use CV inner joints), rear hub carriers and wheel hub/flanges. GAZ gas-filled coil-over damper assemblies with full adjustment for height and damping.

Steering: AD rack and pinion steering (3 turns lock to lock) operated by Ford Sierra collapsible safety steering column.

Brakes: Servo-assisted, dual-circuit, 4-wheel disc brake system using AD pedal box and Ford servo & master cylinder (23.8mm diameter). Drum and shoe handbrake, operated by special AD fly-off handbrake lever (drops to horizontal when not in use) – can also be sourced from Jaguar XJS.

Front - Jaguar / Daimler (XJ40) front discs and calipers, vented.

295mm diameter – from 1986 to ’90 (Girling brakes) 291mm diameter – from 1990 to ’94 (ATE brakes)

Rear - Jaguar / Daimler (XJ40) rear discs and calipers, non-vented. Handbrake function provided by centre, drum & shoe section, of each rear disc.

278mm diameter – from 1986 to ’90 (Girling brakes)

294mm diameter – from 1990 to ’94 (ATE brakes)

Wheels: The AD427 De Dion can be fitted with 18” diameter wheels and tyres.

Engines and Transmission :

The AD 427 is designed to accept any commonly available V8 (English or American). The most popular engine choice by far is the small-block Chevrolet V8.

AD SportscarsReplicas will also be happy to undertake the fitting of other suitable units, subject to a modest tooling charge.

Dimensions :

Length - 4030mm (with nudge bars and overriders fitted)

Width - 1755mm

Height - 1110mm (to top of windscreen)

Wheelbase - 2280mm

Typical Performance: - with Chevrolet V8 (Approx. 400bhp)0 to 60 mph: 4.5seconds

Top speed: 160+ mph, depending on gearing

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