TWR Ultima GTR

TWR Ultima GTR

This is the first Ultima ‘GTR’ (T81GJF) as seen on www.ultimasports.co.uk and on the GTR sales brochure. The car was factory built by Ultima Sports Ltd in 1999, used as a prototype for the new GTR model range, tested at MIRA and featured as the factory GTR demonstrator.

The car also featured in EVO magazine Le Mans trip (March 2000) and was tested by Tiff Needell on BBC’s Top Gear click GTR TV!

I've only very recently purchased this car (early Apr'07) and drove it home circa 300 miles directly after buying it (probably the longest single journey it’s ever had other than the Le Mans trip with only 7,600mls on the clock). Even though I took it easy (honest), it is fantastic to drive! I’m still finding my way around it with a few minor jobs to do. Would love to have built one, but business and family commitments prevented that, so went for one already built, with some very interesting history.

Currently running a 6.7ltr full race/dry sump spec SB Chevy, de-tuned via slightly milder cam to just 487bhp (on dyno) for reliability and drivability now with a smooth/wide power band.

Plan is to run the car in Sprints (if allowed) and obviously a few track days whilst enjoying the odd run out on the road in the meantime!

Specifications:

Chassis:

Body:

Rear Wing:

Interior:

Lighting:

Screen:

Suspension:

Steering:

Brakes:

Engine (de-tuned) Spec:

Gearbox:

Clutch:

Fuel System:

Exhaust:

Wheels:

Tyres:

Extras:

Full spaceframe using mainly 38mm x 1.5mm dia tube MIG welded. Panelled in 1.5mm NS5 alloy sheet.

GRP finished in blue metallic gel coat and front splitter.

Double element track design in Carbon Fibre.

Ultima leather seats, 5 point harnesses and white instruments.

Adjustable Traction Control (currently not in use).

Ultima triple headlight system.

Laminated glass, full USA/Euro certified.

TIG welded double unequal length wishbones with Nylatron joints.

LM25 Alloy big bearing uprights.

Fully adjustable coil spring dampers.

Front and rear Anti-Roll bars (for the track).

Alloy sports rack and pinion 2.4 turns lock to lock.

Alcon 12.7” curved vane vented disc brakes all round with four pot callipers and mechanical handbrake.

Adjustable brake bias front to rear.

All stainless steel TUV hoses.

6700CC (409ci) SBC Bowtie 400 block - 4.165” bore.

All steel Eagle Crank/Rods - 3.75” stroke.

JE Forged Pistons.

ARP Studs throughout.

CompCams 242/248 Roller Cam (replaced 260/269)

Dart 65cc Alloy Cylinder Heads (built/ported by Peter Knight Race Engines).

Alloy Roller Rockers (Valve Lash – 17 thou hot).

Rocker Stud Girdle Bracing Kit.

Dry Sump system with Oil Cooler.

Chuck Nyutton built 750CFM Holley.

K&N Bin Lid Air Filter.

Ignition Timing – a very safe 34 BTDC (MSD Ignition).

Power - 487bhp @ 5800rpm & 487lb/ft torque @ 4900rpm (on dyno).

Porsche G50/50 five speed transaxle.

Heavy duty race spec.

Twin 7.5 Gallon foam filled fuel tanks, twin electric pumps.

Race 1 7/8” x 28” ceramic coated manifolds with race silencers.

Ultima 9” x 18” front, 13.5” x 18” rear alloy three piece with five stud centres machined from billet alloy.

Pirelli P Zero’s 235/35/ZR18 front, 335/30ZR18 rear.

Factory Air Conditioning.