Hi forum,

Does anyone know the specs for the BTCC racing 850 5 cylinder engines?

Or better yet, know where I could purchase a set of these camshafts?


Cheers,

good luck..they only made a handfull of those engines and from what i heard at the time they were pretty special.....and its a long time ago....they may have looked like 850's but im willing to bet they were substantially different fro manything that hit the road.... i saw a documentary of the sierra'sthat andy rouse preped fro ford atthe time and they dropped the engine height 6" and layed it over backwards to improve the c of g!

The bill for tha sierra was i nthe region of £250k (circa $500k) at then date prices....pretty damn special!

i did find this...

VOLVO 850 -SPECIFICATION
Chassis:Four door shell stiffened by additional tubular steel roll
cage.
Engine:Highly tuned 2 litre unit:-
Number of cylinders:5
Valves per cylinder:4
Displacement mm:1,999
Stroke mm:73.9
Bore mm:83
Max.output KW/bhp/rpm 205+/280+/8500
Catalytic Converter:Catalytic exhaust emission control and silencer fitted.
First BTCC car to do so before mandatory in 1995.
Transmission:Purpose built racing transmission.Six-speed sequential -
push for low gears,pull for high gears.Interchangeable
ratios.
Suspension:McPherson struts at front.Coilspring over damper -Volvo
Delta link at rear.
Braking system:Brembo calipers and discs.
Cooling:High efficiency aluminium water radiator.Heat exchanger
for engine and transmission oil.
Steering:Modified Volvo rack and pinion.Momo steering wheel.
Wheels and Tyres:Dunlop racing slicks -6 allowed per race,Dunlop wets
and intermediates -16 allowed per event.Mounted on OZ
forged magnesium alloy racing wheels 18"diameter x 8.2"
rim.
Additional Features:Heated windscreen



and this


BODY : four-door saloon, RHD, welded rollcage, TWR front splitter, rearwing to FIA specs

ENGINE : built & tuned by TWR, watercooled, inline, transverse mounted, five cylinder, DOHC, 20 alloy valves, 1.999cc, bore x stroke 83mm x 73.9 mm, alloy block, alloy cyl.head, Zytek Motormanagement, dry-sump unit, race catalytic-converter, Champion sparkplugs, Q8 full-synthetic motoroil

POWER OUTPUT : +290 BHP @ 8.500 RPM

TRANSMISSION : frontwheeldrive, 6-speed Xtrac sequential gearbox, limited slip differential, AP Racing 5.5" triple carbon-fibre clutch

SUSPENSION : TWR McPhersons struts front, Ohlins gasdampers, anti-roll bars, Volvo Delta-link rear, semi-independent trailingarms rear, Falkner coil springs

BRAKING SYSTEM : AP Racing & Brembo, hydraulic assisted dual circuit, ventilated discs 355mm front, ventilated discs 270mm rear, AP 8-piston calipers front, Brembo 2-piston calipers rear, carbon metallic brakepads

WHEELS & TYRES : BBS forged magnesium alloy wheels, 8,20J x 19inch, Michelin (1996) and Dunlop (1995) 215/650 x 19 raceslicks

WEIGHT & MEASURES : total weight 975 kg, wheelbase 2.670mm, length 4.670mm, width 1.760mm, height 1.430mm



man 975kg f0r an 850 it WAS special!

Yup Thanks.


I have found that same info on the web too .... I trolled the web for many nights first before I posted on the forum (I dont like asking dumb questions)

One thing I have not found is even the spec (even approximations) for the camshafts duration and lift!? Even if I could get these it may be enough to go to my camshaft guy and start welding / grinding a set ................


Please, some one out there in Volvo-land must know something!


Cheers.

very much doubt anyone does...the cars were preped by TWR (Tom Walkinshaw Racing) who did the engine work in house and organisations like that tend to keep stuf to themselves (afterall its how they win!) - you could always try emailing them?

I was looking for the proper TWR web-site and / or e-mail address and did not have much identifying what is the TRUE TWR!!?? I even e-mailed the Steff .... people in sweden and they did not have any spec for me ...


This may remain one of lifes unsolved problems ...... 'How do we get over 290HP from a 850 5-cylinder naturally-asspirated.'

TWR Group Ltd
Lyons Way
Worthing
BN14 9LA(Road Map)
West Sussex
Tel: 01993 871210
Internet: www.twr.co.uk

but i gather they may be in recievership (i.e. going bust)