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  Current Articles 09.09.10   
 
David Worrell's Rotary Spitfire
<by Editor>
  A blast from the past - a 10A Rotary powered Spitfire raced in Australia in the 70s [more]
 
Randy H. Lamp's GT6+ Racer
<by Editor>
  Randy's 1969 GT6 vintage race car [more]
 
Roger's GT6 Mk 3 Racer
<by Roger Lange>
  Roger in South Australia races this magic GT6 Mk 3 [more]
 
Update on Ray Brown's GT6 Racer
<by Editor>
  An update on the repairs [more]
 
Ray Brown's GT6 Mk1 Racer
<by Editor>
  Fellow Aussie Ray has a slightly bent GT6 Mk1 racer with some interesting mods [more]
 
Gareth Thomas updates Tuning Manual
<by Editor>
  Soon to be available again [more]
 
GT6 PI
<by Geoff>
  Progress picks from my GT6 rebuild and conversion to 2.5PI engine [more]
 
Gone racing
<by Editor>
  Well, I finally stopped being a Gunner and done it - I went racing on the weekend. [more]

 
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GT6.COM - Triumph GT6 EZine GT6 Cutaway
 
  Roger's GT6 Mk 3 Racer by Roger Lange 04 Nov 2009  
 
The orange GT6 racer #44 is a 1975 model and originated from the USA. A high number of GT6 production cars went to export markets, and the USA has proven to be a good hunting ground for relatively rust free original cars ready for restoration – or in this case, to be transferred into a purpose built race car. There is not a lot of the original design left apart from the body shape. The interior has been completely stripped out, and anything deemed uneccessary or too heavy has been removed or lightened. The bonnet is fibreglass and all window glass replaced with perspex. An alloy roll cage and lightweight racing seat completes the interior.

Whilst the 2.0 litre engine and four speed gearbox have been retained, there is little that remains standard component wise. In standard form, the GT6 engine produced around 95 bhp – this race engine, with triple 45 weber carbs, high lift cam, roller rockers and other lightweight internal parts, plus custom design headers, now produces some 210 bhp at 7,250 rpm, with the ability to spin to 8,000 rpm readily and safely. The engine has been moved back in the chassis for better weight distribution, and the four speed gearbox uses close ratios to deliver power to a TR6 differential with a detroit locker centre. Different final drive ratios are available to suit short or long circuits.

The front suspension has been modified for better handling characteristics, particularly corner "turn in" and to reduce front end dive under hard braking. The rear suspension has been totally replaced with a custom design "coil over" double wishbone arrangement. Drive is delivered through upgraded shafts, Volkswagon CV's, and greatly strenghtened hubs. Front brakes comprise BMW ventilated discs with lightweight AP closed back 4-spot calipers. Rear brakes are standard drums but with race spec linings and ventilation holes. 13" x 8" Wheels are locally made Performance "Super Light" design, and for most outings at the track, slick tyres are used – currently Avon.

With a total weight of just 675kgs, the overall power to weight ratio means great performance and a lot of fun!

[Editors Note: I've had the pleasure of watching Roger's GT6 race at Wakefield Park - it is a great bit of kit and Roger is a great bloke. More details and photos of Roger's car and his fellow TSOA SA members can be found at TSOA SA.]



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