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1951 Connaught L3/SR

1951 Connaught L3/SR

1951 Connaught L3/SR

Out of Surry, England Rodney Clark and Mike Oliver produced rather simple looking, but sophisticated road cars that would go on to race formula one and their L3/SR ‘sports racer’ was one of the most developed.

Almost all Connaught’s were based around Lea Francis chassis and engines, but in a radical state of tune. Most used the 1.7 litre engine, with a Connaught dry sump system and other modifications that increased the 70 bhp anywhere from 100 to 140 bhp. Sometimes a mechanical fuel injection system was fitted or quad-Amal 10TT carburetors in a McGuffin box.

Most of the bodies that Connaught made were not much to look at, and three cars known as the L3/SR used an elegant aluminum cycle fender body by Abbots of Farnham.

Our feature car, chassis 7110, was initially shipped to the US and first raced at the 1951 Watkins Glen Grand Prix. It also raced at the 1952 Hayground races at Bridgehampton. Decades later it was found in a state of disrepair and underwent an extensive restoration by the Creative Workshop in Ft. Lauderdale, Florida.


In Detail

submitted by Richard Owen
engine Lea Francis Inline-4 w/Dry Sump Lubrication
position Front Longituidnal
aspiration Natural
valvetrain OHV
fuel feed Twin SU Carurettors
displacement 1767 cc / 107.8 in³
bore 75 mm / 2.95 in
stroke 100 mm / 3.94 in
compression 9.5:1
power 104.4 kw / 140 bhp @ 6000 rpm
specific output 79.23 bhp per litre
redline 6000
body / frame Aluminum on Ash Frame over Lea Francis Steel Chassis
front tires 6.00×16
rear tires 6.00×16
front brakes Drums w/Hyraulic Assist
f brake size mm / in
rear brakes Drums w/Hyraulic Assist
r brake size mm / in
f suspension Wishboned w/Leaf Springs
r suspension De Dion Axle w/Leaf Springs
wheelbase 2515 mm / 99 in
transmission Four Speed Manual
gear ratios :1
top speed ~196.3 kph / 122 mph
designers Rodney Clark, Mike Oliver