1969 Lotus Super Seven Series 3 Twin Cam
A Lotus Super Seven Twin Cam (chassis SB2153) that began as a Series 2 competition car in 1966 before being professionally rebuilt to full Series 3 specification by Arch Motors, retaining its original chassis plate. Power comes from a 1.6-litre full-race Twin Cam producing approximately 175 bhp, refreshed by Stuart Rolt. The car has a well-documented competition history across UK and European circuits with multiple outright and class victories, most recently winning the Colin Chapman Trophy overall and taking a class win at the 2025 Walter Hayes Trophy.
Ownership
- 2026-02-20Auction saleEstimate £32,000 – £38,000
Competition
- 2025-11-01Walter Hayes Trophy2025 Walter Hayes Trophy Allcomers Race1st in class
Class win in the Allcomers category; race took place in November 2025.
- —Spa-Francorchamps circuit racingMultiple outright and class victories
Competed at Spa-Francorchamps among other European venues with organisations including HSCC, CSCC, 750MC, and as part of the Chapmans Chariots Lotus Seven Birkett Team.
- —Zandvoort circuit racingMultiple outright and class victories
One of several UK and European circuits at which the car accumulated numerous wins.
- —Croix-en-Ternois circuit racingMultiple outright and class victories
Part of a broader European competition campaign with multiple organisations.
- —Colin Chapman TrophyColin Chapman Trophy1st overall
Most recent overall victory in the car's competition career prior to the 2026 sale.
Maintenance & restoration
- 1966Maintenance
Car originally constructed and used as a Series 2 competition vehicle.
Original chassis plate SB2153 dates from this year.
- —Service
SPA FireSense plumbed-in fire suppression system serviced to bring it within current certification.
Described as recently serviced at time of sale.
- —Mechanical
Nitron race suspension fitted, rose-jointed at appropriate points with uprated bushes, providing sorted handling for competition use.
Described as relatively recent at the time of the 2026 sale.
- —Modification
Ford 4-speed gearbox upgraded with Quaife close-ratio straight-cut gears; all iron casings including bellhousing and ancillaries replaced with lightweight alloy equivalents. Competition clutch fitted.
- —Engine rebuildStuart Rolt
Engine refreshed by Stuart Rolt; only approximately 25 minutes of running accumulated since completion.
Tyres also described as near-new with the same single 25-minute session recorded.
- —RestorationArch Motors
Comprehensive professional rebuild to full Series 3 specification by Arch Motors, encompassing a strengthened and powder-coated chassis with FIA roll bar, re-panelling, and fitment of correct Series 3 components including engine, gearbox, rear axle, and instrumentation, while retaining the original Series 2 chassis plate.
Work resulted in the car being re-dated June 1969 and recorded as Series 3 on the V5 document.
- —Engine rebuildCraig Beck
Full-race 1.6-litre Lotus Twin Cam engine originally built to approximately 175 bhp output.
Craig Beck is noted as a respected Lotus engine builder.
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