1985 H-D XLH Sportster 1000cc

Engine/transmission

Type Air-cooled OHV 45° V-twin Capacity 998cc Bore x stroke 81 x 96.8mm Compression ratio 8.8:1 Ignition Electronic Valve size 1.95in inlet, 1.75in exhaust Valve clearance Just free when cold Valve timing Set by timing marks at TDC Carburation 38mm Keihin

Spark timing 35° before TDC (fully advanced) Primary drive Triplex chain Clutch Wet multiplate Gearbox Four-speed Lubrication Dry sump (3.4 litres) Final drive Chain Weight 172lb (78kg) Power output 61bhp at 6,000rpm

Thanks to Matt Neal at Matt’s Machine Shop (01443 742791) for providing an engine, space for photography and technical information. Thanks also to the Fives Cafe in Abercynon (01443 742533) for providing refreshments.