Here is an interesting case study in rebuilding a tired VW sandrail engine back to its original specification and then tuning it on the dyno for maximum power. When disassembled, the VW engine had the cases beat up by the stock non counter-weighted crank. The crank was replaced with a Scat C/W crank. The cases were rebuilt by Rimco and all new bearings, gaskets, etc. were used. The 94-mm pistons and cylinders were renewed and the trashed heads rebuilt back to stock. During the dyno tuning the carburetor venturis were reduced to 32-mm from 34-mm and the jetting changed appropriately. The result was just what the owner wanted: a broad torque curve with decent top-end power. This engine wasn't designed as an all-out horsepower monster, but rather a reliable and torquey engine to power the family sandrail.
Power after: 97.1-hp @ 4,900, 111.9 lb/ft @ 4,000
Power before: 76.8-hp @ 4,600, 102.8 lb/ft @ 3,500
Type: VW Type 1 1914-cc sandrail engine
Bore: 94-mm
Stroke: 69-mm
Compression Ratio: 8:1
Cylinder heads: Stock VW dual port
Camshafts: Elgin W100
Induction: Twin Dellorto 2-barrel carburetors
Exhaust: 4-1
Ignition: Bosch 009 distributor/coil
