Last summer I was asked by a young friend to add a rotating brush to his Walnut harvester. It worked OK on the concrete, but half loaded on an up hill slope, the 1,000cc four cylinder diesel engine runs out of grunt.
Initially I thought I could solve the problem if I could find a more powerful engine until I realised that changing the engine is fraught with difficulty as it incorporates a centrifugal clutch and rotates anti clockwise.
If it were petrol I could probably sort out some pistons and bore it out, but it isn't, and although there is enough space for a supercharger, there is no room for a right angle drive to connect it.
The engine only revs to about 3,000RPM, and I presume that I'd need something smaller than an MG Turbo, so I'd be grateful for all suggestions.