As Shrew mentioned on the 'Car Transport' thread, the torque curve is massively different to what we had on the 8v. On that, it would climb, peak and fall. On this system, with this engine, it hits within 5 lb/ft of it's peak torque at 4500 rpm - then stays there up to the recorded peak at 7200 rpm - remember, only 5 lb/ft more than recorded at 4500 rpm. Clearly the exhaust is contributing heavily to that characteristic so that is really, really helpful! The engine is only 1750 cc and in reality, the Alfa flat four isn't known for it's torque! That has been the main aim of those going out to 2 litre - and goes hand in hand with the steel crank (and new rods to suit!).
The issue with revealing power figures is that different people use different rolling roads - and as everyone knows, they throw up varying results - some accurate, some optimistic! We selected Northampton Motorsport because they have a modern facility - with modern and accurate equipment. They have also had vehicles as diverse as Historic F1 to Ferrari 250 GTO on their rollers - they are not 'high number because thats what the customer wants' merchants. Our aim was to ensure that the engine ran well but safe in terms of mixture and timing - which is what was achieved. The 'ingredients' - engine spec, exhaust, cooling, etc and the careful detailed assembly is what allowed it to produce the power/torque that it did. So, happy with that! As I said, the power increase is substantial over the 8v and the torque curve is very promising - and the peak is marginally higher than the 8v.
Last edited by sputnik; 20-04-12 at 16:43.