Very funny, I also reckon with washing machines as the decisive unit for engine overweight. Or mothers-in-law.
Just to add to your detailed post, Montegue, which I agree with. As there are very few such 4/4s with a 2-litre engine, a customer can rest assured that a normal Sigma 1.6 4/4 can achieve 140 to 145 hp at a reasonable cost. And there are far more of them. I was particularly surprised by the increase in torque with chip tuning. There is a special reason for this. My 4/4 was on the engine test bench and in the initial measurement you could see that the torque curve was artificially reduced. The graph looked like a hammock. That's why the chip tuning was much more effective than you would normally expect from a naturally aspirated petrol engine. After all the adjustments were made, the torque curve looked as you would expect, a rounding upwards. Even without manifold and metallcat, I would assume that you can get up to 125 bhp. In my case, the chip tuning didn't even utilise every last ounce of potential so that I can continue to fill up with 95 octane with peace of mind. With sports manifold and metal cat approx. 145 hp and 180 Nm.
What would please me much more than even more power would be a shorter rear axle. My point is not that you can find a better harmony with the long gear ratio through more power. No, it's about the shift points on the country road. It's a joy with our vintage 1970 Alfa Giulia or with our son's MX5 NA. The Morgan is far too long, regardless of the power, 155 hm/h in third gear at 6,500 rpm is simply rubbish. As there is no shorter rear axle available for my model and there is also no 6-speed NC gearbox without major modifications (wider gearbox tunnel with new aluminium housing and leather, shortened cardan shaft with new connection, etc.), I am considering whether I should simply have gears 2 (slightly, approx. 5%) and three (slightly more, approx. 12%) shortened in the existing 5-speed Mazda gearbox. Ok, the connection to 4th gear (1:1 therefore not changeable) would be far apart, but doable if you know it. I usually don't need fourth gear on winding country roads anyway.
