Originally Posted by kolsen
When I purchased my Mini nearly 2 years ago there was a list of all the options it had that I fell for. I have eliminated about half. Yesterday I put her on the dyno and eliminated one more. She was advertised as 120 hp, not true. She came out with 69 hp at the wheels and 75 ft/lbs of torque. With 15% drive train losses that's about 81 hp. That comes out to about 16:1 power to weight.
I'm still happy with the car. She's a kick to drive, good gas mileage, great at the autox and turns a lot of heads in my small town.
I believe when we meet in Santa Barbara a couple of years ago we concluded we both had similar builds. I was on the dyno 3 weeks ago and pulled almost identical numbers as you; 73 hp/74 tq. If your car's previous owner had quoted you 120 hp, I wouldn't be to hard on him. Some engine builders are indeed quoting 120 hp for our engines. Most likely that's what his builder told him.
My builder wouldn't quote me an HP figure—they just said I'd more more then happy. They were right. Sill, when I see a builder quote 120 hp for an engine with the same head, crank, cam, pistons, rods, lifters, carbs etc. as Rosebud, it makes me wonder. I know every builder has their own little speed tricks, but I can't imagine any trick being worth a 40% increase in power. Nevertheless, a 16:1 power to weight ratio makes for a spirited little car, I'm sure you'd agree.