Subject: 190hp engine? (Re: Fall Tour & DeLoreans Magazine) --- In dmcnews@xxxx, "James LaLonde" <deloreandmcxii@xxxx> wrote: ... > Houston has added 60 horsepower the car. ... Though it may be true that the DMCH improved engine produces 197hp at the flywheel, as they claim, this doesn't necessarily mean that it's 67hp more powerful than the 130hp stock engine. Unfortunately it's not that simple. At the risk of sounding like a commercial for DMCH, I have no doubt at all that their engine is better, on account of its less restrictive exhaust, different camshaft, and whatever else they've done. The comparison to the stock engine may be apples and oranges, though. It's unrealistic to compare horsepower ratings that don't specify the conditions under which horsepower was measured. The DeLorean stock engine horsepower was specified 130 net, which by Society of Automotive Engineers (SAE) definition means that the measurement was taken with all normally attached accessories, like alternator, AC compressor, and waterpump installed. Unless the DMCH figures were taken under the same circumstances, it's not possible to intelligently compare the numbers. For real horsepower information, we are indebted to Bob Brandys, who performed a very sensible dynamometer test of DeLorean horsepower on a bunch of actual real life cars, which is the only truly believable way to test horsepower. The results are at: http://www.dmcnews.com/Resource/horsepower.html For a stock DeLorean with 5speed, the power at the wheels was 96hp. (Apparently, 34hp was lost to friction in the drivetrain and tires) Until someone publishes a dynamometer run of a car with an enhanced DMCH engine that produces 145.44 (197/130*96hp-at-wheels)or more horsepower at the wheels, we'll never know how the DMCH engine really compares to stock. It seems reasonable to interpret DMCH's horsepower rating of 197hp as more of a "gross" power rating, than a "net" powerrating. I'm very interested in the actual difference between the stock and the DMCH engine. Rick Gendreau VIN 11472, 535hp