Dinan S3-M6 takes the Bmw M6 a step further
Thursday, November 13th, 2008
The first thing that became clear in taking down the Bmw M6 was bore and stroke. “It was just sort of begging for stroke.” It require a bit of bore too. So, Dinan stroked it to 83 mm and bored it to 93 mm.
Boring the V10 from the stock 5.0 liters to 5.7 was tricky, since the cylinder walls were lined with silicon-saturated aluminum alloy. Dinan’s CNC bore equipment were equal to the task.
“The silicon’s impregnated deep enough into the block that you can bore out into the aluminum and still have the silicon. We had actually perfected all this technique on the racing engine.”
The racing motor is the one Dinan placed into the Grand-Am vehicles, one of which won this year at Laguna Seca, near the company’s headquarters in Morgan Hill, California. To contain the extra power and torque, he added his own forged crank and lightweight forged pistons and con rods, balanced and blueprinted the whole thing and dealt with it with corresponding electronics and software. Although the $39,995 ( €32,000 ) price tag is far from cheap, it provided the car with an extra 65 horsepower.
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