May 27 2006, 01:26 PM
QUOTE(soggie @ May 27 2006, 12:28 PM)
Actually I believe much more work goes into the 20v 165 HP engine than just the head. Lightening of various parts within the engine and better quality material used. And not to mention a completely different ECU. I believe that's how they achieved 165HP.
QUOTE(soulfly @ May 27 2006, 12:31 PM)
in general, the head is the main thing which is different. but of course the 20v get better treatment for most of the thing lah, like compression, weight and balancing etc.....
Take a B20B for instance,A stock single cam head it produces around 115-130 bhp, but when a hybrid process such as the B20+B16A head project is being done, a much higher output gain will be achieved.
The head is one of the major components which overall effects the powerband throughoutput of an engine. But on the dark side of the turbo world, modifiying the cylinder head is usually the last thing to do. Thats why in N/A engine that is the first thing to do regardless of stock or oversized displacement.
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