lqs skrev:
ang. det med at det ikke ALTID er det topstykke der flower mest der giver flest heste, prøv at komme med et DUKOMENTERET eksempel hvor dette ikke er tilfældet!
Er dette "bevis" nok?
"It has always been thought that there is a direct relationship between high air-flow numbers and high power output. In principle this theory sounds correct, but in practice it does not always work out that way. At one time a factory racing department picked the best high-performance heads off the production line for modification. After being ported, each head was flow checked. The heads that recorded the best results were kept for the factory racing team, and the supposedly inferior heads were sold to selected privateers. The interesting thing is that on the dyno, the engines with the heads that produced the best air-flow figures actually recorded power outputs no better than engines with average flow heads. After this discovery the factory tested all their heads for power output, before any were released to the private teams, and they found that some of the 'average' heads they had been selling produced the best power."
Det er sakset fra "Four-Stroke Performance Tuning" af A. Graham Bell. Det lyder også til at være den bog havneren snakker om.
mvh Flemming