New 20 ounce tumblers available now! Forum donation credit with purchase. https://www.wildguzzi.com/Products/products.htm#Tumbler
provide approximately 10% torque increase throughout the rev range, at the expense of only 1 horsepower from the peak figure.
Just seen the interview with Bill finnegan about tuning old round barrel heads. Iam interested to find out more about his idea of 'tumble porting', he describes it as raising the floor of the inlet tract by 6-7mm to create a D shape inlet port. Would really like to find out more about this and if anyone has tried doing it or has any clues to how it could be done? Or, is there an outside chance that someone knows how to contact Bill finnegan so I can send my heads to him for tuning? https://wildguzzi.com/forum/index.php?topic=92106.msg1454781#msg1454781
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