I am having a problem with the mid range on a Brison 5.8. I have ordered and received a velocity stack from Brison; however the midrange only got worse. The engine is mounted on H9 Sukhoi and the length of the stack actually puts it outside the cowl quite a bit. Also the stack is "bell mouthed" designed. I would like to try one with the angle cut(facing back-wards or down). Does anyone know of someone who makes an angle cut stack big enough to fit the 5.8 carb??
Bolt spacing is 1.25 inches(31.75mm) and throat diam.
is 0.89 inches or (22mm).