I have an OS 70 Surpass and am also looking to putting a Velocity Stack on it.
W8YE described the extension below the carburetor it measures .470 in diameter and is .175 tall.
Does any one have the inside diameter of the Saito velocity stack, or the carburetor extension OD of the Saito.
If the Saito is the same or just a little bigger like .475 the Saito will go on the OS 70 Surpass.
The picture of the Bru Line filter is attached to a Saito, so I'm wondering how much of a difference in diameter is there?
I looked at the Bru-Line site and I think the small end of the rubber filter housing was 3/8, thats .100 smaller than the OS extension.
The rubber may stretch that much, but I don't know.
If anyone can measure there Saito 72, or 82 carb extension and post it, that would be much appreciated.