- May 26, 2013
Sorta like a Dremel, but I use Dremel accessories. I used doubled up discs that I ran up against a piece of steel to get the approximate diameter. Then carefully cut into the bowl. I’m honestly not sure if that mod really matters with twin carbs, I was hunting another problem and just tried it to see what would happen. As discussed here before different size needle valves are an option if you think you need more flow. Just read up on installed depth of valve if using Stay-ups.
Thanks for the info Pete. You did a nice job!
From a performance perspective I think it's only noticeable at sustained wide open throttle. When I was setting my float heights last year I noticed the needle jiggling around as the bowl filled, and the petrol was spurting out over the gasket height, so in my mind it must cause the gasket to get wetter then it needs to be. So for me it was purely as a design improvement. I guess even a hole drilled below the top would do the same job.