No problem, this 101aa should be an average example of a sdc20 101 swap all stock ports and only .004 over with the puck muffler. I am sure there are better runners out there but it’s a solid saw. It runs fine with the sdc20, and has excellent manners, once you get them dialed in they are super easy to start, idle great and cut good, no starving for fuel, good all around saw. But it’s also held back from its true kart potential. These wb37/v4 swaps help get a little closer, but max effort kart motors with v12 intakes and cone pipes are making even more. A bet a bcc v4 kart intake would be an improvement over the wb in hp.
It all depends on what you want? How much cutting up you want to do and the manner you would like? It’s not a must to do a bigger carb, but it dose make them funnier, but the manners are lacking, no choke means it needs a prime to start cold, not a big deal for a fun saw, and will fire first pull when you learn the amount, so not horrible. The v4 reeds and wb seem to want to load up at idle or like to be a little higher idle than the stock clutch likes, it works but is on the edge. If the clutch would engage a little higher, I could keep it super clean, as of now it need to be cleaned out a bit or it will eventually load up and stall. Not for everyone, and I might figure more out in time, the cp is still fresh and not dialed in at all. I really really want a wb2 off a homelte 650, with that I could get the choke on there, and maybe better manners. Idk still learning!
I can say that the wb3 v4 setup on the ported 101d, is on another level compared to the sdc20
Feel free to ask questions, I know the other guys can add to this as well!
