I did that to my decomp when I built my vespas. I used a short piece of carb overflow tube to connect to the valve and a screw in the other side to connect to the drill since I didn't have the clearance for the drill in the head like you had. Just like that!
@@bjf10doing it by hand is much better than using a drill. The high single direction speed cuts way too much, and leaves circular trenches around the valve and seat. When you do it by hand, you get a smoother and more precise cut.you should never use a drill
I did this to my black bike, took almost 100 degrees off the top. Killer mod because I can crush hills now without worrying. I initially did it just like this, widening the stud holes and I had the decomp welded shut. But now treats just sells the hobbit modded, decomp-free head.
They were sold out of the heads. And I had this spare. Also I like the decomp for easy pedal starts. But welded decomp and pull start is probably the best way to do it
Hyped to hear that it took off so much heat. WOT my hobbits slowly climbs in temp, I’m hoping this will solve for it. I also think my DR kit now has 4000miles on it and it might be on its last leg.
