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Bob KellyIII · January 4th, 2022, 01:41 PM

Marshall...
that's just a plug for the machining process they use to make the carb body
.... drills don't go around corners as you know, so they just drill another hole that intersects that hole and then plug the very start of the hole ...that is actually a short pin that is pressed into the hole.....
as you can imagen that corner is a great place to trap dirt and junk in the fuel
so getting the corner clean is a priority !
all passage ways are as straight a shot as they can make them but that usually means several "Kinks" in the passage way where the drill bits had to stop and another hole was drilled that intersected it.... then the end of the hole was plugged by a short pin....
....life would be much easier if they used grub screws in those holes so you could clean the passage ways but the speed in manufacturing demands quick and dirty solutions ! ...
Bob........

January 4th, 2022, 01:41 PM	#91
Bob KellyIII Retired motorcycle Mc. Name: Robert Location: Weed, California. Join Date: Jul 2021 Motorcycle(s): 2012 Kawasaki Ninja 250R, 2021 CSC TT250, 1977 Triumph Bonneville 750cc,2001 Honda XR650L. Posts: A lot.	Marshall... that's just a plug for the machining process they use to make the carb body .... drills don't go around corners as you know, so they just drill another hole that intersects that hole and then plug the very start of the hole ...that is actually a short pin that is pressed into the hole..... as you can imagen that corner is a great place to trap dirt and junk in the fuel so getting the corner clean is a priority ! all passage ways are as straight a shot as they can make them but that usually means several "Kinks" in the passage way where the drill bits had to stop and another hole was drilled that intersected it.... then the end of the hole was plugged by a short pin.... ....life would be much easier if they used grub screws in those holes so you could clean the passage ways but the speed in manufacturing demands quick and dirty solutions ! ... Bob........ __________________________________________________ Its too late when you've gone too far !