Looking at doing an exhaust build for the grom I just picked up. Got a 2017 and want to bring the pipe back up and wondering if this was blueprinted lengths for bore x stroke x cam grind or if they where recommended by someone?Points for solidworks and not creo or inventor, or *shudders* solidedge.
(for the 2v exhaust)
Showing 28mm dia. Not sure what the flange area or the ID actually is, but meh.
The 4v is 35.5mm dia.
Glad you went with the ~16ga rather than going to a .040". Weight difference is minor, and nearly always, stronger = better.
On the studs vs bolts, yeah. Its steel into aluminum. Id be more concerned with stripping the threads/damaging the head. And i guess cross threading, which couldnt really happen with a stud (unless you removed it or came bad from the factory). As i think about Kohler's small engines, some were studs, some were cap screws. id say 70/30 (guessing), but the cap screws were always bigger, like M10 (again, guessing).
Seeing this makes me want to make my own again... Hmm...