Supercoyote
XS400 Enthusiast
I know there's a few of you out there that have done this. I swapped my 360 engine for a 400, and have the mk1 BS34's with the 17.5 pilots that are apparently a pain to get. Just wondering if anyone could share their jetting and to what surface they're doing their float adjustment from? My carbs also have screws plugs instead of drains so the "3mm below body" method won't work for me. It seems I'm running too rich/not rich enough depending how to bike warms up, and want to be sure I'm in the ballpark of jetting. Choke kills the engine unless the pilots are 1/4 turn out, which seems odd to me, but then as it warms up the idles hang like it's too lean.