Reply To: Jetting a GT125R – 2017 ..?
Mods:
K&N-airfilter
BlackWidow exhaust & manifolds (largest round can with “dB-killer”)
EGR-delete
Honda Rectifier/regulator
520 chain/gears, with 13/46-tooth. (GT250=14/46)
NGK plug-booths & upgrade coils
Jetting:
Float-level (carb upside-down): 7-7,5mm
Front: 95 Rear: 97,5 (Proper jets from 6SigmaJet-kit) Pilot: 15 (stock). Needles at upper level/clip at lower.
AFR was very stable at WOT , within 12,5-13,5 from ~4500-11000rpm
I had hoped to find another pony or two, but the butt-dyno thinks it may be less than one…hard to say without a dyno-test as bone stock…
I also need to find a better silencer, acceptable under 6k, but gets LOUD at speed.
Old and grumpy,(?), have fairly wide engine & tuning experience, "restoring/resto-mod" on cars & mc, worked as electronic tech. (retired).
GT125R - sold. New (used): 2012-GT250R-efi (sold)+ 2017-GV-125C (sold) - got my old 2018-GT-125R back... 🙂