YX Works engine 140
Hi guys,
An update from here in the US.
I have a new 140 motor its a killer.
Bore 60mm
Stroke 50,8mm
Interspan ignition with 15# advance
4 valve YX head Ported and flowed
Titanium Valves with Beehive valve springs and Titanium retainers
Brilium Valve seats
13 to 1 comp
Wisco piston
6 plate billet clutch.
Webb cam (kitaco)
28mm FCR down draft carb,
Hi flow oil pump.
First run on the dyno 23.5 @ 9,500 24.3 @ 10,500
Cant wait to ride it.
Have got some TM 28mm mikuni flat slides, 6 plate hd clutch kits, R&D
Valve springs with Titanium retainers for 125/140.
Few other go fast parts.
I will post costs when I get back.
Glyn
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