Wolverine
Member
Still working on my 2001 XP restoration (951 engine), went from D.O.A (sitting in the woods for 11 years) to running (poorly). After some work (see below), got ski to currently hit 50rpm at 5000 rpm. Yes, when new, she topped 64mph and around 7000rpm. So far I've rebuilt the carbs (mikuni), new solas prop, prop housing, wear ring, RAVE valve rebuilds, reed valves in great condition, checked carbon seal and shaft (look good), etc... Each of those updates gained me a few mph, rpm. The piston, rings and cylinder sleeves have scoring, etching and damage. I am having a machine shop hone (and or bore) the sleeves, they 'think' they might be able to go minimum .25mm. I 'read' you can slice .25mm on 951 without altering the RAVE blades. Is this correct? Since I have to widen the sleeves should I go minimum .25mm (with no RAVE blade altering) or would .50 or even 1mm provide me any benefit (speed gain)?
And, planning on removing the oil pump (mix gas/oil manually), and bypassing the RAVE valve solenoid using the 'drill hole in RAVE valve housing method'. Comments?
Lastly, looking for recommendations for the top end purchase (WST pistons or other)?
And, planning on removing the oil pump (mix gas/oil manually), and bypassing the RAVE valve solenoid using the 'drill hole in RAVE valve housing method'. Comments?
Lastly, looking for recommendations for the top end purchase (WST pistons or other)?