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I wouldn't mind a long rod kit from F1, but that can wait till a full rebuild.
If you really want more power, just do the big bore. Once you start doing strokers or long rods etc. It can start getting complicated getting them to run properly
What jetting was best on the dyno? Would you be able to post the chart?
The Shop
Does it make any difference??
We are on the fatty with shorty and the V4 on our 2018 tc125 and a few holes in the airbox. On vp T2 ready mixed oxy fuel at 40.1 we went leaner on the pilot and least on the needle... northern cali summers. On the main, I actually went up one size I think.
The bike runs amazingly crisp and clean, I've rode it and my only complaint is that it looses a little overrev compared to other bikes (rm144 with mega top end porting).
I've heard similar reports about the kehin carb, but right now the bike runs so clean I've got no reason to start messing around. Kids these days dont know how lucky they are.
V force did nothing for power but we run it for reliability.
Squish gap on ours is 1.3mm, I might narrow it slightly on the next top end.
There are many people that buy into the MXA BS that a 58mm piston 144 engine wont rev it makes me laugh. The ktm 150sx makes more power than the Japanese 250f, we have a 2005 ktm copy rm144 and it runs like an old motogp 125!
Pit Row
Bruce372: we ran the squish at 1.15-1.20mm and the piston was barely below the deck at TDC (around 0.05mm or .0025". We didn't have an SXS head to try so I can't comment on that. The single ring piston only gained a little peak but made the power a tad narrower. We were surprised.
edit- I see it is a Vito Power Jet Kit, I may give this a shot.
I like the ease at adjusting this...I can just reach under like I'm turning the choke while riding,,,make a adjustment,,and gas it again and feel the change,,,and repeat till I feel the ideal top end. I'm not running through all the gears either,,,just 1st/2nd is enough to know.
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