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Dirt Bike Discussions By Brand
Honda MX & Off-Road Dirt Bikes
CR125 running like hell even with mods
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[QUOTE="jowoo919, post: 1423750, member: 107888"] I'm calling on those of you who know more than me for guidance! Its a 2003 cr125, 134cc big bore kit from eric gorr Ported for mid to top and pump gas Boyeson Rad Valve FMF Fatty (Small dent in mid section) FMF Shorty 13/53 sprockets Running stock needle, 40 pilot, 400 main right now Now the bike screamed when I got it (stock reeds, stock engine, just the fatty and shorty) would pop up easy in second gear without popping the clutch At some point the performance just disappeared and I didn't readily notice cause i'd been off the bike for a while doing cosmetic mods after i'd taken a fall and got a concussion, I put in vforce reeds and a 51 rear sprocket. I've changed everything around trying to fix these issues, had vforce, went to stock reeds, got boyeson reeds. Froze the fatty pipe to expand the dents a bit. Spent hours and hours changing needles and jets at the track. Finally shipped everything off to eric gorr thinking a big bore would fix whatever the issue was and it didn't. The bike has a power band but I have to abuse the SHI* out of the clutch to get there regularly and then its weak and short when I do get there. I don't know what it could be i'm to the point of wanting the sell the bike. I get on my little brothers yz85s and with a little twist they just scream like hell and I have to hold on to keep the front down, i'd be raping the track if my bike ran like that, and it used to. What could be causing these issues? Plug gap? Power valves not functioning properly? Something with the bottom end of the engine? The small dent in the expansion chamber? My searching has said no to all of these things. Guys! What gives?! [/QUOTE]
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Dirt Bike Discussions By Brand
Honda MX & Off-Road Dirt Bikes
CR125 running like hell even with mods
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