emrickb

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Sea level, about 170 psi and running c12.

Yeah.. didn’t touch anything in the clutch cover between the 2 start and the sound appeared.. Just touched the domes and flywheel came loose at the same time

To see if everything was good during shipping

Yeah, that’s was my next step before splitting case. If a gear would be grinding, i would see metal shaving in oil right? And clutch cover side is all correct, tried new basket, new kicker assembly, another waterpump etc. Think ill opened up the head and check, maybe try again the 19cc and a new stator/flywheel combo

The color and size was not the oring on the pipe. Opened the coolhead and the oring was pinched and missing a part on right side.

So, got the engine. opened the clutch cover before starting it, changed the idler gear and installed it in the frame. did 2-3 start for about 10-15 sec running max. last start, revved it and saw a oring part fly off the pipe so ordered a new oring kit for the domes. At the same time, changed the old 19cc for a brand new set of 21cc that brian sent for free. Started it again and heard this noise but 2x more louder. Checked everything and saw that flywheel was loose. Torqued it back, started and now i have this little sound. All gear work, no metal shaving in oil.

Yeah brian is very fair and service is there. I'm just trying my max before taking it appart or shipping it back since i'm not very friendly with shipping a complete engine. Just weird that before it didnt have this sound..

Yeah brian sent me a set of 21cc with the 19cc in the motor.

He said he had personally run it and tested it. But when i received it, idler gear bushing was bad and the spacer washer and retaining ring was not on the shaft but loose in the clutch cover. But before i opened the coolhead to change the oring, this sound was not there and motor was running great.

What’s weird is that it didn’t do this sound before that i changed the domes. The first start after the dome change, did this sound but the flywheel was loose. Not only when i let off, past a certain rpm i don’t hear it i think. All gear work. More noticeable on neutral and 1-2 gear.

Yeah complete motor. Thought at first it was the idler gear but he sent me a brand new one and still does it.

Bought a 7mil cub 443cc from West Coast Atv, installed the motor in my frame and started it. Was running good, but at first rev a oring rubber parts got out of the exhaust. So took of the coolhead, changed the domes for 21cc 9 degree big bore domes and putted back the coolhead. Started it, noticed that this sound appear at the first start but realized that the flywheel came loose. Lapped it, torqued to spec and blue loctied it. Still the same sound but way less louder. Tried to change the kicker assembly, brand new kicker gear, tried another clutch basket, another waterpump and still does it. Squish is at 0.0045 each side. What could it be?

Looking for a set of Small Bore Inframe Shearer or CPI. Need to ship to Québec, Canada. Thanks!

Hi, During this winter i added a pro design adjustable timing plate and i put +4 on it. I also added a k&n filter in the stock airbox with lid on (no snorkle). My bike also have a small porting, boyesen reeds and DMC 916 exhaust. I remeber when using my bike this winter (about 5 degrees f) it was running great. No bog or backfire. I'm at 1200' altitude (Québec,Canada). I'm currently jetted 300 on main and 25 on pilot. I did a ride today (about 41 F) and the bike was reeving ok but i dont have a big hit when the powerband come.. Should i try to put 290 main? 280? or should i mess with needle? Can't really hold WOT i don't have much space.. It feel like no power in 1-2 gear but rev ok.. Thanks!