Larry's Shee

Please share some details with the class. Is thug racing a "real" shop name?

Boy, you've left yourself open for a lot of comebacks, lol. Either buy a Clymers Repair Manual or find the download on here. Could be bad kill or key switch. Have you even checked for broken wires in harness? Did this run and stop? Or is it new to you POS ? BTW, welcome to BHQ. Grow some thick skin, you're going to need it, lol.

Rule #2,don't apologize unless necessary. Swap plug wires? Will indicate bad plug cap. Using Banshee flywheel puller (no jaws) check flywheel and Stator poles for rust. Clean timing nubs on Fwheel .Set pickup gap @ .018 (IIRC) Sand nub if one exceptionaly high. Tripple check carbs. Especially mainjet/emulsion tube side holes. Buy Clymers Repair Manual !!!!! Report back. Search/ read "One cyl missfire" threads for more ideas.

In addition to the seal, they can leak between the keyway and crank. Short of it developing a leak between case halves, Now, as to your time spent............... Don't give up your daytime job. First thing you learn around here is grow thick skin.

Are they genuine Mikuni jets? Have you done a plug chop/read? What temps/elevation? If a person has lack of experience in jetting it's safer to go richer first.

Wish this caveman could copy/ paste on this tablet..,..... I'd post results of a Google search on YFZ 450 arms on Banshee. 50% admit it doesn't work, rest are to dumb to admit it. I searched this while back. Sucks you have import issues in your country. Wish we did .......... FYI, there is a Banshee forum based in SA, they don't like us Yanks, and won't let us join

Where to start ,..........

Rattle Can Ray would only give ya $500 if you were lucky Must be perfect, except the engine??

And how long before terrorists use some kind of RC vehicle ??? Other than they won't be getting any Virgin Camels or goats

What exactly does a collapsed skirt look like?

Have you figured out why that piston shit the bed?

Clutch set-up? What gear you starting in? Are you wound out in whatever gear when you cross the line?

Stroke measure same on both cylinders?

Got a dollar says leaking boost bottle.

Always accelerate, problem solved.

Leakdown is similar, but different, lol Basically plug intake and ex, pressurize to 6/7 psi, must (should) hold for 7 min. Tho you may have adjusted floats correctly, you make it sound like you reffed the shit out of float tang. With 1.5 mm range and thin brass tang, no room for gorrilas here.

Really should do a leak test after assembly and before startup. Pulling choke told you that you are lean, but you didn't listen.

I think Gravel ment AFR not oil ratio. Have you done a plug chop or plug reading?

So you somehow got it running without even cleaning the carbs. I know this because a sharp fucker would have noted the jetting specs. White smoke indicates need for leak down test.

Sounds like he didn't put the specialized poer bands in (correctly ) As Elvis youst to sing " Return To Sender"

Must have had more done than a rebuild if it needs jetting. Do a leak test? What carb? It clean, float set? What does the plug chop/read look like?

Guys blow $1,000 cranks. Especially if it's a stock crank, not worth the $$$ and effort. It'll give ya something to do this winter.

I will be a dick. I'll forgot the other thousand for the rest of the build. Mild build you'll be fine. You'll know when it twists, lol. Presume fresh bore? I say forged. The advantages out weigh the disadvantages.

Any dyno numbers? What kind of head? How much I save if pick up, in Lapeer. 4 mil long rod?

Stir the pot. 28:1 here, mild mods, oil is cheap, parts aren't. JMHO, your results may, and will vary. And IDGAF. Stick with B8.