IrideA250R

get an axle, it will closer match the width of your front end.

you can tell the piston crown temps were very high due to the oil burned onto the underside of the piston. Rebuild it, ditch those 7 heat range plugs for some 8's or 9's, and run a nice 32:1 mixture. It wouldn't hurt to leakdown test the motor when you have it all back together too.

Trinity is gay, they have built crap for as long as I can remember.

stick with dual carbs then.

7's are too hot of a plug, I would run 8's. It's possible you damaged the piston when you sucked in the water. Hot piston + cold water = cracked intake skirt. It then let go when your buddy was riding it and locked the thing up.

I wouldn't ride the bike with the frame like that, where it bent the steel is fatigued and could possibly break, sending you to the hospital. Then the $300 for a new frame will seem real cheap.

yea, fixed when you buy a new frame.

yes, this is how most modern snowmobiles have reverse. The engine briefly shuts off, the computer changes the timing, and restarts in reverse. This is why I said to replace the CDI (if this guy is actually serious)

replace the CDI.

40's sound too rich of a pilot for the stock carbs. Have you synced the carbs?

they've been doing this for years.

its from the clutch.

good for you. I think people look totally ridiculous when they smoke, and the fact that you're paying a corporation to take poisonous weeds, roll them up in a piece of paper, and them light them on fire laughable. I was unfortunate enough growing up and watched 2 close family members die of complications from smoking. 1 from emphysema, one from lung cancer. It had such a negative impact on me I vowed to never touch one, and I never have.

generally a plug backing out and falling out is caused by detonation from too much compression/timing advance and not enough fuel octane.

yes. I have a YFZ front end on mine and the Banshee ends work fine.

time to trench some cases?

look at it this way, you can either send it to someone who knows what they are doing and pay for the porting now, or after you screw it up you can send it to someone who knows what they are doing + pay for new cylinders. Your choice, don't do it yourself!

do you plan on correctly jetting the bike?

ok, you did a couple of things wrong here. First, you have to measure the pistons on the skirts front to rear. They will wear and clearance will increase. You subtract the piston size from the bore size (in thousandths of an inch) to get your piston to cyl wall clearance. .004 is about normal. Second off, you didn't hone your cylinders. Anytime you put new rings (or new pistons and rings) into a cylinder, you MUST break the glaze on the cylinder wall by honing the cylinder, otherwise the new rings will not break in correctly. Third, you did not check your ring end gap. Use a piston and push the rings into the bore, and use a feeler gauge to measure the gap. This is your ring end gap. Did you by chance put the carb slides in backwards? Did you check for air leaks by spraying carb cleaner around the intakes and listen for a change in engine rpm?

I wish they'd sell the clips separate. They are a bitch to take off, and you often end up bending them to get them off, then if you reuse them, they don't sit inside and under the hubs correctly, which could cause the issue described above.

floats are either set too high, or stuck open.

pull the plugs and have a look. If it burbles and breaks up you sound rich. If the power flattens out or it seems like you're running out of gas, you're probably lean.

my gripe about the search is...ALLOW 3 LETTER WORDS! there are probably thousands of searches that go along the lines of 'piston pin' 'yfz a-arm' etc that are not allowed because of the search not allowing 3 letter words. it sucks!

10mm stock cylinder motor done by Patriot or another knowledgeable shop. CPI in frames 35 or 38mm PWK's with clamp ons beefy ass clutch to hold the power, probably a lockup 55 watt headlights, one spot, one flood +2+1 a arms with a nice shock setup, Fox Floats, PEP, Axis etc +4 axle with a matching rear shock +6 to +8 swingarm Skat Trak mohawk 22 inch fronts Skat Trak Haulers in the rear, whatever size fits your taste