86'250r bogging

[sdm111]

My 250r was bogging just before the powerband, started tearing it down and found this. Maybe it's all or at least part of the problem. What do yall think?

[RodKnockRacing]

that would definitely cause it to bog

[dcreel]

Just think, your engine ate the piece that is missing.

[squirrel1182]

I wonder what that little piece will do to your crank bearings n at.

[fabiodriven]

I'd bet it'll be OK. I'm guessing they make reeds out of a material that will hopefully not damage anything internal too much. Now that I think of it, I remember seeing some old machine (can't remember what it was) with steel reeds. Betcha she wouldn't chew those up!

[puggerton03]

i dont think the steel ones would break off like that. at least hopefully not.

[sdm111]

Dropped off the cylinder off at the machine shop today, gonna do a topend rebuild but I'm going to leave the bottom end alone not enough confidence for that. The reeds are made out of a paper thin fiberglass or plastic guess they been in there since new. Hopefully It'll be o.k. I don't really ride them much anyway.

[RIDE-RED 250r]

most likely carbon fiber

[TeamGeek6]

make sure they check flatness of the head and deck, I almos tlost an engine due to a little warping on the deck, coolant leaked into the jug.

The reeds mainly affect idle/low end. Considering the large volume of air the piston moves, and the large crankcase volume, that small piece missing wont make a huge difference.

[RIDE-RED 250r]

make sure they check flatness of the head and deck, I almos tlost an engine due to a little warping on the deck, coolant leaked into the jug.

The reeds mainly affect idle/low end. Considering the large volume of air the piston moves, and the large crankcase volume, that small piece missing wont make a huge difference.

i respectfully disagree, reeds open with each intake pulse, and close when the intake pulse stops, no matter what RPM. they just open a small amount at low RPM when intake volume is low, and open farther as RPM/intake volume increases...broken reed petal=not good all-round.

but absolutely agree on checking for warpage while its apart.......

[3Razors]

The original reeds in the early R's were steel. The changed them to fiber for that reason that if they broke they wouldn't do damage.

[RIDE-RED 250r]

yep, they sure were...still have a set in my box-o-parts! lol! in perfect condition too i might add....