I bought my brothers CBR 900RR 1998 for $1000 (20k miles). The bike has sat in a Garage from 2003 to now. The cycle starts but does not rev above 4000 rpm and occational blue flames come out the pipe. I was taking the carbs off for cleaning and found a modificed air filter setup in the airbox. Does anyone know from the picture if this is a standard modification to get less rpm?


Thanks

I wondering if I paid too much for the cycle



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That seems about right. It will increase low end by allowing more fuel less air in, should still rev past 4 grand though. I have a similar air box mod, only I used pistacios and it will rev well past the redline now before floating valves. I would try bungee chording the lid down a little more see if that gets you much. Other wise the price seems great. That mod alone should run you $1300.

 

WTF?! Looks like someone or something was storing stuff away for the winter. LOL.

 

Your right the nest was not the only problem. Two spark plug sockets are stripped. The cycle is only running on two compressing cylinders. I guess this is why I got a deal and the thing has sat for 4 years from 2003.

I got them resocketd for $64 parts and labor. ( I removed the Cylinder head and took it to the dealership)

 

Wow, you actually bought it like that. I figured you were messing around and just took a pic to be funny. Im sorry, if i'd have known I would have been more serious in my post. Good luck.

 

Wait, what?!?!
You seriously found that after you purchased the bike?
How does it run w/o the nutz and striped plug holes???
I've never seen/heard anything like that!

 

Happens to me every winter. Mice seem to love crawling up the insides of my lawnmowers, snowblower, leaf-vac, mini-van and anything else they can get to. That is, however, the worst case of home-steading I've ever seen.

Of course, leaving it that way will let you get a quick snack in case the munchies hit you in the middle of nowhere

 

Well no quick snacks. They ate every last nut and just left shells. I have the engine back together. I had the dealership adust the valves. Now the the spark plug sockets are replaced, carbs cleaned and ballanced , vavles adusted and Cylinder head /Valves cleaned of carbon. I'm about $100 over budget with the new tires. I have lots of cleaning to before I get all the parts back on. At least the frame is clean now.

 

It seems elbow grease, carb cleaner and some engine brite are about all the tricks I could find to clean up the enigine outside. I prefer painted black engines, they are easier to clean.


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Interesting frame, very lite compared to my ZX1100. I think my Mountain bike weighs more.

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