[brickwhite]

does this engine with keihin fcr carburetors sound right, seems to have a little whine to it?

https://www.youtube.com/watch?v=vpbmD01tfuE&feature=player_embedded

 

[470four]

Are you using the standard airbox top & snorkels?

 

[brickwhite]

I am Looking to buy it, not sure on the airbox, but it does have Ferracci 92MM 11:1 Piston Kit and lightened flywheel, and California Cycleworks Dyna Coils.

 

[Joe-B]

My track bike has the same pistons and carbs with a cut airbox lid and it doesn't sound like that. No whine. Coils and flywheel wouldn't affect the sound. On the other hand, it's hard to tell listening on a computer. Could the cam belts be too tight? Easy to check.

 

[pajazo]

The engine in the video has a whine that is changing pitch with rpm but not throttle position. The flatslides have a certain whine that you can hear when opening the throttle but not at idle. That whine on the video is something else, possibly from the belts? I think the 900ss is not supposed to sound like that. I wouldn't buy the bike unless the cause of the whine is found.

 

[Sofa King]

The engine in the video has a whine that is changing pitch with rpm but not throttle position. The flatslides have a certain whine that you can hear when opening the throttle but not at idle. That whine on the video is something else, possibly from the belts? I think the 900ss is not supposed to sound like that. I wouldn't buy the bike unless the cause of the whine is found.

I suspect it's the belts, and probably a frozen tensioner bearing, if I just were to take a guess. But that definitely isn't carb noise. That almost sounds like a gear whine, but being so high pitched, I'm going to guess the timing belts.