K&N pods for 78 CB550k

[sweet_baby_james]

I know, the bike will only run as designed if I use a stock airbox. However, the PO dumped the airbox and rejetted for pods so I figure I'll run with it for the time being.

The old pods are Uni filters but on the 550 they are a little long and hit the frame which annoys me incredibly from and aesthetic stand point. I have looked into the K&N pods and they have cone pod that is 2.25" long (should clear the frame) and a 1.375" ID throat, part RC-0790. Now, the carb throat OD is on my PD46C carbs is 38mm (~1.50"). K&N claim the throats can expand up to 1/16" which wouldn't be quite enough in this case. Has anyone tried these pods on a 550? Does anyone have any other suggestion that would fit?

Thanks

 

[Derwood]

Ok I'm new to this. I don't have the answer to your question, sorry, however I am eager to hear what the answer will be. I also have a '78 CB550K which I am crafting into a CR and I need to know which jets i will need to change and to which specs for the K&N pods.

 

[Bert Jan]

Ok I'm new to this. I don't have the answer to your question, sorry, however I am eager to hear what the answer will be. I also have a '78 CB550K which I am crafting into a CR and I need to know which jets i will need to change and to which specs for the K&N pods.

Way to many variables to tell. Trial and error my friend, trial and error. General rule is 10/15% bigger jets with pods, but dont come to me if it aint workin'. I have a cb550 with a 650 cam and cheap pods. Runs like there's no tomorrow with OEM jets. Carbs are syncronized and engine had a port-job.
I've had enough cb's in my hands to know i'm lucky with this one.

 

[Derwood]

Way to many variables to tell. Trial and error my friend, trial and error. General rule is 10/15% bigger jets with pods, but dont come to me if it aint workin'. I have a cb550 with a 650 cam and cheap pods. Runs like there's no tomorrow with OEM jets. Carbs are syncronized and engine had a port-job.
I've had enough cb's in my hands to know i'm lucky with this one.

I get it. Time to play around with it. My first CB.....ever. But not afraid to figure it out. Just looking to get any experienced knowledge that good people are willing to offer.