1979 Yamaha XS 1100 Eleven Special

[woahblackbetty]

Jul 13, 2013 0:08:46 GMT -6 weekendrider said:

Doesn't the lip of the pod boot on those cover the air hole on the carb bell?

Not quite, I've checked a couple of times and the lip doesn't sit all the way down onto the face of the bell.

Well, I finally had some time this weekend to play around with things. On spec I ripped the filters & boots off entirely and that quickly ID'd the problem.
Here's the mount with the aforementioned lip


Here's with it mounted. What you can't see is that there's over 1/4" of clearance internally from the face of the throat out to the lip. I didn't think it would effect things but I was wrong.


Uh-Oh...


This was my simple "half beer" solution for the interim. Probably going to upgrade to some of that fancy Aluminum screen.

[woahblackbetty]

Debating whether to just build some velocity stacks or if I go a different route. Certainly a completely different animal when she's running right!!

[Phillip-S]

Jul 29, 2013 10:05:28 GMT -6 woahblackbetty said:

Debating whether to just build some velocity stacks or if I go a different route. Certainly a completely different animal when she's running right!!

How is this even a question?? Velocity stacks! Anodized bright red! And nothing but WOT from this day forward.

[brad]

[weekendrider]

According to the carb guru's I've read the CV carb doesn't like turbulence.
Even with stacks it isn't a "still" environment.
The Uni PK-92 is a recommended remedy if you want pods instead of the air boxes.

[woahblackbetty]

Hacking together some seating changes... First prototype to get my bends figured out and I'm planning on recreating this, just a little bit cleaner and using some heavier material