I have pretty much finished up with installation and initial tuning of the S&S Super E carburetor.  It’s a true 40mm conventional carburetor and not nearly as sophisticated as the stock 35.5 mm constant velocity Mikuni.  But I like to be different, and I also am a big fan of WOT performance.  After flow testing carburetors it was obvious to me that the S&S had the potential to beat the socks off the stocker at WOT performance.  It didn’t disappoint me.
 
The S&S dropped the second-gear 4K to 7K time by .17 seconds.  I’m very satisfied with that.  It wouldn’t surprise me if there’s more in it.  It’s very rich right now and I suspect I might be able to improve the acceleration a bit if I go down a couple of sizes on the main jet.

It’s a thirty-year-old carburetor.  Here’s a shot of the installation.  I think it looks pretty good.

This link will take you to a YouTube vid of initial operation in my garage.

https://youtu.be/rl1_LF7ujeI

If you're wondering about the fun factor, this link takes you to a vid of running through the gears and granny shiftin.  As you can see, it's a fun scoot to play on.

https://youtu.be/LKgN6kqoLZA

Some steady state cruizin.

https://youtu.be/J591VU3lYBs

It runs pretty good but still has a couple of hiccups.  At very low throttle openings between 3 and 4 thousand rpm it tends to go way rich, to the point of stumbling.  Open the throttle and the stumble goes away completely.  The idle is also a bit rough.  Other than that, it runs very well for a first attempt.
 
When I first installed the carb, I had it set up with a 28 Intermediate Jet (IJ), a 62 Main jet (MJ), and a 100 Air Bleed (AB).  It’s an old carb that was previously modified for a ThunderJet, so it has an adjustable AB (utilizes Mikuni MJ for AB).  That didn’t run well at all.  It had a terrible stumble any time you tried to accelerate, but at WOT it ran fine.  It looked like the IJ and MJ had too much overlap so I started increasing the AB.  It immediately got better and continued to improve as I kept throwing in larger ABs.  When I got up to about a 150 it stopped improving.  I’m thinkin I need a new hole or two in the emulsion tube.  Anybody out there know anything about emulsion tube mods?

I think I can clean up the rough idle by drilling a small hole in the throttle plate (an old hot rodder trick used on engines with low idle vacuum).  Right now, I think the throttle plate is open too much and overlaps the transfer ports at idle.
 
Things are lookin up.

Sorry for not placing multiple hyperlinks in one post, I just couldn't get it to stick.

Kamelryttarn, thanks for the kudos.

The insulator is made from a phenolic material.  S&S makes them in two thicknesses, 1/4" and 3/8".  S&S part numbers 16-0491 & 16-0497.

The small meter to the right of the tachometer is an oil pressure gage, 0-15 psi, liquid filled.  I have it tapped in to the head cover.  It is a Marshall part number LB00015.  You can view the details of the install here.

http://suzukisavage.com/cgi-bin/YaBB.pl?num=1559853083