Old Super B Diagram? Tuning instructions? For Ironhead Project. - The Jockey Journal Board

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Old 06-22-2009, 11:20 PM   #1
Blue Collar Moto
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Default Old Super B Diagram? Tuning instructions? For Ironhead Project.

Ive been looking all over the place! Ive checked the S&S website and cant download the files for some reason. Can anybody fill me in on #s 1-5 and how to start adjusting them to get this thing running? Its on a 70 IH. It was running Ok until I messed with #1. Now its popping, backfiring, and wanting to die on me. It has puked a bit of oil. There have been some red flames out the drag pipes, and the plugs have a black soot on them in a few minutes.

I have checked the rod adjustment. Rewired the bike. Replaced the fuel valve with a new Pingel, emptied the gas tank and re filled with new gas. Today I removed the float bowl. Looked brand new inside. Not at all what I'm used to seeing. No varnish, no bits of rust and crap floating around. But when I flip the throttle I get no gas squirting out. I have also made sure the battery has a full charge and installed a Cycle Electric Genny.

I think Ive figured what most of it is by looking at the newer Super B diagram but would like confirmation. That and I have no clue on where to start adjusting the cool little dinosaur that sticks out too far but I love it anyway.









I'm going to change the fender and make a sissy bar after I can afford a new tire. I'm thinking a K70 would look good.
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Old 06-22-2009, 11:47 PM   #2
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Default Re: Old Super B Diagram? Tuning instructions? For Ironhead Project.

Here you have the pdf from s&s it explains everything you need to know.

http://www.alcatrazmc.se/superb.pdf
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Old 06-22-2009, 11:55 PM   #3
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Default Re: Old Super B Diagram? Tuning instructions? For Ironhead Project.

Thanks Con, but for some reason I cant download the S$S file. Its been pissing me off for a few hours now. That would be too easy.

Anybody have a scan of this info?
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Old 06-23-2009, 12:15 AM   #4
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Default Re: Old Super B Diagram? Tuning instructions? For Ironhead Project.

That #1 is the Idle adj screw.(Mixture)
If You screw it inward You are leaning the mixture, I would try unscrewing the Idle screw 1 or 2 turns to richen the mixture, & see if that helps.

Your description sounds exactly like a lean condition. (popping sound)
well except for that part about the oily plugs, It's possible the jetting
is rich on the intermediate and or main circuits. Is it dying when you give it
lots of throttle or just cracking it?

I would try adjusting low speed 1ST & get it idling descent, then
pay attention to 1/4 to 1/2 throttle.

and double check timing!

Last edited by lairdog; 06-23-2009 at 01:10 AM.
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Old 06-23-2009, 12:29 AM   #5
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Default Re: Old Super B Diagram? Tuning instructions? For Ironhead Project.

#4 is an aftermarket thunderjet that effects full throttle
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Old 06-23-2009, 12:49 AM   #6
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Default Re: Old Super B Diagram? Tuning instructions? For Ironhead Project.

Quote:
Originally Posted by lairdog View Post
Your description sounds exactly like a lean condition. (popping sound)
well except for that part about the oily plugs
Thanks! The plugs are a dry black soot with just a bit of oil coming out the carb. Sometimes gives a cough of black smoke. I have an idea but don't want to lead the second opinions. Anybody have a diagram?
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Old 06-23-2009, 01:06 AM   #7
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Default Re: Old Super B Diagram? Tuning instructions? For Ironhead Project.

Your choke is on, and you dont have a acell pump so no squirt, the #1 is air bleed, not Idel..................Roach.
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Old 06-23-2009, 01:19 AM   #8
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Default Re: Old Super B Diagram? Tuning instructions? For Ironhead Project.

#1 is also considered an idle mixture screw since it only affects low speed/idle
circuit. Shit I'm out of here, I'm good with S&S E & G carbs but not the B,
I forgot about the lack of accellerator pump. & what the hell is #5?
Good Luck.
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Old 06-23-2009, 02:34 AM   #9
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Default Re: Old Super B Diagram? Tuning instructions? For Ironhead Project.

your #5 is the flote bowl pivit pin, You will have to down load "adobe acrobat" to use the pdf, and the jet on the side off the carb is for one of the air fule circets, cant remember wich at the moment and dosnt show in the pdf, but turn off your chock/enrichiner and see what happens, thunder jets are a waste of time for the street and mask the problems, dosnt fix improper tunning.............Roach.
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Old 06-23-2009, 02:43 AM   #10
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Smile Re: Old Super B Diagram? Tuning instructions? For Ironhead Project.

Quote:
Originally Posted by Destralo Roach View Post
Your choke is on, and you don't have a acell pump so no squirt, the #1 is air bleed, not Idel..................Roach.
Thanks Roach. I have a pump ready to go next week. I wasn't sure if it was a vacuum deal or not without it. First bike w/o one. I figured the Idle speed screw is # 2 with the spring wrapped around it. I wasn't sure about #1, even after looking at the new shorty super B pic. The Enrichment has never been on for more than a moment after firing the engine up. I figure it may be the intermediary causing the problem?

What other info I have after a phone call tonight is that putting your hand over the filter for the first few kicks will help wet the carb (w/o pump) and make it easier to start. Helps the vacuum bring the gas to where it needs to be.

Still interested in a diagram and tuning settings. Please.
I just want to rip down the highway on this thing more than what's good for me at the moment. Know what I mean? It would be nice to get on the Triumph this week after getting this running correct.

So far Ive only spent $35.00 on this build. I'll need a new battery, powder, and paint for the finished product but have been doing good so far with what I have on hand. LB Swap meet special.
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Old 06-23-2009, 04:03 AM   #11
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Default Re: Old Super B Diagram? Tuning instructions? For Ironhead Project.

Hey Chris, I got the PDF and the exploded GIF pic off of S&S site, PM me with an email addy if you still need them. I can send as an attachment. Oh yeah, good luck with that dino-carb!
See you sunday.

Dee
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Old 06-23-2009, 08:04 AM   #12
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Default Re: Old Super B Diagram? Tuning instructions? For Ironhead Project.

PM me if you want, I can email you a .pdf copy of the S&S and Thunderjet manual (can't attach to this thread: too large apparently).
  1. Idle Mixture screw (S&S recommends 1.25-1.75 turns out from lightly seated)
  2. looks like you are pointing at the throttle shaft w/ spring on it; if so, there’s nothing to adjust there
  3. looks like you are pointing to the adjustable air bleed: that’s a mod someone did later by tapping into the existing passages with a main jet. It will effect when the main jet come into range (if I recall, a larger air bleed means the main will come in later). Shouldn’t play much into starting.
  4. Thunderjet: another modification. Under that alum cap should be a mikuni type jet. This will pull at rpms above like 4000 or so (but don’t quote me on that). Shouldn’t affect starting really.
  5. looks like you are pointing to the screw/pin that holds the float.
If you are wondering about tuning, I’d start by:
·plugging the Thunderjet (a little solder in the jet is fine and can be removed later)
·go to a 40 on the Air bleed.
·Then follow the guidelines for jetting and idle mixture adjustment in the S&S manual.
·Also check for play b/t the throttle shaft and housing of the carb (becomes a source of air), as well as the usual intake leaks

My $.02 (take it for what its worth) on the Thunderjet instructions is that they recommend jetting way high: I assume this is b/c it’s intended for race applications (but w/ the jetting they recommend turning the idle mixture way down to compensate, so………..). My 96” shovel has a 32 int, 80 main, 55 air bleed, 100 t-jet. I doubt I ever really make use of the Thunderjet but it came on the carb. And, I have the aftermarket accelerator pump, and although the design isn’t all that sweet, it hasn’t had a problem and it’s made life better in my opinion.
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Old 06-23-2009, 01:36 PM   #13
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Default Re: Old Super B Diagram? Tuning instructions? For Ironhead Project.

Thanks everybody!
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Old 01-12-2013, 10:20 AM   #14
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Default Re: Old Super B Diagram? Tuning instructions? For Ironhead Project.

i know this is an old post but in case no one mentioned it, you better make sure your points are adjusted at .020 as per o e m specification... this will cause same problem...
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Old 01-12-2013, 10:45 AM   #15
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Default Re: Old Super B Diagram? Tuning instructions? For Ironhead Project.

If Blue Collar Moto ever comes back (almost a year now) I'm sure he'll appreciate the input.

Now, read this:

http://www.jockeyjournal.com/forum/s...ad.php?t=57757
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Old 01-12-2013, 02:46 PM   #16
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Default Re: Old Super B Diagram? Tuning instructions? For Ironhead Project.

[QUOTE= thunder jets are a waste of time for the street and mask the problems, dosnt fix improper tunning.............Roach.[/QUOTE]

I know this is an old post, but since it's been brought back. I have to disagree. On a well tuned bike, it's like getting rear ended by a freight train. Maybe I'm exaggerating, put it will give alot more pull under wide open throttle. I've got one on a sporty that's dual plugged, extensive headwork, blah blah blah. Other than making a mountain motor out of it, about everything that could be done to it was. The last thing was the thunderjet and I was impressed with it. It's takes a while to install, mostly measuring for the location for the thunderjet and tune. Imo, if you're looking for that last bit of hp left in your motor it's worth it. I do agree with you that most guys don't bother reading the S&S tuning manual, so they're not getting the most out of their carb to begin with.
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Old 01-12-2013, 08:40 PM   #17
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Default Re: Old Super B Diagram? Tuning instructions? For Ironhead Project.

http://www.sscycle.com/carbquickguide/

You should consider canning that Air Cleaner, they do not allow enough air for that carb in addition to clogging real fast
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