engine sucking air somewhere

Energy One

BadBrad

2005 Pitbull
SVen, have you ever actually turned a wrench on a Big Dog before? All bikes are not created equal. Over 7000+ members on this site and you're the first to ever mention the use of a manometer. Some of our members worked at BDM building the bikes. Others are professional machinists specializing in motorcycles. Wake up! Smell the roses. Go take a look at a Big Dog up close and personnal. You sound like you have experience working on bikes, but not on Big Dogs.
 

Bowhunter

Well-Known Member
Like Matt said, I have the Motion Pro and use it to sync multi-carb bikes, I still do not see an application on a single carb bike.
 

Sven

Well-Known Member
dude we only have one carb!!! useing a manometer is useless!!!!

try a 33int take it out run it while your out check your main jet as well
Guys. gals, I'm bringing in backup to backup what I say. If you know about a multi-cylinder engine, it takes very little to move the low screw, correct? So, my theory is, if we have such a minute move on the air screw, it still says "1 cylinder moved to balance to the others."

Back to weeding out all other cylinders, think theory. So, did not the one tiny increment move? That move said balance, you ying this side to the left or yang the screw to the right.

Stand on your tiptoe. 1 leg up. Did you find the balance? Yes or no? Same sort of theory if that was a close enough analogy about getting a little more balance into it.

And again, blending is transition from from linear to a slight stumble <[you eliminate] happening at throttle opening to WOT = Not a stumble, pop, but bent valves no loss of fuel or spark = OOPS! Lost a gaymigo! :D
 

BadBrad

2005 Pitbull
I would like to recant my remark about you Sven. You don't sound like you know shit about motorcycles. You sound like you're on dope or dog food, but definitely not from this world. How in the hell can anyone make sense of your last remark to try and repair their bike?

Sorry to get so far off course trying to help. If you confirm that your intake is not leaking, sounds like you need to increase your intermediate jet. I'm not a certified mechanic, so take it for what it's worth.
 

Sven

Well-Known Member
SVen, have you ever actually turned a wrench on a Big Dog before?
No. Why do you think I'm trying to learn it via the net. Have you ever actually tuned a CBX, if you want to go tuning a bike to idle? No clutch rattle happening like its sister CB750 being notorious for it? Same old problem with a new bike having that clutch basket inside the case. Just sync it away. :2thumbs:


All bikes are not created equal.
I'll have to disagree with that. Is it a 4-stroke? Does it have a carb? Points? Electronic with a VOES? Or FI? Sounds like the same old parts says they hold the same theories. Just place the parts in different locations.

Over 7000+ members on this site and you're the first to ever mention the use of a manometer. Some of our members worked at BDM building the bikes. Others are professional machinists specializing in motorcycles. Wake up! Smell the roses. Go take a look at a Big Dog up close and personnal. You sound like you have experience working on bikes, but not on Big Dogs.
I wish there was a BD around so I could 360° that baby. I especially want to see the paint jobs. Stunning layouts. I've been to BD's site. Billet here and billet there. Me likes. Especially American made. :flag:

BadBrad? Be honest. Do you own a manometer; Yes or no? Lets get that out of the way on your next post. :cheers: I'm not here to argue. This is the tech section right? I come with HA special tools. My bikes are not watt you think either. As you can imagine reading my type.
 
Guys. gals, I'm bringing in backup to backup what I say. If you know about a multi-cylinder engine, it takes very little to move the low screw, correct? So, my theory is, if we have such a minute move on the air screw, it still says "1 cylinder moved to balance to the others."

Back to weeding out all other cylinders, think theory. So, did not the one tiny increment move? That move said balance, you ying this side to the left or yang the screw to the right.

Stand on your tiptoe. 1 leg up. Did you find the balance? Yes or no? Same sort of theory if that was a close enough analogy about getting a little more balance into it.

And again, blending is transition from from linear to a slight stumble <[you eliminate] happening at throttle opening to WOT = Not a stumble, pop, but bent valves no loss of fuel or spark = OOPS! Lost a gaymigo! :D
Sven......You need to back off the RedBull's brother :D
 

Sven

Well-Known Member
I'm not a certified mechanic, so take it for what it's worth.
Some say I'm certified all right. Here is the deal. This is the net. We have little to go by. I've heard so much not mentioned until the next variable comes up and you are 3 pages in until the OP goes, "Oh I did this too' 'I forgot to mention this."

So, here we are waiting for someone that has a man0 is to man up and plug it in, see if the bike idles better or is close enough?

Dude! I mess with my air screws so much, I had to Meguyveerig a hand assist screw setup. So I could 1/4 ~ 1/2 ~ Full turn the air screws. I'd hook up an AFR, then study the meter's changed output. I would be putting the spins in action. Hey, has to work for a single too.

 

Sven

Well-Known Member
Sven......You need to back off the RedBull's brother :D
The funny thing is... I don't drink/take drugs/feed the cartels... PERIOD! Bring that dixie cup forward... Someone here has to take a leak... that is 7,000 membeers, start piss'inn! Gov wants to know where the money is going so they have to keep printing it! GET IT!
 

DRBarnhart

Insert title here...
I watched the How to for the Syncpro and it never mentions that this instrument is to be used to detect a vacuum leak. It only states that this instrument is to be used to Sync vacuum on motorcycles with multiple carbs. If you hook it up to a single carb, how do you know that the vacuum is not correct? Does the S&S Super G always have the same vacuum even after making modifications to the motor to increase compression?
When you have an engine with multiple carbs the cheapest way to make sure they're balanced is with a manometer. The only way a manometer would be tell you if you have a leak in a single carb engine is if you already knew what the vacuum should be. Other than that it could be used to fine tune the carb. Bottom line, in this instance it would be worthless!!!
From what Dennis said, if there is no vacuum leak and the idle mixture screw is more than 1 3/4 turns out, you need to increase your intermediate jet. Sounds pretty straight and simple.
What I read is that Brenden has "been battling this issue after I completed a bunch of new mods to my 08' 117." (I didn't see anywhere that he mentions what those mods are?) He's already tried spraying around the intakes and found no leaks. So, it sounds to me that he just needs to dial in the carb... K.I.S.S.!

Dennis
 

Sven

Well-Known Member
He's already tried spraying around the intakes and found no leaks. So, it sounds to me that he just needs to dial in the carb... K.I.S.S.!

Dennis
Agreed.

Now that the air is out of the way, this screw is fuel assist. The plugs are black. 1 3/4 out is a lot of fuel. Meanwhile, you'll be cooking that bike with your ear. I'll man0 the screw within seconds I'm done. Man0 and mother nature are a visual tune.

Ear tuners are fine with me. I like my man0 way. A little out of the box for some. Most think there is more air in an engine too, especially if you put a pipe on and port it and stuff. I find those around all over. Because they are stuck without knowing the penultimate number. You know that number? How about you, Brad? Guys in the shop? 7,000 others?

Disheer weeds out the lamb skins. Those whom wear the 4X sheep skins, those that throw most of the pack away because none fit the bill. :D
 

DRBarnhart

Insert title here...
1 3/4 out is a lot of fuel.
Kind of. If it's running good at that setting it just means the intermediate jet is too small.
Meanwhile, you'll be cooking that bike with your ear.
Not for the length of time it'll take you to determine your next step.
I'll man0 the screw within seconds I'm done. Man0 and mother nature are a visual tune.
What's the manometer going to tell you that turning the screw and listening won't? Nothing... unless your deaf.
I like my man0 way. A little out of the box for some.
Not "out of the box" at all! You'll find reference to them in every tuneup procedure written about multi-carb setups.
Most think there is more air in an engine too, especially if you put a pipe on and port it and stuff.
An engine sucks what it needs. Guess I don't quite get what you're saying here.
Because they are stuck without knowing the penultimate number.
The penultimate number of what?

Dennis
 

Sven

Well-Known Member
Kind of. If it's running good at that setting it just means the intermediate jet is too small.
Agreed.

Again, the steps are:
1. intake boots cleared.
2. What is the screw setting now?
3. We are on the 3rd page and still waiting to hear about the screw in or out or is the wallet out for an intermediate jet upgrade?

What's the manometer going to tell you that turning the screw and listening won't? Nothing... unless your deaf.Not "out of the box" at all! You'll find reference to them in every tuneup procedure written about multi-carb setups.
Out of the box means, apply it to a single.

An engine sucks what it needs.
No. An engine closes on the penultimate. Not what it needs. It needs no more, and takes no less.

Guess I don't quite get what you're saying here.The penultimate number of what?
Of the close of the intake valve.

There are the more air guys.
There are the same air guys ~ Who begin to see the fallacy of the more air guystumbling.

Did I??:

Create more air if I port the head? More air entered the cylinder, right?
How about if I said: The same air entered the cylinder, only quicker. YOu moved the penultimate into the chamber faster. It still filled the same number. Don't bring in the ambient and humidity.

I am saying the number is going to be 14.7 psi on the close. For ever action, do you agree, there will be an equal and opposite number if that 14.7 is the first action? So, to be unconfused about that number, you need to bring in another normally aspirated number than the penultimate number I propose.

So, I have a different number coming from you [if] you do not agree. For example. What is the penultimate number in the exhaust header with the engine off? Still with the engine off, what number does FI read as its penultimate number on the vacuum sensor, we turn key on only? Those are a lot of numbers you need to bring in of you do not agree with every one of the numbers I brought in at different points of places.

See the theory yet?
Brad has yet to say he does, or does not own a manometer? I'll assume he does not. I don't know why you're getting on my case? I'm presenting fact after fact you cannot dispute. Yes or no?
 

DRBarnhart

Insert title here...
Out of the box means, apply it to a single.
But as I said, that's not "out of the box" thinking... it just isn't necessary. :down:
An engine closes on the penultimate....
What is the penultimate number in the exhaust header...
... what number does FI read as its penultimate number on the vacuum sensor...
I think you're a little stuck on the word "penultimate". Dictionarys are a great resource!! :2thumbs:

I don't know why you're getting on my case? I'm presenting fact after fact you cannot dispute. Yes or no?
If you're talking to me I absolutely dispute your "facts"!!! I'm not here to get on your case or teach you 4-stroke engine theory, I'm here to try and help Brenden (the original poster... remember him?) get his bike running right. If you care to discuss engine theory any further I suggest you start another thread of your own. :cheers:

Dennis

PS 14.7 is the stoich mixture, not penultimate.

PPS My post previous to this one is my penultimate post concerning you. :hi:
 

BadBrad

2005 Pitbull
No Sven, I don't own a manometer. I can adjust my carb just fine without it. It's like taking sand to the beach. It just doesn't make good sense. Why would I need one when I can tune my carb just fine without it? My dog is running great but thanks for your concern. Your method of tuning a carb is probably ideal for multi-carb bikes but there are very few that have opted to purchase duel carb set ups for their Big Dogs. Most are running with a single S&S Super E or G carb. Why make something so simple into something so technical? I don't know if what you're talking about are facts or fiction but up until now, I've never seen reason for their use on mine or my wife's Big Dogs. That's right! Rocky, aka Fred, has her own Big Dog Mastiff. So, what are you currently riding?
 

Sven

Well-Known Member
But as I said, that's not "out of the box" thinking... it just isn't necessary. :down:I think you're a little stuck on the word "penultimate". Dictionarys are a great resource!! :2thumbs:
No, I pen the ultimate number. There is no other number. It is called, the basics.

If you're talking to me I absolutely dispute your "facts"!!!
I knew you would. When the facts are laid out, you still are in denial? Come on. What is the air pressure outside, before you enter the shooting range? Atmospheric. What is the vacuum on the door, you pull it open? Suck if I know? What is the air pressure when you are inside before you open the other door? Sort of got the picture? We are in a vacuum but can't feel it? I mean, our environment? Are you disputing atmospheric pressure, yes or no? I just showed you where they are sitting in the exhaust with the key off. And now you need to make mine a fallacy, yours fact. I told you, it is absolute science is that air screw.

I'm not here to get on your case or teach you 4-stroke engine theory, I'm here to try and help Brenden (the original poster... remember him?) get his bike running right.
Whooo, hold on here. Did I explain? We are on page 3 waiting for conformation how many turns out, someone wants to pull his wallet out. Believe it or not, I only enter threads I know about. If I knew it all, I'd answer, but like you said, I really do not know that much. But WOT I know, I'm trying to help, believe it or not.


If you care to discuss engine theory any further I suggest you start another thread of your own. :cheers:

Dennis
Hey, I'm trying to solve a step here in old carb theory. I really do not need to start any threads. I'm not the one with any problems. If someone else would like to, I might partake in a few posts. :2thumbs:

PS 14.7 is the stoich mixture, not penultimate.
Correct. If we lived under a vacuum maybe, but I pen the ultimate number that is constant in, constant out. The eyes can watch it go to zero and action for every reaction is the ultimate number.

PPS My post previous to this one is my penultimate post concerning you. :hi:[/QUOTE] Do not alter my syllables. Dishere is dabstracthat make sense.

Or the bike does not run, yes or no? I mean, my 3gaymigos are; Mr. Fuel, Mr. Spark, Ms. Compression... :eek: Look a those jugs!
 

Sven

Well-Known Member
No Sven, I don't own a manometer.
No biggie. Most won't man up, so that's a biggie in my book.

I can adjust my carb just fine without it.
Like I said, don't show up to a burnout war, or we swap same bike she for yourself.

It's like taking sand to the beach.
No, it's like taking candy from a baby. Old chinese proverb; 'no investigation, no right to speak.' We speak low speed adjust, we sync or swim.

It just doesn't make good sense.
There is this thing called, 'idle lean drop' that goes way back. If you do not look at the engine as one cylinder, the OP is going to not know what it's all about with that screw. "Why would I need one when I can tune my carb just fine without it?" Because this is a chopper? Small tank? Increase mileage? Hello? How much is sand oil a barrel?

My dog is running great but thanks for your concern.
I'm not concerned about your bike. Y*ours is fine. My method of tuning a carb is ideal for one-carb-Period.

Most are running with a single S&S Super E or G carb. Why make something so simple into something so technical? I don't know if what you're talking about are facts or fiction but up until now, I've never seen reason for their use on mine or my wife's Big Dogs. That's right! Rocky, aka Fred, has her own Big Dog Mastiff. So, what are you currently riding?
Technical? Well, for one thing, the man0 can detect an off compression between each other. If you do not have a smooth bounce but unstable? Kind of shows the heath of the engine, no? And a compression test would tell that, no?

So WOThe OP should have done very first thing? WOTizz COMPRESSION????? Tizz very simple not to chase your tail when the bike has low compression and won't have enough compression to fire all the fuel. I've penned the ultimate question to the OP... Screw the screw turn. Might as well use that as the pin to tell the tail on the donkeyhotea,

Someone back me up? Is this not the very first variable to eliminate? It's not fuel or spark...

What do I currently ride? A kawi and an aprilia. All I am doing is tuning the bike and seeing if the air screws will perform as per. Keep an eye out for the lines. If you want precision tuning... You want to hit your line or you're dead meat and greet your smoothatrick! No apex was harmed in dishere video. When a few cars make a move, l still clean the apex LOL! You meet a lot of dickheads on the road... Ever Meatheadick?

[ame=http://www.youtube.com/watch?v=eQUyLcFalr4]Sea Low - YouTube[/ame]
 
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BadBrad

2005 Pitbull
Kinda odd that someone with a piece of Jap crap wants to come on Bigdogbiker and tell all the members how similar the 2 bikes are and how all calibrations between the 2 are in sync as one. You make no sense to me and I'm sure there are others that wonder what the hell you're talking about. Go back to your Jap crap forum and I'm sure you'll impress the shit out of them, but personally, you don't do a damn thing for me. You talk of shit no one uses for these bikes, but you say it's not only the best, but the only way to do it right. You're so damn arrogant!!!! Come down a thousand. Put your hands on a Big Dog and ride a Big Dog you'll know the only similarity between the two is they both have 2 wheels. Do you do anything by the book? As in, as the manufacturere states the way things should be done? If so, read up on S&S Super G and you won't find reference to a manometer to perform any tuning issues. If you would just try listening for a change and not always have your own alternative method, you may actually learn something here. You may not believe this, but there are some folks in this forum a hell of a lot smarter than you, and several have already to replied to your comments.
 
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