Let us see if we can resolve the Flat Spot using the ZX11 carb set up!

[KWICK]

KWICK, I just measured my "Stock Carbs" with a Steel Vernier Caliper with No dial gauge and mine read 36.1 MM at the Outlet!

Yes, but look inside, there is a machined lip that's 35mm. Remember, a carb is only as big as it's smallest measurement.

[Purgeraptor]

But selling the 1224 I don’t understand..??
What will be instead in the garage..?
1109 and?

I have a '99 R1, my original Rex 1109 and am trading the 1224 (with cash my way of course) for a 2001 Triumph Sprint ST 955 for touring.
I also sold my Z650, so just got the three, very different bikes now

[Hawk1]

Sold your Z650 Purge....!
I wish I never had sold mine,
but I have Z1000A2 instead..!

But the Sprint will be just fine.
They are pricey up here...

[Vincent Hill]

I did some measuring last night and found several interesting things.

I have a set of 36 MM Square slide Taper bored AMA Legal 32 MM Ei Blue Magnum Carbs. The "Only" place they are 32 MM is right "AFTER" the slide. I measured a set of Mikuni's and found that the Bore was Oval 20MM left to right and 24 MM Top to Bottom and 22MM after the Throttle Plates.

I measured the Keihin's can found the space where thney were 35MM Left to right but could not measure top to bottom because un like smooth Bores there is no cylinder to measure when the slide is all of the way up!

SO I am going to say that the Business End of the Carb is the true measurement because no matter how they Mix the fuel and Air, it comes down to how large the opening is when everything exits the Carb or at least right at the Throttle plate.

Speaking of Small Bikes, they have changed the Handicap rule in DC so I will start riding my wife's 250 Ninja and when bike parking gets bad, I will buy another Moped (Tomos was my last one) to ride down town amd chain it to a meter!

[KWICK]

The ZX11 carbs are 40mm at the same spot, so are they 41's?

[Vincent Hill]

The ZX11 carbs are 40mm at the same spot, so are they 41's?

Only if they are 41 MM at the "Business End" / Throttle Plate of the Carb. I think you said that they are 40 MM everywhere so how could they be 41 MM. I will know when I get mine and measure them out.

[Vincent Hill]

Today I got the ZX11 Carbs. They have the Factory Needles & Jetting. I see around 200 size Main Jets for people with 1200's. Stock Jetting for the 1200 looks close to the 1100. Since I need the air correction block from DJ should I get the Mains (200, 190 & 180) there also??

[Vincent Hill]

I now have "Both" Style Airbox Connectors (ZX9 and ZX11D) I now know that the ZX9 connector is better not only because the bell stacks are hard plastic but "Mostly" Because the ENTIRE Bell mouth is covered and sealed. The "D" stack will allow unfiltered air to be used for the Rubber Diaphram for the Lift Slide AND the Pilot Jet Air (and the Air Correction jet if it was being used).

This is Extremely important because in 1983 at the Daytona 200 I spent all week chasing a jetting problem that finally turned out to be a piece of Sand Blocking the Air Correction jet in 1 carb.

Thanks "Purge" for finding this other set up! I am still waiting for the DJ Jets and the Air Filters that are still on Back order.

[KWICK]

Without using an airbox, you are building a completely different setup than my Mo'Flo! This thread is not a simple rejecting of my carbset. I will change the title of this thread.

[skandix]

Without using an airbox, you are building a completely different setup than my Mo'Flo! This thread is not a simple rejecting of my carbset. I will change the title of this thread.

Totally agree with the title change.

Vince great find on the housing connector. I never had the zx11 housing so I never knew there was a difference. And of course made my own aluminum air box using a Pontiac TA K&N filter. With these carbs, you will know when they are setup right. The only issue I have is a lean spot, so this spring I will use 40 or 42 pilots.

[Vincent Hill]

Without using an airbox, you are building a completely different setup than my Mo'Flo! This thread is not a simple rejecting of my carbset. I will change the title of this thread.

Since it is "Either" Pods or Airbox with ZX11 Carbs I altered it. As you know you and several others using the Mo Flo Carb Set up DID have this exact problem which turns out to be mostly Fuel Service Level and NOT the Brock / Hindle Exhaust system.

[KWICK]

Since it is "Either" Pods or Airbox with ZX11 Carbs I altered it. As you know you and several others using the Mo Flo Carb Set up DID have this exact problem which turns out to be mostly Fuel Service Level and NOT the Brock / Hindle Exhaust system.

My setup uses the airbox, and works well with every exhaust I have tried other than the Brocks.

Using pods and a different jet kit and air correctors is a completely different ball game.

What you are doing has no correlation at all to my setup.

Again, my setup does not use pods

[Vincent Hill]

My setup uses the airbox, and works well with every exhaust I have tried other than the Brocks.

Using pods and a different jet kit and air correctors is a completely different ball game.

What you are doing has no correlation at all to my setup.

Again, my setup does not use pods

Peeky Power in the UK, HAS your exact Set up from you and had this exact same problem of being Rich between 2,000 to 4,000 RPMS just like you did AND the people with Pods. IN November 2010 he posted his Chart showing that he was also running 10 to 1 A/F between 2 to 4K Rpms. If Changing the Fuel Service level makes it no longer the KWICK Mo Flo set up because the Carbs are not "EXACTLY" as they left your door then anyone changing a needle setting, Main Jet or Pilot Jet Could also be considered no longer having the "KWICK Mo FLo" set up.

Remember I offered to take your carbs at my expense and run your set up on my bike and "Dyno" tune them and send them back to you at NO Cost to you since you no longer had access to a DYNO. Your reply was exactly as above that since it worked on most pipes that it was not the Carb setting (Which you also did not want to change) but totally the Fault of the Brock Hindle Exhaust.

Around 68 Brock Hindle exhaust systems have been sold to ZRX Owners and somewhere between 6 to 8 have had this 2 to 4,000 flat spot. Of them, about 4 to 6 had ZX11 Carbs and I personally know that 2 were using the KWICK Mo FLo Set up and I think there may have been 1 or 2 more. This system stuffs the Cylinder so well that it makes the bike run rich and the FUel Service level simply needs to be lowered.

None of this was fully understood until I finally got a Dyno Chart that showed Exactly how Rich (10 to 1 A/F) this condition was using ZX11 Carbs. SO along with the Stock Carb, ZX11 Carbs with Pods AND the ZX11 Carbs with the KWICK Mo FLo Set up (Airbox), This problem is finally being Aired and excellent / easy solutions are being found. You and Peeky Power were the FIrst to bring this to my attention but you could not show graphically what was wrong until Kajun. I did not know exactly how to tune this out until I posted it here and people replied that it was the Fuel Service Level. I would think that you of all people would be happy that now amyone with a Brock Hindle Exhaust will now have nothing to fear IF they buy your MoFLo ZX11 Set up??

[KWICK]

Vince,
You do know we also had the same issue with the Frankenbike with stock carbs and pods, right?

[Vincent Hill]

Vince,
You do know we also had the same issue with the Frankenbike with stock carbs and pods, right?

"From my text above"

"SO along with the Stock Carb, ZX11 Carbs with Pods AND the ZX11 Carbs with the KWICK Mo FLo Set up (Airbox), This problem is finally being Aired and excellent / easy solutions are being found"

"Math will dictate that if you have 6 to 8 people and 4 to 6 of them have ZX11 Carbs that somewhere between 2 to 4 will have Stock Carbs as stated in the previous Quote"

"somewhere between 6 to 8 have had this 2 to 4,000 flat spot. Of them, about 4 to 6 had ZX11 Carbs"

Again, this solution is good for all Carbs or at least a very strong place to start! Are we now all OK?

[KWICK]

Kool, good luck.
...be sure to do some testing with the stepped production outlet pipe also.

[Vincent Hill]

Kool, good luck.
...be sure to do some testing with the stepped production outlet pipe also.

Remember, My friend Steve has that Pipe on his bike AND he is waiting for me to finish My Carbs to get his started. Of course when finished I will post the Dynograph right here. The ONLY thing I hope is that If I can get 80 Foot Pounds of Torque at 4K Rpms that the Power line will be a LOT Straighter that yours was.

[KWICK]

Remember, My friend Steve has that Pipe on his bike AND he is waiting for me to finish My Carbs to get his started. Of course when finished I will post the Dynograph right here. The ONLY thing I hope is that If I can get 80 Foot Pounds of Torque at 4K Rpms that the Power line will be a LOT Straighter that yours was.

Awesome

[skandix]

For what it is worth this has been my finding on the 2 exhaust systems I have.
The Kerker system with 2" baffle ran pretty dam strong, loved the sound, the needle was 2 from the top and a washer under. Still ran lean on pilot circuit.
I changed over to my D&D system with carbon can and the bike ran even stronger and linear. Needle had to be lowered to 3rd from top, a washer under. Still running lean on pilot circuit.
With the stock motor, I would say the exhaust does play into the equation, or at least with these 2 Exhaust systems it did. My setup is different then Kwicks, so I am not comparing the two. Really interested in those Dyno #"s when you get them.

Just my $.10(inflation)

[TGHW]

For what it is worth this has been my finding on the 2 exhaust systems I have.
The Kerker system with 2" baffle ran pretty dam strong, loved the sound, the needle was 2 from the top and a washer under. Still ran lean on pilot circuit.
I changed over to my D&D system with carbon can and the bike ran even stronger and linear. Needle had to be lowered to 3rd from top, a washer under. Still running lean on pilot circuit.
With the stock motor, I would say the exhaust does play into the equation, or at least with these 2 Exhaust systems it did. My setup is different then Kwicks, so I am not comparing the two. Really interested in those Dyno #"s when you get them.

Just my $.10(inflation)

Also keep in mind that the Kerker is a 4-1 (kinda) system and the D&D is a true 4-2-1 system. That probably has some affect on the jetting.



TG

[Vincent Hill]

For what it is worth this has been my finding on the 2 exhaust systems I have.
The Kerker system with 2" baffle ran pretty dam strong, loved the sound, the needle was 2 from the top and a washer under. Still ran lean on pilot circuit.
I changed over to my D&D system with carbon can and the bike ran even stronger and linear. Needle had to be lowered to 3rd from top, a washer under. Still running lean on pilot circuit.
With the stock motor, I would say the exhaust does play into the equation, or at least with these 2 Exhaust systems it did. My setup is different then Kwicks, so I am not comparing the two. Really interested in those Dyno #"s when you get them.

Just my $.10(inflation)

NOTHING (IMHO) looks more right on a ZRX than the Kerker! Saying that, very few pipes weigh more or make less power. Saying that, if you look at my pipe, I did all I could to get that "Kerker" Look! I do not like the sound I have now as much as I did with the Long Oval Ti Muffler but I like the Look 100% Better. I even run a Plug in the end to cut the noise and now everyone says that it sounds like and Old School Kawasaki (KZ1000). BTW, I think you were Light on the inflation!

The only thing I am waiting for is the Dyno Jet parts and after setting everything up, I do not like either system of mounting the Airfilters because both leave the Slide Lift vacuum relief and Pilot Jet air open to the Unfiltered air. For now, I an going to use a foam filter that I will tie wrap on the ZX11D mount. Somehow I need to figure out a way to put a sock around the entire assembly similar to Purge. The #1 reason I am doing this is I want to see for myself what Issues people are having with the ZX11 Carbs. It is very hard to understand when you are on the outside looking in. More later

[skandix]

It is really not that hard to make your own box. I have pics of my first attempt here somewhere n the board. Second one came out great!

[beantown]

It is really not that hard to make your own box. I have pics of my first attempt here somewhere n the board. Second one came out great!

I'm going to be running the stock air box. Are you running your air box with the air correctors blocked???

[skandix]

I'm going to be running the stock air box. Are you running your air box with the air correctors blocked???

At first I did not, then I put them in to see if there was any noticeable difference, seat of the pants and feel of response seemed to make no difference.
You can use aluminum roofing nails to fill the holes. Just cut the sharp end off and tap in. Extremely tight fit.

[schmoo]

Wow, 68 Brock's for the ZRX have been sold and I have three of them . I must be special or something .

[Vincent Hill]

Wow, 68 Brock's for the ZRX have been sold and I have three of them . I must be special or something .

If I was EVER Going to live a life of CRIME, I would start at YOUR Garage! Of course I am taking the Green one first!

I Think they made 2 runs of about 50 Each so about 30 sets may still be ready for sale before more would be made. There are at least 2 sets in the UK and 1 I think in South Africa and Australia. I know that My Friend Steve is buying one when I get the ZX11 Cams and Bore Kit in his bike.. His only problem is trying to figure out if he prefers the Look of the Long Meg over the Great Sound of the Long Oval!! CHOICES Choices choices

I finally figured out what to do about the Clean air for the Carb Rack. I bought a Large sheet 24" x 30" to cut out to cover the ZX11D Mount. Then take a piece of 1/4" Plastic cut out the same size with holes drilled over the Slide lift and Jet holes and Bolted to the Mount I will post a picture when I get it done!

[beantown]

Any news on the fuel level\ float heights?? Theo did you adjust yours at all?

[Vincent Hill]

Any news on the fuel level\ float heights?? Theo did you adjust yours at all?

Good Question, I just sent him a PM!

I got everything (Finally the Air Filters arrived) to change my Carbs to the ZX11 Carbs and got side tracked by working on a Tomos Street Mate "R" Moped!! I need the Free Parking

My cousin said that It will look like a "Motorized Thong" when I get on it! (Let us all hope not!)

[TGHW]

Good Question, I just sent him a PM!

I got everything (Finally the Air Filters arrived) to change my Carbs to the ZX11 Carbs and got side tracked by working on a Tomos Street Mate "R" Moped!! I need the Free Parking

My cousin said that It will look like a "Motorized Thong" when I get on it! (Let us all hope not!)

Motorized Thong

Dang Vincent, considering all of the race bikes and HP that you have ridden in your life, I just cannot picture you riding that little bike. I can't imagine that you will enjoy it for more than a few minutes.


TG

[Vincent Hill]

Motorized Thong

Dang Vincent, considering all of the race bikes and HP that you have ridden in your life, I just cannot picture you riding that little bike. I can't imagine that you will enjoy it for more than a few minutes.


TG

I totally understand your thinking! from Riding over 300+ Hp down to 3+ HP! Here is the deal. First, I "LOVE" 2 strokes and am VERY good in getting power out of them! WHen finished it should make about 15 to 18 HP and the bike weighs 140 Pounds. (280 lbs 36 HP / 420 lbs 54 HP / 560 lbs 72 HP) Still not heavy numbers but at a speed of under 50 MPH you can get some serious performance. Second, the total time of the ride will be between 10 to 15 minutes each way IN Heavy traffic AND By Law I am allowed to use the Bicycle Lanes. Third, it will save $10 a day in parking ($200 a month or $2,400 a year) So which is more fun, giving the City $2,400 or riding this little Scoot past heavy traffic in the Bike lanes? Yes, it will WHeelie!