Mikuni 34E1 carburetors

[surfish95747]

Hey guys, I am trying to upgrade the carburetors on my 1980 cb750k. Will Mikuni 34E1 (T711?) carburetors fit and be an upgrade, allowing my to use velocity stacks or air pods? The guys selling these thinks they are off a 2000 gsxr 600. Thanks!

[Truck]

Shiny currently has a thread going where he is getting the fine tuning done on a set, looks promising.

[hambone]

best year mikunis are 86-92 for this conversion...34mm or 36mm...ive not heard of this year working out.i think theres a sensor of some sort that plugs rt into the 2000 . if theres a way to bypass it ive not heard of it..

[Griffin]

I know this is an old thread but both cycle x and speedmotoco have dual Mikuni kits available now for this bike. Has anyone used the speedmotoco set. It looks the most comolete, comes with pods pre-tuned. I'm thinking about getting them myself. I have the same bike. Here is a pic from their website.


Not sure I like the look completely I'd probably paint the intake.

[Truck]

Any idea on price? Are they tuned for stock engine or can you give them specs and have them tuned?

[Griffin]

They are $619.95 here is the link.  

http://www.speedmotoco.com/cb750-DOHC-vm34-dual-carb-Mikuni-Murrays-p/km-vm34-dohc.htm

Cheaper then CR carbs but more than the cycle x version with velocity stacks found here for
$499.00 http://www.cyclexchange.net/Honda%20Twin%20Carb%20Page.htm

Cycle X says not recommended for stock frames. I don't like how the stacks stick out the side like that either.  

The speedmotoco website says they are fitted and tested on a test bike before shipping them out.  I think stock engine is a fair guess. Maybe shoot them an email to see if they can customize the tuning.

Looks like a great solution to me though. 

On Wed, Apr 13, 2016 at 5:41 PM, Truck [via Honda CB750'S] <[hidden email]> wrote:

Any idea on price? Are they tuned for stock engine or can you give them specs and have them tuned?

It's only illegal if you get caught.

If at first you don't succeed, use more lighter fluid

95% of Harley Davidsons ever made are still on the road... The other 5% made it home.

New Baltimore, Va '82 CB900c, 1980 CB985F/K 'Mutt"

---

If you reply to this email, your message will be added to the discussion below:

http://honda-cb750-s.456789.n3.nabble.com/Mikuni-34E1-carburetors-tp4056155p4060040.html

To unsubscribe from Mikuni 34E1 carburetors, click here.
NAML

[shinyribs]

hambone wrote

best year mikunis are 86-92 for this conversion...34mm or 36mm...ive not heard of this year working out.i think theres a sensor of some sort that plugs rt into the 2000 . if theres a way to bypass it ive not heard of it..

Hambone is on the money.

The later model carbs in the original post are setup to work on a later model engine that holds thecarbs at a very steep angle. You won't be able to get the float to ever work right as our engine holds the carbs nearly perfectly vertical.

Pic of the carb angle on the Suzuki engine.

[TOOLS1]

"Pre-tuned" Yea right. Now how about some ocean front property in Arizona?
TOOLS

[Griffin]

Maybe that's why the cycle x version gets mounted up and out. Maybe there's are better. I've emailed a bunch of questions to speedmotoco we'll see what they say about it.

On Apr 13, 2016 6:53 PM, "shinyribs [via Honda CB750'S]" <[hidden email]> wrote:

hambone wrote

best year mikunis are 86-92 for this conversion...34mm or 36mm...ive not heard of this year working out.i think theres a sensor of some sort that plugs rt into the 2000 . if theres a way to bypass it ive not heard of it..

Hambone is on the money.

The later model carbs in the original post are setup to work on a later model engine that holds thecarbs at a very steep angle. You won't be able to get the float to ever work right as our engine holds the carbs nearly perfectly vertical.

Pic of the carb angle on the Suzuki engine.

A free people ought not only be armed and disciplined, but they should have sufficient arms and ammunition to maintain a status of independence from any who might attempt to abuse them, which would include their own government.~George Washington

---

If you reply to this email, your message will be added to the discussion below:

http://honda-cb750-s.456789.n3.nabble.com/Mikuni-34E1-carburetors-tp4056155p4060042.html

To unsubscribe from Mikuni 34E1 carburetors, click here.
NAML

[Griffin]

Haha it actually says pre-jetted. I suppose I interpreted that wrong. The cycle x version says it comes with extra jets. I thought the speedmotoco version was better but maybe not. The intake just looks huge on the cycle x and I don't like how they say not for stock frames.

On Apr 13, 2016 10:10 PM, "TOOLS1 [via Honda CB750'S]" <[hidden email]> wrote:

"Pre-tuned" Yea right. Now how about some ocean front property in Arizona?
TOOLS

Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)

---

If you reply to this email, your message will be added to the discussion below:

http://honda-cb750-s.456789.n3.nabble.com/Mikuni-34E1-carburetors-tp4056155p4060046.html

To unsubscribe from Mikuni 34E1 carburetors, click here.
NAML

[Griffin]

Hey guys,

This is the email response I just got from speedmotoco

"The kits we offer fit the stock frame. The others do not. We port match and test each kit as built ( synced and test run on an engine)
 Hands down this is a better and more power full kit. Pics of carbs on bike>>> http://speedmotocotech.blogspot.com/2014/10/cb750-dohc-vm34-2-1-carburetor-kit.html"

[TOOLS1]

Unless they have installed them on your engine to sync them, there is no way they are going to synced. There are too many variables involved with an engine that can affect the sync of the carbs, that there is very little possibility that they could sync them and they be synced to your engine. I myself, for this statement would not trust anything they say. On the other hand, I have dealt with Cycle-X for several years, and spoken with Ken himself on a few occasions. Great guy and really knows his stuff. BTW the Cycle-X kit will fit the stock frame, but how it is done is highly classified information.
TOOLS

[Griffin]

I've emailed cycle x now too. Let's see what they have to say. If they fit with too much effort I'm happy to save 120.00 bucks. 500.00 seems like a good deal if they work as well as the reviews on their website say they do. I'm not a fans of how the stacks stick out on the bike in the photo but I'm sure it will grow on me.

What's better foam or screens for stacks. What if you get caught in the rain? Looks like water could get in. That was the other reason I liked the speedmotoco version with pods.

On Apr 14, 2016 4:35 PM, "TOOLS1 [via Honda CB750'S]" <[hidden email]> wrote:

Unless they have installed them on your engine to sync them, there is no way they are going to synced. There are too many variables involved with an engine that can affect the sync of the carbs, that there is very little possibility that they could sync them and they be synced to your engine. I myself, for this statement would not trust anything they say. On the other hand, I have dealt with Cycle-X for several years, and spoken with Ken himself on a few occasions. Great guy and really knows his stuff. BTW the Cycle-X kit will fit the stock frame, but how it is done is highly classified information.
TOOLS

Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)

---

If you reply to this email, your message will be added to the discussion below:

http://honda-cb750-s.456789.n3.nabble.com/Mikuni-34E1-carburetors-tp4056155p4060054.html

To unsubscribe from Mikuni 34E1 carburetors, click here.
NAML