Author Topic: Weber carb set-up  (Read 151726 times)

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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: Weber carb set-up
« Reply #825 on: November 25, 2018, 02:57:46 PM »
No longer manufactured. You will have to find a used one.
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline xriccix

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Re: Weber carb set-up
« Reply #826 on: November 25, 2018, 03:01:27 PM »
No longer manufactured. You will have to find a used one.

Gonna be fun across the pond :)

Offline bear

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Re: Weber carb set-up
« Reply #827 on: November 25, 2018, 03:17:48 PM »
I have a spare I think.
Where are you England?

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Brian
The older I get the faster I was.

Offline Medyo Bastos

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Re: Weber carb set-up
« Reply #828 on: November 25, 2018, 03:28:57 PM »
I’ve got one under my bed.


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Offline xriccix

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Re: Weber carb set-up
« Reply #829 on: November 25, 2018, 03:31:59 PM »
I have a spare I think.
Where are you England?

Cheers,
Brian

Bedford, just North of London.

I’ve got one under my bed.


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Who doesn't?

Well me....

Offline Medyo Bastos

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Re: Weber carb set-up
« Reply #830 on: November 25, 2018, 03:33:38 PM »
I have a spare I think.
Where are you England?

Cheers,
Brian

Bedford, just North of London.

I’ve got one under my bed.


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Who doesn't?

Well me....


Let me know if I need to dig it out


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Offline scottly

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Re: Weber carb set-up
« Reply #831 on: November 25, 2018, 08:09:30 PM »
For what it's worth, the two-piece MPD manifolds are the easiest to fit, while the RC style manifolds are the most difficult.
Don't fix it if it ain't broke!
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Offline Tintop

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Re: Weber carb set-up
« Reply #832 on: November 26, 2018, 05:03:37 AM »
Lynx in Australia still lists a Weber manifold for the Honda 750, also a complete kit with 40 DCOE's.

https://www.lynxauto.com.au/honda-motorcycle-cb-750-2-x-weber-dcoe-manifold.html
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Offline Martin (1975CB750F)

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WELDLESS CB750 FRAME
« Reply #833 on: November 26, 2018, 04:54:51 PM »
Hi Scottly,

I am looking for a weldless frame kit for my 1975 CB750F. Do you still make them?

Thanks,
Martin

Offline scottly

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Re: Weber carb set-up
« Reply #834 on: November 26, 2018, 07:18:17 PM »
Hello Martin. Yes, I have frame kits ready to be shipped, but this is not the proper place to discuss them. ;) Make some more posts so we can exchange private messages; you need 5. The introduction page is a good place to start.
Scott
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Offline Don R

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Re: Weber carb set-up
« Reply #835 on: November 29, 2018, 12:50:30 PM »
 I'll be annoying you guys with questions, I'm getting a set of Webers from Bill Benton. I'll read the entire thread before I ask something that's been covered.   
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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: Weber carb set-up
« Reply #836 on: November 29, 2018, 02:14:51 PM »
Good deal Don. At least I won't have to ask now!  ;)
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline Don R

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Re: Weber carb set-up
« Reply #837 on: November 29, 2018, 02:30:52 PM »
 If I can't make them work, I can bolt them to the engine that I can't make run! Perfect!
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: Weber carb set-up
« Reply #838 on: November 29, 2018, 03:21:20 PM »
LOL. I tried ordering a set of K7/K8 carb boots from CruzinImage for $50. They "shipped" but never arrived after a month. He refunded my money then shut me off. I had a buddy order a set then and the same happened. I ended up getting a set from CB750Supply for $100. They showed up a week before I left for the island so I haven't tried fitting them yet. The extra 1mm of carb opening for the K7/K8 PD carbs is helpful for the larger Webers. I'm back in the States during December but I'm working 12 of those cold Colorado days so I probably won't get to try until April. You are the guinea pig  ;)
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline Don R

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Re: Weber carb set-up
« Reply #839 on: November 29, 2018, 08:45:53 PM »
  Drag racing got me enough autometer contingency to get a wide band O2 sensor. It would require a weld bung in the collector and a long enough tailpipe/muffler to keep fresh air from sucking back into the pipe. I can weld it with stainless rod to minimize the damage to the chrome.  That might be as good as a trip to the dyno.
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline scottly

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Re: Weber carb set-up
« Reply #840 on: November 29, 2018, 08:53:23 PM »
There has already been a bit of dyno work done, Don. ;) Which manifold did you get?
Don't fix it if it ain't broke!
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Offline Don R

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Re: Weber carb set-up
« Reply #841 on: November 29, 2018, 09:15:52 PM »
 Bill said it's an RC cobra type. It appears to have angled carb connections. I think they have changed hands a couple times around here. Not sure if anyone got them running or not.
« Last Edit: November 29, 2018, 09:25:17 PM by Don R »
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline Don R

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Re: Weber carb set-up
« Reply #842 on: November 29, 2018, 09:18:30 PM »



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  I snagged this pic belonging to Razz off this thread. They look pretty much like these except with a breadbox style filter box and foam filter media inside.
« Last Edit: November 29, 2018, 09:26:09 PM by Don R »
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline Don R

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No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline scottly

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Re: Weber carb set-up
« Reply #844 on: November 29, 2018, 09:37:59 PM »
That looks like a one-piece MPD manifold. I have a spare set of Frank's soft silicone manifold-to-spigot hoses. ;)
Don't fix it if it ain't broke!
Helmets save brains. Always wear one and ride like everyone is trying to kill you....

Offline 754

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Re: Weber carb set-up
« Reply #845 on: November 29, 2018, 09:48:05 PM »
Mine is a one piece that has been cut, easier to install but moves around. I should convert it to proper 2 pce.. welding required.    Weber pic of the day..
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Offline Don R

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Re: Weber carb set-up
« Reply #846 on: November 29, 2018, 10:09:41 PM »
 Thanks Frank, that pic is enlightening.
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline 754

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Re: Weber carb set-up
« Reply #847 on: November 29, 2018, 10:31:11 PM »
You have a good manifold, i am not so sure you can  easily change jets with the RC bolted in place.
 On yours with MPD, you can easily  pull the wing nut cover off. Then pull the long jet assembly. Its 3 parts. The main part is the emulsion tube, then on top and bottom are, I think the main and the air correction or low speed jet. They slip in and out.
When you pull the long part out using a flat blade screwdriver, you do not need to drain gas. You can change jets in about 4 minutes..
 Not the ball bearings on the throttle shaft, and the changeable venture tube in the left bore.
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline 754

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Re: Weber carb set-up
« Reply #848 on: November 29, 2018, 10:36:14 PM »
Actually Razz,s manifold is straight.. hmm
 MPD are splayed outward, making jet access easier..
« Last Edit: November 29, 2018, 11:38:17 PM by 754 »
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Don R

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Re: Weber carb set-up
« Reply #849 on: November 29, 2018, 10:57:45 PM »
 I'll know more soon, I read up to page 16 so far. One of the pics bill sent was silicone hose connectors. They have 30's and a single cable pull. I'm hoping the bodies clean up well. I asked Santa for Weber books for Christmas.
« Last Edit: December 01, 2018, 02:09:31 PM by Don R »
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.