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Author Topic: 1983 Honda cb 1000c  (Read 4956 times)

Offline krisscb1000c

  • Posts: 34
Re: 1983 Honda cb 1000c
« Reply #40 on: Mar 14, 2018, 18:53:17 »
What other carburetors can I put in this bike  which one year and model pls that's the only thing I'm missing right now yeah and a half in this project is almost done

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Offline teazer

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Re: 1983 Honda cb 1000c
« Reply #41 on: Mar 14, 2018, 20:11:09 »
Don't respond fast if I hit the gas is weird symptom . I took it for a test drive the other day and I got into the highway and it went off on me I press the gas and it wasn't going nowhere , my spark plugs are good  it showing this Burning property....


Throttle lag is not uncommon with those carbs, but are we talking a small amount of time between opening throttle and response or are we talking major issues?

Spark plug color tells you NOTHING unless you are wide open.  In fact if it shows "OK" at low revs, it's running lean.

When you say "went off on me" do you mean that opening the throttle made no difference and the speed stayed the same or something else? Did it improve on teh way home on surface streets compared to the freeway.

We realize that with limited riding experience, you may not have the vocabulary to describe what happened, but try in your own words to describe exactly what was happening at different times.

I'd speculate that with pods and shorty pipes, the jetting is miles off.  Those motors can be a PIA to jet correctly.

There's a twin Mikuni conversion kit around but it's not cheap. https://www.speedmotoco.com/v/vspfiles/photos/KM-vm34-DOHC-8.jpg

Or http://www.cyclexchange.net/DOHC%20PARTS%20pAGE.htm

https://www.frankmxparts.com/Keihin-CR-31-special-roundslide-carburetor-kit-Honda-CB-750-750F-DOHC-Super-Sport

It is also possible to get a set of GSXR carbs and re-space them to work but cheapest is to fit stock exhaust and airbox.

Interestingly Honda used a version of those carbs on their RCB endurance race bikes but I suspect that jetting was still an issue for them.
 


Can you get the bike to a dyno center to let them test it and see how rich or lean it is?

Offline cxman

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Re: 1983 Honda cb 1000c
« Reply #42 on: Mar 15, 2018, 18:19:16 »
i make the speedmotoco.com kit

if anyone wants they can order it from me
1978 CX650 Super Deluxe
1979 XS1100 Special
1974 xl350
1983 cx650 Custom
1973 cb750
1980 cb750
1981 cb650
1982 cb900 c
1974 kawasaki 350 bighorn
1983 GL1100 aspy full dress
1983 GL1100 Nekid
and a bunch of others

Offline cxman

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Re: 1983 Honda cb 1000c
« Reply #43 on: Mar 15, 2018, 18:54:24 »
what is your static battery voltage

what is your charging voltage at 3k rpm and 4k rpm

do you have spark at all cylinders

are your exhausts all hot ?
1978 CX650 Super Deluxe
1979 XS1100 Special
1974 xl350
1983 cx650 Custom
1973 cb750
1980 cb750
1981 cb650
1982 cb900 c
1974 kawasaki 350 bighorn
1983 GL1100 aspy full dress
1983 GL1100 Nekid
and a bunch of others

Offline krisscb1000c

  • Posts: 34
Re: 1983 Honda cb 1000c
« Reply #44 on: Mar 16, 2018, 23:48:38 »
Throttle lag is not uncommon with those carbs, but are we talking a small amount of time between opening throttle and response or are we talking major issues?

Spark plug color tells you NOTHING unless you are wide open.  In fact if it shows "OK" at low revs, it's running lean.

When you say "went off on me" do you mean that opening the throttle made no difference and the speed stayed the same or something else? Did it improve on teh way home on surface streets compared to the freeway.

We realize that with limited riding experience, you may not have the vocabulary to describe what happened, but try in your own words to describe exactly what was happening at different times.

I'd speculate that with pods and shorty pipes, the jetting is miles off.  Those motors can be a PIA to jet correctly.

There's a twin Mikuni conversion kit around but it's not cheap. https://www.speedmotoco.com/v/vspfiles/photos/KM-vm34-DOHC-8.jpg

Or http://www.cyclexchange.net/DOHC%20PARTS%20pAGE.htm

https://www.frankmxparts.com/Keihin-CR-31-special-roundslide-carburetor-kit-Honda-CB-750-750F-DOHC-Super-Sport

It is also possible to get a set of GSXR carbs and re-space them to work but cheapest is to fit stock exhaust and airbox.

Interestingly Honda used a version of those carbs on their RCB endurance race bikes but I suspect that jetting was still an issue for them.
 


Can you get the bike to a dyno center to let them test it and see how rich or lean it is?
Thanks for the info

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Offline krisscb1000c

  • Posts: 34
Re: 1983 Honda cb 1000c
« Reply #45 on: May 14, 2018, 16:38:49 »
Bike is working fine ,cleaning and detailing under way!!! Ride like beast👹👹👹👹

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Offline krisscb1000c

  • Posts: 34
Re: 1983 Honda cb 1000c
« Reply #46 on: Jun 28, 2018, 17:50:24 »
🔥🔥🔥🔥🔥🔥

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Offline krisscb1000c

  • Posts: 34
Re: 1983 Honda cb 1000c
« Reply #47 on: Jun 28, 2018, 17:54:06 »


🔥🔥🔥🔥🔥🔥 2/12 year later

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Offline krisscb1000c

  • Posts: 34
Re: 1983 Honda cb 1000c
« Reply #48 on: Sep 18, 2018, 17:03:48 »
For sale $5300 ,,

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