carb help

If it's broken or just needs tweaked

Moderators: Volker_P, tidd650

User avatar
hanksta
Posts: 9
Joined: Fri Mar 10, 2006 6:48 pm
Location: maine

carb help

Postby hanksta » Sat Mar 11, 2006 5:03 pm

i have a 1980 cb650c with keihin pd 26mm carbs, can anyone tell me if 26mm keihin carbs from a 1977 cb550 will fit? also how about the carbs from a newer 650 nighthawk, (will they line up, are the throttle cables the same etc.) thanks for any help.
Last edited by hanksta on Sun Mar 12, 2006 11:50 pm, edited 1 time in total.

cajun
Posts: 5
Joined: Wed Mar 08, 2006 12:27 am
Location: houston
Contact:

Postby cajun » Sun Mar 12, 2006 5:40 pm

I dont think they will fit. It would be taking a smaller jet setup and probably would start the bike, but run very bad. Might run way to lean and burn it up. If you could spend the money on all the parts and machine work prob needed then go ahead. Whats wrong with the carbs on the bike?

User avatar
hanksta
Posts: 9
Joined: Fri Mar 10, 2006 6:48 pm
Location: maine

Postby hanksta » Sun Mar 12, 2006 11:32 pm

it should be just a matter of rejetting the carbs to match the old ones as long as they will line up properly. from what i can tell the old carbs were only used for one year and they are in pretty bad shape, i am having trouble findeng all the parts i need. i wanted to see if i could swap them to something a little more common.

User avatar
Volker_P
Posts: 5508
Joined: Mon Mar 06, 2006 1:53 am
Location: southern Germany

Re: carb help

Postby Volker_P » Mon Mar 13, 2006 2:34 am

:!: be aware that the CV and the piston carbs do not line up but require different cylinder heads! :?

cb650
Posts: 2959
Joined: Fri Mar 03, 2006 7:20 am
Location: Denver CO USA
Contact:

Re: carb help

Postby cb650 » Mon Mar 13, 2006 2:09 pm

Volker_P wrote::!: be aware that the CV and the piston carbs do not line up but require different cylinder heads! :?

Ditto



Terry

User avatar
hanksta
Posts: 9
Joined: Fri Mar 10, 2006 6:48 pm
Location: maine

Postby hanksta » Mon Mar 13, 2006 4:47 pm

from what i have read it looks like i would be better of fixing my old ones, what would be a good source of parts for these carbs. keihin pd 50b.

User avatar
Ibsen
Posts: 375
Joined: Fri Mar 03, 2006 12:09 pm
Location: Kongsvinger, Norway
Contact:

Postby Ibsen » Tue Mar 14, 2006 12:46 pm

What is wrong with your carbs, and what parts do you need?
Siriusconic in Canada used to have rebuild kits for these carbs, but if I remember correctly they content a float valve, and the float bowl gasket and the the different o-rings. If you need jets you will have to try a Honda dealer or one of the online shops dealing with carb jets.

User avatar
hanksta
Posts: 9
Joined: Fri Mar 10, 2006 6:48 pm
Location: maine

Postby hanksta » Sat Mar 18, 2006 11:23 am

the carbs need complete gasket sets(about $30 each carb) and accelerator pump diaphram( $60 ). i had this bike given to me and i dont know anything about it. i dont want to spend almost $200 on it only to find out it needs another $200 (and another and another) it has good compression and is pretty good shape but i might just part it out. thank you for your help.

User avatar
Ibsen
Posts: 375
Joined: Fri Mar 03, 2006 12:09 pm
Location: Kongsvinger, Norway
Contact:

Postby Ibsen » Sat Mar 18, 2006 5:57 pm

I think you can get the accel pump diaphragm much cheaper that $60 from Siriusconic in Canada. They used to have the rebuild kits as well:

http://www.siriusconinc.com/contact.asp

If you can fix the carbs, and the bike looks decent, why not give it a chance. If you decide to part it out eventually, it shouldn't be too hard to cover the expenses for the carb parts.

What kind of milage does it have?

User avatar
hanksta
Posts: 9
Joined: Fri Mar 10, 2006 6:48 pm
Location: maine

Postby hanksta » Sun Mar 19, 2006 12:09 am

i tried Siriusconic they seem to have everything but what i need. the bike has 21000 miles. is that alot for this bike or do they run forever.

User avatar
Ibsen
Posts: 375
Joined: Fri Mar 03, 2006 12:09 pm
Location: Kongsvinger, Norway
Contact:

Postby Ibsen » Sun Mar 19, 2006 5:18 am

It should run fine for at least 21 000 more miles. :)
Properly taken care of and maintained they should last for a long time. 21 000 miles isn't much really.

User avatar
Volker_P
Posts: 5508
Joined: Mon Mar 06, 2006 1:53 am
Location: southern Germany

Re: carb help

Postby Volker_P » Mon Mar 20, 2006 1:53 am

hanksta wrote:i tried Siriusconic they seem to have everything but what i need. the bike has 21000 miles. is that alot for this bike or do they run forever.

I bought mine with that mileage at 1992. Now it has about 60000. A smashed tooth at 4.th gear at 40000 was my only serious engine problem. Cylinder head leaking gets annoying about every 25000 or so. Still first pistons and running fine, but started using oil at higher rpm at about 45000. Maintenance is nothing complicated, except for the carbs I find everyhing is easy to access and to change.
If you get ahead with the chassis (which is more than a bit archaic :P), the engine is no problem and the CB650 is a quite reliable motorcycle to have a lot of fun with for many years.

User avatar
hanksta
Posts: 9
Joined: Fri Mar 10, 2006 6:48 pm
Location: maine

Postby hanksta » Mon Mar 20, 2006 5:34 am

i am hopeing that i can fix it for my wife to ride she dosent use a bike that much so it will only get obout 1000 miles a year so it should last for many years and every honda i have ever owned has been very reliable.

User avatar
hanksta
Posts: 9
Joined: Fri Mar 10, 2006 6:48 pm
Location: maine

Postby hanksta » Sun Apr 02, 2006 7:30 pm

just thought someone might like to know i found all the carb parts i need at very good prices. check them out. http://www.z1enterprises.com/default.aspxst :lol:

User avatar
Ibsen
Posts: 375
Joined: Fri Mar 03, 2006 12:09 pm
Location: Kongsvinger, Norway
Contact:

Postby Ibsen » Mon Apr 03, 2006 1:40 pm

Yes, Jeff Saunders at Z1Enterprises is very helpful, and his prices is lower than most dealers. :)


Return to “Technical Discussion”

Who is online

Users browsing this forum: No registered users and 48 guests