1980 honda cb650 custom questions

If it's broken or just needs tweaked

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corolla90
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Joined: Mon Oct 27, 2008 9:07 pm

1980 honda cb650 custom questions

Postby corolla90 » Mon Oct 27, 2008 10:04 pm

hey evryone, new to the site. well i just bought my first honda cb, i paid 350 it was not running. i got it home and try to fire it up but it looked like the carbs were flooding, i clean them and it stopped, now it runs on choke only. when i give it gas it dies and i can see gas gushing out above DIAPHRAGM SET, PUMP on the 2nd carb in on the left. any ideas? also how and were can i find the parts to lower the rear end of the bike?

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JasonLester
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Re: 1980 honda cb650 custom questions

Postby JasonLester » Mon Oct 27, 2008 10:36 pm

Well unfortunately there is a comon problem on CB650s. The charging system dies at some point. If you have a manual check your system because that may be a problem and it won't help the other stuff. Its not a cheap fix but it has to be done.

As for the carbs unfortunatly the carbs for 1980 are different than other years so I haven''t found rebuilt kits for them. I put seafom in the tank to try to keep from opening them up until I have kits in hand. also check the boots between the carbs and the engine. If they leak then it could be part of your problems.

jochild
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Re: 1980 honda cb650 custom questions

Postby jochild » Tue Oct 28, 2008 8:01 am

I got my rebuild kits on z1enterprises.com about a year ago. I'm not sure if they still have them available. For all 4 kits it was about $80, so get ready to spend some money.

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JasonLester
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Re: 1980 honda cb650 custom questions

Postby JasonLester » Tue Oct 28, 2008 12:50 pm

Cool site but I don't see any rebuild kits. Unfortunately.

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Volker_P
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Re: 1980 honda cb650 custom questions

Postby Volker_P » Thu Oct 30, 2008 3:35 am

Welcome here! :D
Good sign that it starts and runs. Your #2 gas leak and dying without choke when turning the throttle gives a hint that the accelerator pump located at carb #2 is leaky. Maybe fixing that already solves your problem. Not sure whether you have to get off the carbs for that, but worth a try to avoid it if your carbs also get out that hard as in most cases.
I see no hint to a charging/ignition problem so far.
The rear shocks turn to early blocking already in stock, so I'd propose you ride for a while and think over lowering again then. If your legs are definitively too short, consider to lower the seat first.
Cosky's great (free) online manual: http://cosky0.tripod.com

forum links to common technical issues

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arcangel
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Re: 1980 honda cb650 custom questions

Postby arcangel » Thu Oct 30, 2008 6:49 pm

Have you tried any Honda dealers for the rebuild kits?
I got my 1981 cb650c Kits from a dealer They were around $37.50 each not cheap but they had most every o ring even the ones between the carbs as well also I have heard of a few other places you might get non oem parts Some even have the jets and float valves
Bike bandit is one that had a set for my bike but I did not know if they were a good source or not but some one on here told me they got there kits from them and that they were good to deal with.
But who knows.
A>
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Maxx
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Re: 1980 honda cb650 custom questions

Postby Maxx » Fri Oct 31, 2008 2:06 am

Does the kit look like this?

Image

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JasonLester
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Re: 1980 honda cb650 custom questions

Postby JasonLester » Fri Oct 31, 2008 10:22 am

I'm not 100 sure but it looks like it. What is that one for and where did you find it?

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Maxx
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Location: 127.0.0.1 USA

Re: 1980 honda cb650 custom questions

Postby Maxx » Fri Oct 31, 2008 8:13 pm

Do a Honda cb650 search here at the link. It says it's for 79 - 80

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

This is where I'm getting my carb, brake and clutch kits from.

This place is also on ebay but charges more there.

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Maxx
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Re: 1980 honda cb650 custom questions

Postby Maxx » Thu Nov 06, 2008 9:07 pm

Did the post help or not?

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JasonLester
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Re: 1980 honda cb650 custom questions

Postby JasonLester » Thu Nov 06, 2008 11:16 pm

It helped me...I haven't ordered them but I'm not sure I need them yet.

But now I know where to get them.

cb650
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Re: 1980 honda cb650 custom questions

Postby cb650 » Fri Nov 07, 2008 9:24 am

FYI The 79 carbs are the same as 80. 81/82 changed
Did you clean the tank out?!?!?!?!


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