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Author Topic: Will 550 carbs work on a 500?  (Read 1298 times)

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Offline Sdsbassist

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  • Gus, Austin, MN.
Will 550 carbs work on a 500?
« on: June 06, 2015, 04:44:01 PM »
Guy in town has carbs for 40 bucks. Says he took them off a 550. My 500 carbs are missing jets.



These even 550 carbs?
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Gus, Austin, MN.
Current Bike:  75 750F

Past bikes: 76 750K - "Iowa Blue",78 750K Craigslist find - "Black Beth;" 77 CB750K Basketcase, with a 75K engine; 1970 Cb750 K1, "Rosa Luxembourg"
74 cb750, 75 cb550, 77 kawa 650, 81 virago 750, 83 virago 920, 80 Honda Twinstar 200, 71 Honda CT70, 1971 Honda CB750 Rat Project "Black Dahlia Bitsa"

Offline chewbacca5000

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Re: Will 550 carbs work on a 500?
« Reply #1 on: June 06, 2015, 05:21:38 PM »
$200 bikes and $40 dollar carbs I am moving to your town!  I'd buy em. 
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Offline Sdsbassist

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Re: Will 550 carbs work on a 500?
« Reply #2 on: June 06, 2015, 05:59:35 PM »
Picking them up tuesday. Gonna clean em and sell them to someone who can use them to get my carbs rolling again
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Gus, Austin, MN.
Current Bike:  75 750F

Past bikes: 76 750K - "Iowa Blue",78 750K Craigslist find - "Black Beth;" 77 CB750K Basketcase, with a 75K engine; 1970 Cb750 K1, "Rosa Luxembourg"
74 cb750, 75 cb550, 77 kawa 650, 81 virago 750, 83 virago 920, 80 Honda Twinstar 200, 71 Honda CT70, 1971 Honda CB750 Rat Project "Black Dahlia Bitsa"

Offline chewbacca5000

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Re: Will 550 carbs work on a 500?
« Reply #3 on: June 06, 2015, 06:00:41 PM »
Quote from: Sdsbassist on June 06, 2015, 05:59:35 PM
Picking them up tuesday. Gonna clean em and sell them to someone who can use them to get my carbs rolling again

They should work on your bike as well.
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Offline Sdsbassist

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Re: Will 550 carbs work on a 500?
« Reply #4 on: June 06, 2015, 06:01:04 PM »
Without modification?
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Gus, Austin, MN.
Current Bike:  75 750F

Past bikes: 76 750K - "Iowa Blue",78 750K Craigslist find - "Black Beth;" 77 CB750K Basketcase, with a 75K engine; 1970 Cb750 K1, "Rosa Luxembourg"
74 cb750, 75 cb550, 77 kawa 650, 81 virago 750, 83 virago 920, 80 Honda Twinstar 200, 71 Honda CT70, 1971 Honda CB750 Rat Project "Black Dahlia Bitsa"

Offline chewbacca5000

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Re: Will 550 carbs work on a 500?
« Reply #5 on: June 06, 2015, 07:12:17 PM »
yes they should if 76 or older
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Offline mrfish2

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Re: Will 550 carbs work on a 500?
« Reply #6 on: June 06, 2015, 07:36:02 PM »
Not too sure what kind of carbs those are, but their definitely not 550 carbs. For 40 bucks though buy them suckers.
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1976 CB550K            1979 XS1100
1980 CB650C - Sold

Quote from: crazypj on October 19, 2008, 09:14:45 PM
It's a little motor and likes having the tits revved off it.

Offline Sdsbassist

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  • Gus, Austin, MN.
Re: Will 550 carbs work on a 500?
« Reply #7 on: June 06, 2015, 08:28:31 PM »
Why do you say that? Maybe 750s? Later carbs?
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Gus, Austin, MN.
Current Bike:  75 750F

Past bikes: 76 750K - "Iowa Blue",78 750K Craigslist find - "Black Beth;" 77 CB750K Basketcase, with a 75K engine; 1970 Cb750 K1, "Rosa Luxembourg"
74 cb750, 75 cb550, 77 kawa 650, 81 virago 750, 83 virago 920, 80 Honda Twinstar 200, 71 Honda CT70, 1971 Honda CB750 Rat Project "Black Dahlia Bitsa"

Offline jonda500

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Re: Will 550 carbs work on a 500?
« Reply #8 on: June 06, 2015, 08:39:13 PM »
they look like 77/78 550 carbs to me (PD's?) - I only have older keihin carbs so not positive

If they are you will need the other intake rubber as they are different on the 500/earlier 550 carbs

Also the jets are different - in fact I don't think you'll find any interchangeable parts between the two sets
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Remember that an ignoramus is only someone who doesn't know something you just learned yesterday!

A starter clutch thread:
http://forums.sohc4.net/index.php/topic,122084.0.html
1972 CB500K1 original 4 owner bike
1972 CB500K1 returned to complete/original condition
1975 CB550F built from parts - project thread:
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197? CB500/550 constructing from left over parts
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Offline Sdsbassist

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  • Gus, Austin, MN.
Re: Will 550 carbs work on a 500?
« Reply #9 on: June 06, 2015, 08:40:41 PM »
Ok. Thats good info...im gonna pick em up and get them out there to be used
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Gus, Austin, MN.
Current Bike:  75 750F

Past bikes: 76 750K - "Iowa Blue",78 750K Craigslist find - "Black Beth;" 77 CB750K Basketcase, with a 75K engine; 1970 Cb750 K1, "Rosa Luxembourg"
74 cb750, 75 cb550, 77 kawa 650, 81 virago 750, 83 virago 920, 80 Honda Twinstar 200, 71 Honda CT70, 1971 Honda CB750 Rat Project "Black Dahlia Bitsa"

Offline Stev-o

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Re: Will 550 carbs work on a 500?
« Reply #10 on: June 06, 2015, 09:07:48 PM »
Ask him what model carbs they are. It will be stamped on the right side of carb #4. 
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'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Sdsbassist

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  • Gus, Austin, MN.
Re: Will 550 carbs work on a 500?
« Reply #11 on: June 06, 2015, 09:10:24 PM »
Other pics that were sent
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Gus, Austin, MN.
Current Bike:  75 750F

Past bikes: 76 750K - "Iowa Blue",78 750K Craigslist find - "Black Beth;" 77 CB750K Basketcase, with a 75K engine; 1970 Cb750 K1, "Rosa Luxembourg"
74 cb750, 75 cb550, 77 kawa 650, 81 virago 750, 83 virago 920, 80 Honda Twinstar 200, 71 Honda CT70, 1971 Honda CB750 Rat Project "Black Dahlia Bitsa"

Offline mrfish2

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Re: Will 550 carbs work on a 500?
« Reply #12 on: June 07, 2015, 12:35:04 PM »
Quote from: jonda500 on June 06, 2015, 08:39:13 PM
they look like 77/78 550 carbs to me (PD's?) - I only have older keihin carbs so not positive

My bad, he's right. They do look like PD carbs. Ask the seller for the model number like Stev-o said
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1976 CB550K            1979 XS1100
1980 CB650C - Sold

Quote from: crazypj on October 19, 2008, 09:14:45 PM
It's a little motor and likes having the tits revved off it.

Offline RevDoc

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Re: Will 550 carbs work on a 500?
« Reply #13 on: June 07, 2015, 01:52:31 PM »
Quote from: mrfish2 on June 07, 2015, 12:35:04 PM
Quote from: jonda500 on June 06, 2015, 08:39:13 PM
they look like 77/78 550 carbs to me (PD's?) - I only have older keihin carbs so not positive

My bad, he's right. They do look like PD carbs. Ask the seller for the model number like Stev-o said

They are PD carbs but not from a '78 550K. Different throttle return spring design than the one I have on Angie. Also, looks like the choke control springs are missing.
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Dana

'78 CB550K--Angie
'82 CB750 Custom--Eva



As soon as you straddle a bike expect every other driver on the road to suddenly start competeing for the title "Dumbestsonofa#$%*inallNorthAmerica!!"

Offline Sdsbassist

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  • Gus, Austin, MN.
Re: Will 550 carbs work on a 500?
« Reply #14 on: June 07, 2015, 01:54:33 PM »
I Wil get that code
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Gus, Austin, MN.
Current Bike:  75 750F

Past bikes: 76 750K - "Iowa Blue",78 750K Craigslist find - "Black Beth;" 77 CB750K Basketcase, with a 75K engine; 1970 Cb750 K1, "Rosa Luxembourg"
74 cb750, 75 cb550, 77 kawa 650, 81 virago 750, 83 virago 920, 80 Honda Twinstar 200, 71 Honda CT70, 1971 Honda CB750 Rat Project "Black Dahlia Bitsa"
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