Topic: Mistery CB750 carbs

[Raul CB750K1]

Some years ago I bought from a german ebay seller a set of carbs that were listed as "K2". I have a K1, but I just wanted the rack to have an spare, in the grounds that I could always use the right jets if need arise.

They have been stored during all this time, and I thought that I probably should just have to let them go. So I opened the bowls -had to use the rubber mallet, didn't opened them when I got them- and, under a varnish layer, I found 120 and 40 jets. I didn't take any picture of my carbs when I rebuilt them, but if memory serves me, that's the right configuration for the K1, right?

[CycleRanger]

Are the carb bodies marked 7A?

[Kevin D]

120 and 40 jets. that's right for the K1?

yes - for stock setup

[farmertom]

...my new favorite link:
http://www.hondachopper.com/garage/carb_specs/carb_specs.html

[Raul CB750K1]

Are the carb bodies marked 7A?

Will check

...my new favorite link:
http://www.hondachopper.com/garage/carb_specs/carb_specs.html

Interesting link, in my bookmarks now!

[phil71]

jeeze, that bowl looks like a tequila sunrise.

[Raul CB750K1]

jeeze, that bowl looks like a tequila sunrise.

It was not the worst of the four.....

[Frostyboy]

jeeze, that bowl looks like a tequila sunrise.

I had a set of bowls that looked exactly like that. Here's what I did with 'em.

http://forums.sohc4.net/index.php?topic=61168.msg717941#msg717941

[ekpent]

1971's also had the brass floats which you have.

[Raul CB750K1]

jeeze, that bowl looks like a tequila sunrise.

I had a set of bowls that looked exactly like that. Here's what I did with 'em.

http://forums.sohc4.net/index.php?topic=61168.msg717941#msg717941

You mean that just with soaking in vinegar and letting sit overnight you get that result?

[Frostyboy]

You mean that just with soaking in vinegar and letting sit overnight you get that result?

Correctomundo Raul. O'night soak & a quick blast of carb cleaner the next day. Cool hey? 
White vinegar btw.

[goldarrow]

Do not soak carbs in vinegar, it will eat your aluminum.  You have been warned.  Well, if you don't use too much of vinegar, I guess it's alright.

[Raul CB750K1]

Damn! What should I do then?

[goldarrow]

Pine-sol or simple green mix with water, soak over night. Blow out with compressed air. Nice and clean with fresh smell

[bryanj]

Go to a car paint shop and get 5 ltr of "Gunwash" its the nearest now available to Celulose Thinners. MUST BE USED IMMERSING THE BITS IN A SEALED CAN OR JAR othervise all the "Goodness" evaporates, plus no smoking and not in the oven as it goes bang quite easily!!

[dave500]

the bodies are a zinc alloy,the bowls and top cap are aluminium,the zinc casts easier for those intricate passages in the body,70s tech stuff.

[Frostyboy]

Do not soak carbs in vinegar, it will eat your aluminum.  You have been warned.  Well, if you don't use too much of vinegar, I guess it's alright.

Vinegar is approx 5% acetic acid, pure acetic acid is transported in aluminium tanks.
I only used it to clean the bowls. I had the rest of the carbs soda blasted.

[ekpent]

Anybody out there still use Carb cleaner ?? Guess I am just to old 

[Tews19]

Anybody out there still use Carb cleaner ?? Guess I am just to old 

Eric I saw that at an auto store. You recommend? I want to learn the 750 carbs and have a set sitting here doing nothing. If I mess up not that big of a deal.

[ekpent]

Anybody out there still use Carb cleaner ?? Guess I am just to old 

The carb cleaner nowadays is not as 'hot' as the stuff they used to make Nick but it has always worked well for me. After a good soaking and cleaning it can be rinsed out with water and then all the passages blown out well with compressed air. Follow up with some areosol carb cleaner to make sure passages are clear,little more air blow and be done.



Eric I saw that at an auto store. You recommend? I want to learn the 750 carbs and have a set sitting here doing nothing. If I mess up not that big of a deal.