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Discussion Starter #1 (Edited)
A friend has recently bought a 1968 CL350 after having a go on my 71.

I am trying to get his bike running properly but it's proving to be a bit of a challange.

The carbs are stamped 350A and appear to have different internal components than my D carbed model.

I am having real problems identifying the correct idle jets and rubber passage plugs (which are missing) just found out no rubber plugs on the 350-A carb :)


Can anyone out there help please ?

Also are there any new aftermarket carbs that will fit whilst retaining the stock air filters ?

Thanks in advance

Tim
 

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Discussion Starter #3
Hi
The problem I am having is finding new pilot jets as they are different from the later carbs and seem to be specific to these early K0 models.
I have tried severeal Keihin specialists here in the UK and they are all advsing that these slow jets are no longer available.
Whats everyone using as an alternative, is there an aftermarket supplier?
Heres a pic of the jets I need #38 IMG_8832.jpg

Regards
Tim
 

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Are the jets buggered up and damaged?

If not just soak them in cleaner and run a very fine strand of copper wire thru the holes to insure they are clear.

The internal BRASS Parts of a Carb do NOT wear out. They can become clogged, but that can be cleaned.

They ONLY need to be replaced if they are damaged.
 

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Discussion Starter #6
Those replica ones have a different size thread, the originals I have are pretty chewed up, they may be ok at a push but some new ones would be good.
 

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On the other hand, making a jet on a good lathe is not too hard of a task. You can use hexagonal brass if you want to use a wrench, or just slot the end (f.e. carefully with an angle grinder) for a screwdriver. If you cannot get an original jet, and are uncertain of the aftermarket quality, this is one option... You can get special tapered carburetor jet reamers to make the hole really exact, or small drill bits. Best is to drill a smaller hole with a drill, and the use the reamers to get a smooth fnish on the correct diameter.

Those reamers may also be useful for jetting, f.e. if you have a bunch of old jets of a single diameter, you can enlarge the holes...

However, those atomiser jets with side holes may take more time...
 

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Hi
The problem I am having is finding new pilot jets as they are different from the later carbs and seem to be specific to these early K0 models.
I have tried severeal Keihin specialists here in the UK and they are all advsing that these slow jets are no longer available.
Whats everyone using as an alternative, is there an aftermarket supplier?
Heres a pic of the jets I need #38 View attachment 225154

Regards
Tim
ebay is your friend...they turn up if you keep looking
 

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CB/CL 350 Carbs

tytim

The go to guys for me are Common Motor Collective. They're a little pricey but the youtube how-to videos are well worth it. Everything from engine rebuild to setting the timing to rebuilding carbs. They do nothing but early Honda twins and have the hard to find carb parts.

Also, float height for a cl/cb350 is anywhere from 22mm to 26mm depending on the numbers on your motor. There is a guy out there with a table listing all the carb specs. I cant remember where I found it but a google search should get you somewhere close.

Hope I helped

Chris
70 CL350
77 CB550
73 TX500
...and a few old Harleys
 
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