SOHC.co.uk Forums > CB500/550

Which Carbs do I need?

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Bryanj:
If no screws on manifolds they are 550 K3 manifolds which use PD(devil) carbs with a different plenum and rubbers to carbs.
If you have to replace i personally would go for a complete 500 stup from filter box to head

Acro1985:
Thanks for help.

I am right in thinking the PD (devil) carbs are so called devils because they are a nightmare??

as I need the air box too I will have a look for a 500 setup, is there a specific carb number to look for.

Bryanj:
Correct, PD carbs are a total nightmare, especially if not cared for, you need any 500, except K3 which is rare in uk or a US 550 K0,1 or 2

McCabe-Thiele (Ted):

--- Quote from: Bryanj on August 06, 2024, 12:58:10 PM ---Correct, PD carbs are a total nightmare, especially if not cared for, you need any 500, except K3 which is rare in uk or a US 550 K0,1 or 2

--- End quote ---

I am confused as my 400 carbs are definitely 054A  I have ckecked them - did they use that number on the PD type or is it the manifolds that are for the PD type carbs here?

Might be worth checking the parts numbers for K1 & K2 that should be in the site downloads section.
My 500 has a K1 engine fitted with 550 type 069A carbs.

Nurse Julie:
Welcome to the forum.
Do you have a photo of your bike and is it a UK model or a USA import?

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