On the carburetor models of the Bonneville series, in order to access the jets and switch them out some disassembly is required. Does the seal under the cover need to be replaced each time it’s taken apart or only if it leaks or has damage?
Carburetor Jet Access Question
- Thread starter sikatri
- Start date
Help Support Triumph Motorcycle Forum:
speedrattle
Well-Known Member
bonnevilles have had a number of very different carburetors over the years.
what kind of carburetor is it?
what kind of carburetor is it?
The manual says 2 Keihin CVK 36.
I’m suspecting at minimum I need two float bowl seals. Anything else? Float bowl is the “cover” I noted. Sorry for the imprecise wording above. I don’t think I need a full rebuild kit.
speedrattle
Well-Known Member
generally if all you want to do is drop the bowl to access the jets or float needle, you wont need anything. modern carburetors are pretty robust in their o-rings and gaskets, ifv they arent too old.
maybe "carburetor" and "modern" dont even go together these days.
anyway you will likely need nothing, because the o-rings and gaskets typically fit into grooves and the metal parts come away with gentle tapping without damaging them.
however, you can buy a "service kit " for a lot less miney than a "rebuild kit." it will have the most often needed gaskets and o-rings. im lookin at one in the states that has a bowl gasket, a pilot screw and spring, a float neede, and an o-ring.
https://www.dellortoshop.com/conten...rvice_kit_carburettor_shop_20200525115505.jpg
thats likely all you need. what are planning with the jets?
maybe "carburetor" and "modern" dont even go together these days.
anyway you will likely need nothing, because the o-rings and gaskets typically fit into grooves and the metal parts come away with gentle tapping without damaging them.
however, you can buy a "service kit " for a lot less miney than a "rebuild kit." it will have the most often needed gaskets and o-rings. im lookin at one in the states that has a bowl gasket, a pilot screw and spring, a float neede, and an o-ring.
https://www.dellortoshop.com/conten...rvice_kit_carburettor_shop_20200525115505.jpg
thats likely all you need. what are planning with the jets?
I’m going to delete the current airbox and replace it with British Customs airbox delete kit which comes with a variety of jets. I have some type of more free flow exhaust, not sure exactly whose it is. It was on the motorcycle when I bought it. I also don’t know if anyone upgraded the jets when the exhaust was changed. So after I install the kit, I need to drain the carburetor bowls and take a look.
speedrattle
Well-Known Member
pay close attention to your jetting. pod filters on CV carbs are sometimes hard to jet. you have an advantage because british customs has done the research.
this generic keihin CV looks like you can remove the needle jet holder, needle jet, and main jet all at once from the center drain hole without removing the bowl, 12, 13, and 14
if it has a center drain hole?
this generic keihin CV looks like you can remove the needle jet holder, needle jet, and main jet all at once from the center drain hole without removing the bowl, 12, 13, and 14
if it has a center drain hole?
Attachments
Last edited:
It has a drain of some sort. I’ll look into it. Thanks for the comments. It’ll be a bit before I get to it. I’m side tracked with polishing a brushed fender to match a polished rear.
unclescratch
Member
If you expect to be in and out of those carbs a few times, you might consider replacing the factory phillips head screws with hex head that are easier to deal with.
