Installing dual carbs for the first time, Nevermind! Sticking with the Fuel Injection Options

[biosurfer1]

looks similar to the one I just setup and I agree, very easy to use and adjust. MUCH easier than the hex bar IMO.

http://www2.cip1.com/ProductDetails.asp?Pr...C31-129-941-400

[Root_Werks]

looks similar to the one I just setup and I agree, very easy to use and adjust. MUCH easier than the hex bar IMO.

http://www2.cip1.com/ProductDetails.asp?Pr...C31-129-941-400

That is very similar. Mine has cast parts for the pivot and arm that bolts onto the block. It's most likely an older kit NLA I'm guessing?

It's very simple, not many parts, not much that needs adjusting. Not sure why I don't see them on more engines?

The other part I like is the only adjustment you have to make is the initial cold, throttle closed distance for the two rods. Once that is set, you're good. As the engine heats up and expands, you leave a little play in the cable adjustment and you never had to worry about throttle plates opening up or linkage binding up.

I actually want to change mine up just a little so it uses factory ball and cup mounts.

Thanks for the link!

[sean_v8_914]

shzfdg

[gothspeed]

To the OP ......... I will take those horribel carbs off your hands ..... and give you money for them ...... (IMG:style_emoticons/default/smile.gif)

[ChrisFoley]

shzfdg

It just so happens that I have a special fixture for fabricating that throttle cable bracket.
I also have a fixture to re-index the lever arm on the bellcrank so it works at that angle.
(IMG:style_emoticons/default/welder.gif)

[biosurfer1]

Sean...can you take a picture of your return spring setup? I'm having trouble mounting mine so that it works good and does not get in the way of everything...

Thanks.

[arkitect]

Jrust,
What size carbs, just wondering for my project.

Dave

[computers4kids]

More of it, it's on my engine, haven't seen it used on anything before.

It works really nice, easy to adjust, can't find it new anywhere though.

Biosurfer's motor (Brett), who bought it from me, whom I bought it from Jamie, whom Jamie bought it from Craig boxstr and who he bought it from someoneone back east came with that linkage when it came to me. I really like the way it worked and it's simplicity. Not being a carb guy I had asked from numerous people for their opinions on the linkage and everyone told me to get rid of it. The common message was I would constantly have problems with keeping the carbs in sync once the motor warmed-up. Their reasoning is as our air cooled motors heat up, the parts expand and at different rates due to some parts running hotter than others, like the different heads. Since the bell crank is fixed, not floating, the expansion pulls differently on the different rods changing the pull on the webers. I heard this from several independent people. I have no idea if it's true or not, but it kind of made sense to me so I replaced the linkage with a CB kit. Never did start the engine. (IMG:style_emoticons/default/confused24.gif)

[Root_Werks]

More of it, it's on my engine, haven't seen it used on anything before.

It works really nice, easy to adjust, can't find it new anywhere though.

Biosurfer's motor (Brett), who bought it from me, whom I bought it from Jamie, whom Jamie bought it from Craig boxstr and who he bought it from someoneone back east came with that linkage when it came to me. I really like the way it worked and it's simplicity. Not being a carb guy I had asked from numerous people for their opinions on the linkage and everyone told me to get rid of it. The common message was I would constantly have problems with keeping the carbs in sync once the motor warmed-up. Their reasoning is as our air cooled motors heat up, the parts expand and at different rates due to some parts running hotter than others, like the different heads. Since the bell crank is fixed, not floating, the expansion pulls differently on the different rods changing the pull on the webers. I heard this from several independent people. I have no idea if it's true or not, but it kind of made sense to me so I replaced the linkage with a CB kit. Never did start the engine. (IMG:style_emoticons/default/confused24.gif)

Ah, but that's exactly why this set-up seems so good from a mechanical point of view. It doesn't care if the engine expands or contracts moving the carbs farther away or closer together. That's the beauty of it.

Kinda hard to explain, but when you see it in action, you can see it work.

Very simple.

Very easy to adjust (set up cold, not hot).

Fewer parts.

I could be totally wrong myself, but I've had quite a few years with carbs on 911 engines, bugs, 914's etc and after seeing this linkage, I like it best.