Audiovoxx (Murphs kit) Cruise Install - Vac line question

[txtriathlete]

Where do the vacuum lines tie into the carbs? Following the shoptalk "how to" but there is no discussion of where to connect the lines.

[The emperor has no clothes]

On the intake manifolds.

[John Schmidt]

On the intake manifolds.

Little tubes sticking out in back of the carb intakes, the usable ones will just have a small rubber cap and spring clip on them.

[semo97]

if you have de-smoged you will have 5 lines to use if you have also went with a non vacuum on off gas valve like a pingel you will have 6 lines you can use. When I did my IS I used all of them. I went three into one for each side then two into one that went to the canister.

[John Schmidt]

I used to have all six feeding the vacuum reservoir, seemed like a lot of hoses to me which means vacuum leaks sooner or later. A couple years ago I changed over to using just one from each side and the CC holds fine. Some riders don't even use a reservoir and have good response.

[txtriathlete]

Good info, thanks. Went ahead and did the desmog while I had it apart and got familiar with all the hoses etc. in there. using the "How To" in Shop talk so setting up as 5 into the reservoir. We will see how it holds up. I can always cut that stuff out later if it gives me a problem.

Related but different question - looks like there are carb overflow hoses attached to the bottom of the carbs that manifold together and route to the back of the engine. Are these necessary? Seems like a lot of plumbing. I can't see that they do anything except maybe drain?

[The emperor has no clothes]

Good info, thanks. Went ahead and did the desmog while I had it apart and got familiar with all the hoses etc. in there. using the "How To" in Shop talk so setting up as 5 into the reservoir. We will see how it holds up. I can always cut that stuff out later if it gives me a problem.

Related but different question - looks like there are carb overflow hoses attached to the bottom of the carbs that manifold together and route to the back of the engine. Are these necessary? Seems like a lot of plumbing. I can't see that they do anything except maybe drain?

Yes, they are bowl drain lines. I removed them from my Standard.