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Stop! Are You Installing your Velocity Stacks Correctly?

What can you remove from your bike if you want to install Velocity Stacks and increase performance/look of your bike.

 

The simple way to put this is you can pretty much get rid of everything that’s not coolant or fuel if its coolant or fuel you need it, it's important!  There’s a lot of air injection system stuff, repair valve, mostly EPA stuff that Honda has to put on the bike to be able to sell it to you! Thanks EPA! You can pretty much take everything out as long as it is not fuel or gas on single carb bikes- at least Honda Shadows. Many of them have coolant lines going to the carburetor, and this is a carb warming system, it is doesn't go into the carb there is no passages through the carb it literally comes out of the water jacket at the intake manifold and goes into a dead end of the carb there’s a little wide junction thing and then it goes back out behind the radiator.

 The logic behind this is to warm the carb, if you live in a really cool environment apparently this is a really good idea. Along time ago they had issues with carbs freezing because if a carb is attached to a bike with metal, anytime you rip fuel and air apart into an atomized mixture, you drop temperature you dont increase temperature so carbs would get so cold the they would ice over. The faster you go the faster the air is flowing through there you are getting colder and colder and the carb gets cold and and the carb starts to not function correctly. So the idea there is to keep the carb warm enough to prevent that. In theory yes it is great, have i ever seen this in real life? NOPE, never seen it. I’ve heard it from people who have really old Harley’s, with hanky ass old carbs yeah that’s probably gonna happen on older technology but now its not really a concern especially if you live in a pretty temperate climate. you really don’t need it the best way to get a rid of that is you can take the line from the intake manifold on a single carb bike there is gonna be brass nipple sticking up you can run the line from that- to the nipple on the radiator. That’s one way to do it.

You can also plug both of those nipples you can take a piece of tubing, you can take the one that was originally attached to them and hose clamp them on and find a bolt that Fits inside that hose so it’s got to screw in though I’d recommend putting a little like black RTV on the threads which also never use any RTV anywhere else on the bike ever ever ever and JB Weld should never be used anywhere in your motorcycle either if you find yourself reaching for those stop go get help yeah so you can find get a bolt and screw it into the hose and hose clamp that you have two hose clamps on the hose coming off the nipples that will plug the ports on the radiator as well the intake manifold. they are under pressure so you can’t just smush a vacuum plug on there if you do that’s just going to pop right off and you’ll have coolant everywhere so that’s basically all that you have to do to get rid of the coolant lines. if you’re trying to get rid of all the stuff for all the airlines and vacuum crap and valves. It can be pretty confusing if you have never touched anything like that before but you can basically rip all of it out if there’s coolant or fuel in it it needs to stay.

one other exception I remembered the auto fuel petcock which is on the Honda shadow VT 600  99 to 07 they recalled this because it was a vacuum operated diaphragm that shut off the fuel flow when you turn the bike off so if shut your  bike off and you have no more compression on your rear cylinder the idea was that the vacuum wouldn't hold the diaphragm open to allow fuel to pass-through in your carburetor kind of a good idea I guess, you know if the bike dies and goes down it’s probably not gonna leak gas anywhere but honestly I’ve seen enough bikes go down the issue again this is a government mandated bunch crap so the easiest way to get rid of that is just to take the AFP auto fuel petcock off the intake and run the fuel line from the tank to the carburetor. I do recommend putting a fuel filter in the line somewhere but a fuel filter is very important can save a lot of heart ache down the road. You are gonna be left with a small quarter inch vacuum hose that is going down to the rear cylinder and that needs to be plugged.  so I do offer an auto fuel petcock plug back in Port plug, it’s the proper depth the proper size and it will plug it properly so your bike will still run if you don’t plug that you will have serious issues.

 

To watch more on Velocity Stacks Installation watch the video below:

 

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