4 into 1 air intake

Has anyone ever heard of doing this I am thinking of trying to make one and was wanting to know if anyone has done this? can you see any flaws why this might not be a good idea?

 

nice concept I've done away with my airbox xj700. got some individual pods from ebay(30$) . runs good even upped my main jet. If you tinker like I do the airbox just slowed me down- now I can pull my carbs off 10 minutes.

 

nice I would try pods instead

 

I have looked at the pod's but I just cant get past how mean it looks having that one bigger cone on the side. Gives a bike that old school do whatever works best race look.

 

I did pretty much the same as the drawing but it didn't work out for me. Mine had too much restriction and would flood the motor out with fuel at wot, I never did try it though looking back with my stock main it was a +4 I was running.

 

There's a few Members who have taken that design off the page and are already experimenting with how the reduced Air Intake helps overcome the Tuning issues prevalent for individual Pods.

Reduced Air Intake is only part of the problem.

The Carbs STILL NEED:
Intake Air Flow shaped and accelerated.
(Velocity Stack principle.)
MAIN and PILOT Air vent orifice vented from a Pressure Reduction at the Inlet.

 

Just for ease of description I'll assume we are looking at it bolted onto the carbs and we are sitting on the seat, making the left carb #1 and the right carb #4.
I see a few things that stick out to me as far as tuning it would go. First, you will only have one opening to bring air into and your right leg will be right in front of it.
Second, I would think that just from the fluid dynamics of air going into it that carb #1 would run rich waiting for all the air to make its way down from the carb #4 area which would probably be running lean from the influx of air.
one of the reasons the stock air filter inlets from the top is to quasi equalize pressure and airflow for all 4 carbs and your design, while cool looking will not be equal at all 4 carbs. Think of the number one issue with actually using individual pods...disturbed airflow.
Maybe one with the "forcewinder" style intake on EACH side would work more closely to what these bikes like for intake and still accomplish your look.

 

OK that being said and making good sense what about this

 

the 4 into 2 i have the k@n filters are between 1and 2 and the other is between 3 and 4 sits back where the old airbox was that way you have even flow to all the carbs even tho they are connected in the middle. the way your set up is the inner two and the outer 2 have different pulses of air i would think it might make it much more difficult to sync

 

Yeah the plans i have are to modify the stock airbox myself, plan to cut the part off the houses the filter flush and put a plate in its place with a single pod for easy removal, because the front part acts as a chamber which allows air to go into each carb evenly. I bet my idea could even be used on a hardtail setup, more function over form.

 

The first pic is exactly what I have done on my bike.

 

I have seen a pic of a bike on this site of the first pic but the filter pointed to the back, the guy built custom hot rods. White tube as i remember with a single filter on the right side. Bike was Bobbed I believe.

 

Hey, Hellbilly:

Let me see you make a nifty drawing of what an Air Pod would look like with a Airbox Boot hidden inside.

Make the Airbox Boot extend 1/2 -to- 2/3 of the way inside.
Leave a bit of the curl on the end of the inserted part.

If you want to take it one step further, ...
Have the Outer Filter Part rotate a perforated cylinder of Sheet Metal over a stationary cylinder of Sheet Metal to be able to manually regulate the Intake Flow.

Call it the: Pod-O-Matic

 

so would that be 1 pod per carb

 

Yeah.

I'm thinking a Multi-function Pod would be a great help.

It NEEDS the Center Velocity Stack.
It NEEDS the Variable Flow.

If you want to go for the Full Monte, ... an Air Jet Vent Bypass.
(Although, a bypass might be able to be drilled.)