A Twist on the POD debate

[Craig54]

A Twist on the POD debate

http://www.youtube.com/watch?v=aBuvK3Z-eMU


I was playing around with this silly idea in my mind of making a manifold for all 4 cylinders and using 1 large carb... Like a car. Tuning would be fairly easy providing that you make all 4 runners equal length, which wouldn't be too difficult on a bike, since the intake ports are close together. If you could find a large enough carb, preferably CV, and side draft of course, it should work and run pretty good.

I remember seeing an Honda 750 4 in the 70's with 2 carbs on and it went like a rocket.
Cant remember the name of the carbs but think they were Italian.

[Silvermachine81]

Don't use the filter box and add a filter to the carb air box. At least on the 1100s they are seperate.

I was considering doing this to maintain a stock look while still providing better airflow.
I can no longer use the airbox due to frame bracing meaning the battery required raising and is now in the way.
Do you suggest a K&N or a Foam Unifilter?

[Tom R]

I remember seeing an Honda 750 4 in the 70's with 2 carbs on and it went like a rocket.
Cant remember the name of the carbs but think they were Italian.

I've seen those before and it always struck me as a good idea. It always amazes me how much carb we put on bikes compared to autos. I run a 600 cfm Autolite 4 BBL on the 351 in my boat. It has four 1.12" / 28.45 mm barrels and makes around 300 hp at 4800 rpm.
I read an article on head flow of the cb750's that stated that the 28 mm carbs it has are the restricting component and the head could support bigger carbs.
So 4 28.45 mm barrels can support 300 hp on a 351 v8,
but 4 28 mm carbs restrict the cb750 to only 67 hp - crankshaft numbers.

[JEEPRUSTY]

dell orto? Malossi?

[Big Rich]

What about a dual inlet k&n pod like this?

http://www.knfilters.com/search/product.aspx?Prod=RU-2970

That way cylinders 1 and 2 are getting the same air, and 3 and 4 are getting their own as well.

[Flaming Chainsaws]

What about a dual inlet k&n pod like this?

http://www.knfilters.com/search/product.aspx?Prod=RU-2970

That way cylinders 1 and 2 are getting the same air, and 3 and 4 are getting their own as well.

I wonder if that lunchbox will work on my GS450? It only says that it will fit a GS500.

[Hoosier Daddy]

What ever came of this?

[Tom R]

The selfish, every cylinder for itself nature of pods offends some. They have no regard for their fellow cylinders needs and the inherent balance brought to the system as a whole when available air is distributed evenly to all cylinders by a central orifice.