I have a Banks twin ram intake horn. I was wondering why I dont see many of them on trucks throughout the forum. I was going to upgrade to the triple branch; Until I was told it would do no good without valve springs. When I upgrade the springs, should I upgrade retainers? Sorry for the bad angle on picture.

 

I think you don't see many of them because they are expensive! But a great unit from what I hear.

 

Because they're hell expensive, and don't do anything but look good.

 

If you sell the Twin Ram, I'm interested!


- Craig

 

They do make a difference in the air distribution to the #'s 1 and 6 cylinder..... so they must do something.....

I've been wondering the same thing (as per another thread) The cost is not really that much more then the performance single (widened ones) like the Hi-ram or AFE's intake, and I expect the twin is superior in flow, since it is superior in volume.

 

Banks Twin Ram is:

Not a good direct HP or Torque increase.

Not the best bang for your buck.

Not a dramatic improvement over a single unless you have a ton of fuel and/or twin turbos.

I have one and notice uniform cylinder pressures, uniform cylinder egt's, and less smoke=more power. I dont have twin turbos or a ton of fuel.

 

I want one just because I think they look cool.

 

12valveblack, how do you know you have even cylinder pressures? Are you measuring cylinder pressure? If so that's awesome!

 

Very cool looking. Is the inlet to the Twin Ram any larger than the stocker or an aftermarket manifold? If not I can't see that it would flow more but pressirized air could reach the rear of the engine faster. I like it!

 

Are you referring to uniform cylinder BOOST pressuere, in that the boost/airflow is better distributed throughout the engine? And what's the dramatic improvement with twins/fuel about?

I agree that they even out EGT's due to better distribution of the air. I agree that with the better distribution you will in turn get less smoke/more power, to a smal degree.

I do not agree that they will help with twins or lots of fuel. Most, if not all, trucks I've seen with twins have larger intake piping, intercoolers, etc. Or complete custom intake manifolds that require machining of the head. The Twin Ram is designed to be installled on an otherwise stock truck, and is the same size as stock piping/boots etc. A larger internal diameter is required to keep up with the volume of air, not something that splits the air.

I tried to build a Twin Ram deal for my 97, and the mild steel setup I put on the truck worked ok. I had to take the intake heaters off and start it with ether, and then had some sealing issues once I ran the truck hard a couple times. As far as performance, EGT's were lower, by about 100*. That, in in itself, is the only reason I'd decide put one on a truck. The Banks price is simply outrageous though. And as for being comparable in price to other larger intakes, no one, other than PureDieselPower.com, has a direct replacement for a 12 Valve, and that one lists as $250. ATS ArcFlow, GBE High Ram, CFM and so forth are listed as 24 Valve items.

 

Twin ram offers improved air distribution to the front and rear pistons. Thats why I like having one over an upgraded single horn.
Yes, I should have specified cylinder BOOST pressure and overall, better and more efficent airflow throughout the motor.
The small improvement in air distribution would take dramatic improvements such as twins and a ton of fuel to even notice, thats where I was goin with that, just an example.
This thing is too restrictive for big twins, how about my stock HX-35 feeding a S-400?

 

But what really is the difference from a 24V intake pipe to a 12V intake pipe? Most parts between the two are interchangeable (per Cummins Northeast parts department) since the 24V is simply a computer controlled B series. Some minor mods are needed for the intakes on a 12V, but isn't that simply because the mounting of the heater grids is slightly different in a 12V Vs a 24V? Those "performance" intakes either add volume to regain from the restrictions of the mounting bolt bosses, or add vanes to redirect air flow into the manifold box, or both. Neither of those options really seems to be as much of a performance increasing proposition as distributing the air in the manifold box better to me... am I wrong?
Obviously the 'holy grail' would be a ported cylinder head and an optimized manifold box before putting any intake manifold on.

 

justme, holy grail is just a phone call away to raymac! it wasn't cheap but i know i got the best!

 

Anybody have an extra intake plenum and manifold laying around? I've been wanting to make my own. I need some base dimensions and unfortunately for in this case, my truck is a daily driver.

- Craig

 

As far as interchangability, I am unsure. I have read in mag articles and such, that the 24 valve parts do work, with minor mods like you have stated.

You hit the nail on the head with the ported head and optimized manifold. The available intake horns do indeed make up for factory shortcomings with redirected airflow and different designs. The truly high powered rigs use completely different setups for that reason.

As for the twin ram and small twins, it will help distribute the air, but I still feel it's a bottle neck. It's still the square tubing, and still comes out of the same size inlet. I believe that if it were made of round tubing, and was packaged with a different intercooler and larger diameter piping(like a powerstroke setup from banks), then you would notice good differences and make it worthwhile. That's my .02 on the subject after trying to build something like the Twin Ram. I am soon to sell off my trucks and be overvalved, so I can't say much more.