9+ MPG Class 8 5 Axel Trucks with Trailers

Dice that difference in weight makes a huge difference in mpg, even a bad driver can get 8.5 with the right set up with such a light load.

and for Randall Corlee, not only he is empty 50% of his loads, he is also pulling a tube down the road, I have seen fuel hauling combination that are lighter than some tractors, and when you get going there's hardly any drag.

There's is not magic when it comes to mpg, there's always a reason not stated why some one is making a humongous difference compared to the rest, I once had the most efficient truck around here, but I wasn't going to break any speed record even if tried, and then when it was time to sell that truck, it took another maniac like me that had the right job that required that specific truck, but most people will not care about my truck with such small engine that was only capable of 60 mph loaded, must of us want power instead.

 

Now that is redneck trucking'! It ought to hold up real well on the gravel roads I go down weekly. Especially after a hard rain.

 

I never seemed to have a problem getting air with mine, but its a FLD. I'm not saying the extra would hurt.

I considered and had it figured out in my head of how to run dual intake but you'd have to run the piping up the back of the cab and under it. You could tuck the air cleaners in behind the skirts.

 

It begs the question why anyone hasn't come up with a ram air hood design like performance cars. Not sure how it would plumb up but it wouldn't be hard, in theory, to cut out a section and fasten a scoop on the hood. Especially with aero hoods. The air flow running across the top and hitting the scoop would provide more than enough air.

 

Ram air doesn't work in forced induction applications. Your turbo is forcing more air in your engine than a ram air scoop can allow in. That's why you only see ram air in naturally aspirated engines not the forced inductions ones with super charges and turbos.

Only way that is helping is that it's helping get cooler air in then the air it would be sucking in from original location if you'd use or be able to protect those pipes from getting heat soaked.

Dice what I think would work better than all that plumbing you ran is to use the stock location what volvos use to get the fresh air in just put a duck bill lip on it to make it catch the air. Volvos have those 2 intake vents on side of good. All that plumbing you made just holds heat and gets heat soaked then your just forcing hot air in.

 

But isn't the tubing shown in those photos essentially doing the same as a scoop on the hood would do? Allowing cool air and more of it in basically a direct shot to the filter housing? Not talking about a ram air kind of idea, just allowing a lot of cool air direct access. Except for the design difference, the Coronado is basically doing this, only with side ports instead of a scoop on top. Cabovers used to do something similar with scoops mounted high above the cab on the rear. Based on the constraints of space in something like a Columbia, it would seem a scoop on the hood would be an interesting solution. Whether it would be a doable idea is something else.

 

Many trucks do. Kw t600 have them And t800 depends if they have breathers on or not. A lot of aero dynamic trucks got rid of this cause it creates drag. Some even got rid of the sun visor. Ram air is more toward power hunt not the mpg hunt on the view of drag it creates vs hp it makes.

With extra pipeing it creates room for heat soaking.