Ford releases fuel numbers for the new F-150

[DarkBlack]

It stopped just 1 foot sooner which would statically be meaningless. I have seen that during payload testing braking distance remain very similar with the loaded vehicles. I think the added traction has some cancelling effect. In addition that test would need to be run with the same wheels and tires. The Ram has 20 inch wheels vs 18 inches. Those two variables alone can make big impacts.

I don't think wheel diameter is the difference, but if it is the difference, then I guess the Ram comes with better wheels.

 

[DarkBlack]

Axle ratios in the attached. The 3.5 Eco has an axle ratio down to 3.15. Anyone driven one with that axle ratio?

http://blogs.cars.com/files/2015_ford_f150_tech_specs.pdf

You don't want a 3.15 ratio on a truck. It causes too much jacking effect.

 

[tcartwri]

Since I'm the guy who started the weep hole in the intercooler solution on the F150 forums, I'll split the difference with you: at idle there is insufficient volume to develop any notable pressure. However, the big idea is if the weep hole ever draws vacuum, and it does not. As a result, I wouldn't worry about a weep hole at the bottom of the intercooler unless one is crossing a flooded road or doing water crossings. In those conditions, a nipple should be installed, and a breather line popped on that vents at a higher place.

Hey, thanks for sharing that. Would be interesting to see the results as you are cruising..... don't kill the messenger. lol.

 

[MinnesotaEric]

Hey, thanks for sharing that. Would be interesting to see the results as you are cruising..... don't kill the messenger. lol.

So would I, but I don't have an eddy current dyno, and it is unfashionable to be leashed upside down to the front of one's truck so as to hold the camera in one hand and the rubber hose against a hole in the intercooler with the other while a buddy bangs down the road in the driver's seat.

 

[mikehaugen]

So would I, but I don't have an eddy current dyno, and it is unfashionable to be leashed upside down to the front of one's truck so as to hold the camera in one hand and the rubber hose against a hole in the intercooler with the other while a buddy bangs down the road in the driver's seat.

Is that Mad Max?

 

[jejeosborne]

I don't think wheel diameter is the difference, but if it is the difference, then I guess the Ram comes with better wheels.

Not sure what you mean by comes with better wheels. Maybe that was the case the way these two trucks were EQUIPPED. Ford offers 14 wheel options so I would bet the have the same size choice as well.
2015 Ford F-150 Appearance Guide Offers Many Choices - PickupTrucks.com News

 

[jejeosborne]

FWIW, back in 2011 when the EB engine was new in the F150, I was the guy who told Engineer Mike that condensation was a big problem in turbos and the tuning solution was to simply drill a hole at the bottom of the intercooler. The true solution is to move away from air to airy intercoolers to air to water intercoolers. I have a discussion about that on the F150 forums.

Why do you believe an air to water intercooler would correct condensation issues? I would think that anytime you drop the temperature of charge air, water would condense. The charge air is still gets transferring its heat to cooler metal in each of the two types. I agree air to water heat exchangers are better in preventing heat soak though.

 

[MinnesotaEric]

Why do you believe an air to water intercooler would correct condensation issues? I would think that anytime you drop the temperature of charge air, water would condense. The charge air is still gets transferring its heat to cooler metal in each of the two types. I agree air to water heat exchangers are better in preventing heat soak though.

Air to water intercoolers don't have the pressure drop that air to air intercoolers use to cool the intake charge. No pressure drop, no water condenses out. However, the issue, as the link points out is dumping the heat put into the water requiring yet another radiator.

Water to Air Vs Air to Air Intercooler | intercooler air water FMIC

 

[jejeosborne]

Air to water intercoolers don't have the pressure drop that air to air intercoolers use to cool the intake charge. No pressure drop, no water condenses out. However, the issue, as the link points out is dumping the heat put into the water requiring yet another radiator.

Water to Air Vs Air to Air Intercooler | intercooler air water FMIC

I agree they have better flow and lower pressure drop but I can't imagine the pressure drop is creating very much water. Temperature change is the source of the water.

I wouldn't want a water to air intercooler unless I was just wanting improved performance at the track by adding ice. I wish they would have mounted the intercooler above the intake like subaru does on many models. Simply drilling the hole solves the problem so adding a water system is just added unnecessary weight with more required maintenance.

I too have been a member at the F150 forum. I just realized you and Ford850 hang out there too. I joined that site back in 2011 but mainly just read and have made few posts. The crowd over there must include a lot of younger folks that have a few things to learn in many cases. TBN has a better demographic group I enjoy more.

 

[tcartwri]

VW has exactly the same problem with their Air-Air coolers. ( Jetta's and Golfs ) Our Passat has Water-Air >> No problems.