Is 5th gear gutless uphill with every 4.0?

[Kona]

Unless you have it floored, it won't burn more fuel. If you have it floored in the higher gear, it may burn less.

Floored in 5th, 3/4 ish in 4th

 

[MAKG]

Then I'd suggest trying it. These engines really do run better at the moderate RPMs we have been discussing.

 

[Will]

Ahhhh... I remember getting an arguement long ago when I told someone that the
very defination of Torque and horsepower peak could most simply be expresses in
terms of airflow....

Was I the other party arguing it was the amount of fuel burned per combustion event?

I have a diesel so I think about fuel, not air. It always has more air than you need. I watch the EGT and when the turbine inlet gets to 1,000F I downshift and it immediately drops 200F. So you know the governor turned the fuel down a bunch when the tranny took over 30% of the torque production.

 

[Kona]

That is why I kept it to 2,800 rpm in 4th.

 

[AllanD]

Was I the other party arguing it was the amount of fuel burned per combustion event?

I have a diesel so I think about fuel, not air. It always has more air than you need. I watch the EGT and when the turbine inlet gets to 1,000F I downshift and it immediately drops 200F. So you know the governor turned the fuel down a bunch when the tranny took over 30% of the torque production.

Naaa... it was someone else and their arguments were at best "metaphysical" rather than scientific.

On a gas engine you only add what fuel you can to whatever air you can get.

On a diesel there typically isn't a limit on air, so you simply vary the fuel for the power you want. though someone should told the engineers who
designed my Nissan SD25 (it had a throttle plate...?)

If you tried to run a gasoline engine the way diesels are
traditionally controlled you'd either break it or melt it.

Though smart engineers will be proud as hell when the
first GDI-multifuel engines hit the showrooms in another
year or two.

AD

 

[Will]

Though smart engineers will be proud as hell when the
first GDI-multifuel engines hit the showrooms in another
year or two.

AD

You mean like THIS?

 

[AllanD]

No, not a car...

I'm refering to the 3.5liter DOHC V6 slated to REPLACE the 4.0SOHC cologne engine.

at introduction it will be a conventional gasoline EFI engine
Slated for later introduction (or if initial introduction is delayed)
are both a "variable geometry intake" and Gasoline direct injection.

Ford has already mentioned plans for a Gasoline/Gasohol/Butanol
multi-fuel capability for the engine.

Frankly I think Butanol is the only alternative fuel that makes
any sense at all, because it is made from waste, not crops specifically grown for their oil content (Bio-Diesel) or increasing food prices (using Corn to make Fuel instead of food)

And even if you use corn to make ethanol or soybeans to make
bio-D respectively, the waste from either process can
still be used to make butanol.

What amuses me most about the 3.5DOHC engine?
all the yahoos making aftermarket "Stuff" for the 4.0SOHC
because it is being used in the mustang, but the plant that
makes the 4.0SOHC engines is schedueled to re-tool for the
new engine engines

Yet another bite-in-the-ass for the 6cyl aftermarket...

AD

 

[85_Ranger4x4]

Isn't that the same 3.5 that is in the Edge? 265hp isn't anything to shake a stick at, esp for a small V-6.

 

[Totalled]

I did the cascade loop trip at the beginning of the month in my explorer. I was very impressed at how well it pulled 5th gear on hills. I only had to down shift a few times, mostly north cascades and Stevens passes. It averaged 19mpg on the trip too.

http://maps.google.com/maps?f=d&hl=...054,-120.547485&spn=1.641182,3.735352&t=h&z=8

 

[thesoundmaster]

I run my 4.0 over 4000 rpm quite alot here cause the mountain passes range from 9000 ft to 11900 ft (I live at 6000 ft) with grades up to 9%, most long grades are 4-6% though. 5th gear is useless in those places if you wanna keep up with traffic.

I second that, though I have the SOHC not the old Push Rod. I'll go over Floyd Hill on I-70 at 4500 RPMS doing a consistant 70 MPH. Do I drive it like that in the city? No. I generally keep it low in the city. Going up 24 on the way out to Buena Vista, I'll wrap it to 4000-5000 from time to time only for short amounts of time. Now doing this to the 4.0 will hurt it...

http://www.youtube.com/watch?v=WOZWB5dUBus

As far as the 5th gear being gutless, depends on where I'm at and how fast I'm going.

 

[Drg racr]

Every 4.0L I've driven is sluggish. The only time I got my 4.0L to rev is when I removed the air box and plumbing. It jumped right up to the redline, but then it threw all sorts of codes. Fun!!

 

[rickcdewitt]

So yeah, even loveland pass wouldn't present a challenge even to a 160hp thunderbird turbocoupe, it'll probably make that long climb up US-6 to the scenic overlook like a homesick angel racing home from hell.

while a 5.0 Mustang would be left wheezing behind you.

At high elevation there is no ammount of displacement that'll keep up with even modest forced induction.


AD

thats the idea behind the "normalizing" supercharger on the p-51 mustangs.i think they increased flow at altitude to keep power levels up(1000 horses or so?.
Kona-drive a buddies 2.9l truck for a few days and you'll be very happy with the 4.0!

 

[Hahnsb2]

Every 4.0L I've driven is sluggish. The only time I got my 4.0L to rev is when I removed the air box and plumbing. It jumped right up to the redline, but then it threw all sorts of codes. Fun!!

This one time I put a K&N in, I gained like 123897973426MPHs....

 

[Cooke15]

whats your gearing?

 

[almostclueless]

This one time I put a K&N in, I gained like 123897973426MPHs....

heh