Performance is weather related??

[JLEONARD]

Am I the only one who has noticed that our trucks love damp,cold, crappy weather?

Yesterday we had one of those cold (40 *F), misty, raw "typical" New England November days.

I hate this weather, but the truck loved it! Ate it up!

Saw 30 psi boost at about 75 mph up a grade with no load! :--)

And the gage just snapped up to 30... no waitin' around.

On that same hill I normally see 28/29 psi at 85... . with the last few psi comming on slowly.

Must be the "water injection" system giving me that extra umph!

You guys in the NW... is that your secret?

East Coast Jay.

 

[fox]

Cool air is better air , just ask a drag racer!

Mine does the same and she hates the hot dry air.

You may notice the turbo is faster spooling in the cool days.

 

[Greenleaf]

Ditto Ditto Ditto

The pulling tractor makes more power/runs stronger/better on those September nights as compared to mid July.



I have not had my truck long enough to witness this in my CTD and will not any time soon. She is put away for a long winter's nap



Scott

 

[jbolt]

Originally posted by Greenleaf

She is put away for a long winter's nap



Scott

Scott,



That's why they made a "W" model. CTD fun all year round.



Jay

 

[Philip]

That's why they made a "W" model. CTD fun all year round.

Oo. Oo. Oo. oh yea

 

[Greenleaf]

OK, Cut it out.



I once used my '97 Ford 4X4 Powerjoke as a snowmobile But, I've matured since then... .

 

[paccool]

The cooler air is more dense than hot air. easier for the turbo to pack the CFM's into the engine. Thats why there is an intercooler to cool down the air from the turbo before it gets into the engine.



BUT--- there is a point that the air can get too cold and not support combustion of the fuel mix very well, thus the inlet air heater requirement.





I hope someone else can jump in here and explain it better.



Stan

 

[hdm48]

I won't get all scientific and throw a bunch of formulas at you guys but the colder air IS more dense and the oxygen molicules are bunched up closer together. It's not the air temp that your trucks likes so much as the more oxygen.

When I tune one of my toys I need to re-jet it up to three times in one day just to keep it in the power and not melt. It all depends on the race track and the weather.

And yes, my rig likes the cold weather also. But it's a race to see a power gain before they start using the winter fuel.

I think it's a plot to keep us from going faster.





Dave

 

[sparks57]

No kidding, my truck runs like a stripped ape when it's cool outside because of the air density.



But when it gets up into the 90's and above 100*, then my truck is COMPLETELY GUTLESS!!!



I am going to fool around with my pump a little and try to solve that problem.

 

[MMiller]

When operating a tractor all day, with constant load, in the spring, when evening falls you will notice that the tractor pulls noticably better after dark, when the air starts to cool, my truck does this too.



Kinda a double edged sword tho with a bombed truck. I can't get mine to hook on damp streets at ALL. I am scared of winter comming, this will be the first winter with the bosch 185's! Might have to back the fuel down a little. Well maybe not



Michael