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jeffster
GenIII
 
4/08/2001
20:14:44
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 Subject: Why is cool better!!
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Message:
We all know cool air intake is superior. Does anyone know why cool air will give more power than warmer air? What are the properties of cool air?
Waiting for my 2001 black 4.7 RC Sport 5 speed 3:92 limited slip
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Mark
Forum Moderator
4/08/2001
20:28:15
| RE: Why is cool better!!
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Message:
Cold air is more dense and contains more oxygen per volume.
-Mark
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Wayne
GenIII
4/08/2001
21:03:58
| RE: Why is cool better!!
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Message:
Jeffster, I'd tell ya' but you made fun of my ancient dynosaur motor in another thread. You hurt my feelings so I'm going to have Mpjunkie answer this one for you. :-)
Besides, Mark's answer is the short sweet version.
Wayne Van Metre
'99 CC SLT 5.2/auto/3.90 anti spin
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Bernd
GenIII
4/08/2001
21:28:20
| RE: Why is cool better!!
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Message:
Exactly what Mark said. Cooler air, denser charge, more oxygen (more "bang").
Bernd D. Ratsch
1997 Dodge Dakota SLT
Supercharged w/Nitrous
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jeffster
GenIII
4/08/2001
21:39:18
| RE: Why is cool better!!
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Message:
Sorry Wayne. It's just I feel that the 5.9's days are coming to an end much the way the 5.2 did. The 5.9 has a lot more torque and is an almost destructible engine. If hardcore pulling power with no concern about fuel economy is your agenda the certaily the 5.9 has a place. If you are a poor working stiff like me then you will really appreciate the better gas mileage the 4.7 offers.
Thanks for the resopse on the cold air issue.
Waiting for my 2001 black 4.7 RC Sport 5 speed 3:92 limited slip
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Wayne
GenIII
4/09/2001
00:11:28
| RE: Why is cool better!!
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Message:
Hey Jeffster, I'm just messing with ya'. I'm well aware of the new technology. The 4.7's have impressed me. I just wish they would have made it bigger. 5 to 5.5 liter with equivalent raise in hp would have made more sense to me.
Keep on truckin'. :-)
Wayne Van Metre
'99 CC SLT 5.2/auto/3.90 anti spin
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RonW
*GenI*
4/09/2001
19:46:38
| RE: Why is cool better!!
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Message:
There's supposed to be a 5.7 on the way in a couple years.
Ron
00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
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HEMI
Unregistered
4/10/2001
01:05:22
| RE: Why is cool better!!
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Message:
Hey Ron,
A 5.7 MOPAR? That would make sense with the old 354 Hemi from the 50's! When and where did you hear that? It sounds good! Did you hear about any HP or torque ratings? I read in Hot Rod last year that the higher ups at Chrysler have or had plans to bring back the 354 Hemi in the full-size cars with it coming to Dakotas in 2003. Keeping my fingers crossed! HEMI
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Brad
GenIII
4/10/2001
08:19:46
| RE: Why is cool better!!
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Message:
That's the right size but they are pretty tight lipped about figures. The 300hemic concept had 353HP and 353TQ from 353 cubes. i have heard rumours in the 320hp range for the 5.7 and a 6.1L to come later with 350HP. Have to look back in my magazines to verify.
97 5.2L
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RONN
Dodge Dakota
11/19/2001
20:50:00
| 354 hemi trans
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Message:
need to know if the four speed I have can be swapped with any other tranny that will bolt to my block.(354 vt 488) I think the truck was a 58 Dodge K dump truck. It had a 4 speed with a pto. Is this tranny good for a street rod.(32 plymouth) I read about adapter plates but would rather have a tranny from the 50s or 60s. what kind of vehical would it have to come from? Would it be cheaper for an adapter and a newer tranny
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RONN
Dodge Dakota
11/19/2001
20:53:12
| 354 hemi trans
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Message:
need to know if the four speed I have can be swapped with any other tranny that will bolt to my block.(354 vt 488) I think the truck was a 58 Dodge K dump truck. It had a 4 speed with a pto. Is this tranny good for a street rod.(32 plymouth) I read about adapter plates but would rather have a tranny from the 50s or 60s. what kind of vehical would it have to come from? Would it be cheaper for an adapter and a newer tranny
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loki
Dodge Dakota
11/20/2001
01:41:29
| RE: Why is cool better!!
IP: Logged
Message:
In response the the original question-here is the formula for calculating air density.--
d=1.325(Pb/T)
Where:
d=air density in pounds per cubic foot
1.325=constant
Pb=barometric pressure in inches of mercury
T=absolute temperature (air temperature in degrees Fahrenheit plus 460)
/ = division function
d=1.325(Pb/T)
More than you really wanted to know ;)
Jon
1999 CC R/T
K&N 50mmF&B
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loki
Dodge Dakota
11/20/2001
01:51:20
| RE: Why is cool better!!
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Message:
Air is less dense as temperature and altitude increase. Therefore, if the air is different from standard conditions (70 F and 0.075 lbs/cf at 29.92 inches Hg barometric pressure), because of temperature and/or altitude, then the density is also changed.
Just a little more info.
Jon
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Dr Q
DakotaEnthusiast
11/20/2001
08:21:37
| RE: Why is cool better!!
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Message:
Isn't absolute temp. measured in kelvins? I haven't checked the constant, does that translate to fahrenheit?
Dr.Q
'01 Patriot Blue SLT RC 4.7 5sp 3.92 pegleg
0-60 @ 6.20sec.
1/4mi @ 14.75@97.1
Home Brew Airbox
K&N Drop In
Lakewood Traction Bars
Dremel TB Port and Polish
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Dr Q
DakotaEnthusiast
11/20/2001
09:22:16
| RE: Why is cool better!!
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Message:
I just checked you're right. I just have never seen the gas laws worked out in the english system. But, overall it is better to be in Death Valley on a cool day than Denver on a hot day.
Dr.Q
'01 Patriot Blue SLT RC 4.7 5sp 3.92 pegleg
0-60 @ 6.20sec.
1/4mi @ 14.75@97.1
Home Brew Airbox
K&N Drop In
Lakewood Traction Bars
Dremel TB Port and Polish
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Brad
Dodge Dakota
11/20/2001
18:54:02
| RE: Why is cool better!!
IP: Logged
Message:
In response to the 5.7 Hemi. Should check out car-truck.com. Has a lot of info on the new engine. Going to be 345 ci which is on the small side of 5.7L. 330 hp and 360 tq. The 6.1 is supposedly going to be in the 350 hp range. The best part is it sounds like the 5.7L will definitely be in the redesigned daks!!
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