5.9L 24V Performance Discussion of 24 Valve 5.9 Liter Dodge Cummins Diesels with VP44 Injection Pumps Related To Performance And Longevity

Air Intake Mods

Thread Tools
 
Search this Thread
 
Old Jun 24, 2007 | 01:12 PM
  #21  
Whit's Avatar
Site Mascot
Joined: Mar 2007
Posts: 16,010
Likes: 940
From: Why-homing
Default

I agree that no real gain in pressure however here is the gains

Let's assume the factory airbox with its inlet behind the headlights draws in 70F air. A modified car with an exposed cone filter might breathe 110F warm air under the hood. Comparing the difference in air density with these two conditions reveals the warm air is 7.5% less dense than the cooler air and would consequently reduce engine power by a similar percentage - 158-hp vs 170-hp - a 12-hp reduction!
 
Reply
Old Jun 24, 2007 | 01:22 PM
  #22  
Dr. Evil's Avatar
BOMBARDIER
Joined: Mar 2007
Posts: 23,293
Likes: 1,322
From: North of You
Default

Originally Posted by jefff929
Maybe I'm not quite right

I want to make sure it is dryed and then oiled properly before putting it back on. In the mean time I wanted something to run so I got a BHAF. I wish there were other options. Having the filter dry and evenly distributed oil are issues. I wish there were a paper filter that I could slip an outerwears on while I'm fussing with the Uni. Am I being overly cautious?

Ok...I understand now.

Yeah, I doubt very much that there is a paper filter you can get to fit into the Scotty intake.

I would think after washing - drying would take the most time. After its dry you should be able to oil it and you should be good to go in no time.
 
Reply
Old Jun 24, 2007 | 01:26 PM
  #23  
Maj Easy's Avatar
Diesel Wrench
Joined: Mar 2007
Posts: 684
Likes: 67
From: Oklahoma
Default

Originally Posted by Whitmore
I agree that no real gain in pressure however here is the gains

Let's assume the factory airbox with its inlet behind the headlights draws in 70F air. A modified car with an exposed cone filter might breathe 110F warm air under the hood. Comparing the difference in air density with these two conditions reveals the warm air is 7.5% less dense than the cooler air and would consequently reduce engine power by a similar percentage - 158-hp vs 170-hp - a 12-hp reduction!
i still don't believe that an increase in air temperature is good for diesels..
years ago when my trailers were loaded heavier and they had less hp i thought they were a lot doggier in the hot days of summer.....
i yield to the pros on this stuff.
no arguement here......
 
Reply
Old Jun 24, 2007 | 01:54 PM
  #24  
Whit's Avatar
Site Mascot
Joined: Mar 2007
Posts: 16,010
Likes: 940
From: Why-homing
Default

I have read that inlet air temp of 70-90*f is best for economy.................I run a temp gauge reading from the air horn and I adjust my ram intake accordingly
 
Reply
Old Jun 24, 2007 | 02:26 PM
  #25  
sawyer45306's Avatar
Diesel Enthusiast
Joined: Mar 2007
Posts: 268
Likes: 23
From: New Knoxville Ohio
Default

I am by no means an expert, but I do recall from science class in HS that warmer air compresses differently than cold air, so common reasoning would say cooler air will have a differing effect on engine performance as compared to warmer air. And since warmer air is actually expanded apart more, density wise it should mean that it will take MORE warm air for the engine to use during combustion to achieve the same result as it would with cooler air.
 
Reply
Old Jun 24, 2007 | 02:44 PM
  #26  
Maj Easy's Avatar
Diesel Wrench
Joined: Mar 2007
Posts: 684
Likes: 67
From: Oklahoma
Default

Originally Posted by sawyer45306
I am by no means an expert, but I do recall from science class in HS that warmer air compresses differently than cold air, so common reasoning would say cooler air will have a differing effect on engine performance as compared to warmer air. And since warmer air is actually expanded apart more, density wise it should mean that it will take MORE warm air for the engine to use during combustion to achieve the same result as it would with cooler air.


Air/Fuel (A/F) Guage

If outside temperatures are low, your engine will run leaner than if the outside temperatures are high.

http://minimopar.knizefamily.net/perf/guages.html
 
Reply
Old Jun 25, 2007 | 07:36 AM
  #27  
Joe Diesel's Avatar
Diesel Fan
Joined: Mar 2007
Posts: 67
Likes: 0
From: Toronto
Default

Originally Posted by Wyatt Earp
the scotty system is a good system too bad they aren't made anymore. (at least i think)
yup Scotty is done he got out of the biz last year
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
carid
Diesel Bombers Sponsors
1
Nov 2, 2015 09:58 AM
willyam
Price Quote - Request A Price
1
May 19, 2015 10:20 AM
Project_5.9diesel
24 Valve 2nd Gen Dodge Cummins 98.5-02
4
Dec 11, 2014 09:41 PM
12vbomber
12 Valve 2nd Gen Dodge Cummins 94-98
7
Nov 4, 2014 10:04 PM
petew
Chevy/GMC 6.2L and 6.5L
5
Oct 25, 2014 09:29 PM




All times are GMT -5. The time now is 07:02 AM.