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Custom Dodge Ram Performance Mods - Engine - 5.9 Liter V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!


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  #21  
Old 03-18-2011, 08:35 PM
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Ok, I am up to 14.8 MPG according to the computer. It is going from 14.8 to 15.1 depending on wether I am taking off from a light or coasting to the next stop. Im gonna go with the lowest one of 14.8MPG.
For those of you keeping score, Im up 6 mpg from where I started (8.8 for the mathematically challenged!).
These last 2.4 came from the throttle body mod (cutting the fins off that stick up from the butterfly holes and polishing it smooth) and fixing my plenum leak with the Hughes plenum kit. I had 3 spots where the gasket was letting oil in to the intake.

I have taken off the resistor module to "install" the SCT program. I was pulling my 3000lb trailer and equipment and had plenty of power where I normally didnt. Mileage pulling the trailer went down to 12.1 (before mods it was at 6mpg)
I am very happy with my results!
If anyone needs help with any of these mods pm me and I will talk you through it.

Oh yeah, Im gonna go out to "test" the SCT tune on some country roads without the work trailer of course!
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  #22  
Old 03-18-2011, 11:42 PM
SilverBulletRam SilverBulletRam is offline
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CANT PM IM A NUBIE :-< Hey thanks a lot for the info...yea I already have an aftermarket K&N intake so ill probably just do the hughes plenum and maybe fastmann TB will that be about the same?

I have a question about your Electric fan set up...I would like to convert mine but want to figure out where the engine is freeing up. So does your belt still go around your fan pulley? Cuz I was talkin with a buddy and we both agree if its possible, can you get a shorter belt and bypass that pulley? wouldn't you get the real gains there if not then your motor is just losing about 5 lbs of metal fan to turn right?
Also what Amp Alternator would you recommend mine is either 90 or 120 Ill have to find out somehow...
Thanks for the advise
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  #23  
Old 03-19-2011, 08:02 AM
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okay, it wouldn't let me send you a PM because i don't have 25 post, but what is the Plenum repair?
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  #24  
Old 03-19-2011, 08:43 AM
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Quote:
Originally Posted by SilverBulletRam View Post
CANT PM IM A NUBIE :-< Hey thanks a lot for the info...yea I already have an aftermarket K&N intake so ill probably just do the hughes plenum and maybe fastmann TB will that be about the same?

I have a question about your Electric fan set up...I would like to convert mine but want to figure out where the engine is freeing up. So does your belt still go around your fan pulley? Cuz I was talkin with a buddy and we both agree if its possible, can you get a shorter belt and bypass that pulley? wouldn't you get the real gains there if not then your motor is just losing about 5 lbs of metal fan to turn right?
Also what Amp Alternator would you recommend mine is either 90 or 120 Ill have to find out somehow...
Thanks for the advise
That pulley does NOT come off, you only remove the fan from in front of it. Thats what I was talking about using the air hammer/chisel to start the nut turning. The engine is always trying to tighten the fan nut (between the fan and pulley) so it is a pain to break loose. from the front bumper, leaning into the engine bay use air chisel on the left side of the nut and chisel down to UNscrew the nut. DO NOT try to chisel the thing in half! Im just talking about using the air chisel as if you dont have a wrench. Mine worked so easy I thougt the whole thing spun so I hit it again and realized that the nut was spinning loose ( only about 1/8 of a turn ) but enough to be able to use my hands to spin the nut with fan the rest of the way off. What your left with is a pulley with about 3/4" of threads sticking out the middle of it. No belt removal necessary.http://www.ramforumz.com/picture.php...pictureid=1192
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  #25  
Old 03-19-2011, 08:55 AM
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Quote:
Originally Posted by Blueberry View Post
okay, it wouldn't let me send you a PM because i don't have 25 post, but what is the Plenum repair?
Our 5.9s have a two piece intake. The intake is aluminum (cast) with a steel pan with rubber gasket bolted to the underneath side. The two different metals expand and contract at different rates causing the rubber gasket to get pushed out (because of a sawing effect). Now you have oil getting sucked into your intake and you truck makes a pinging noise, uses oil, gets worse mpg, ect. Google Hughes plenum repair, its an aluminum plate to replace the steel one. This fixes what the Dodge engineers couldnt figure out/or overlooked. In hindsight, I should have just bought an air gap intake. But I will do that some other time. This link shows the bottom of my intake with the blown gasket.
http://www.ramforumz.com/picture.php...pictureid=1193
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  #26  
Old 03-19-2011, 11:15 AM
heavyzee heavyzee is offline
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has anyone tried removing the mechanical fan on a 4th gen ram???

any improvements??
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  #27  
Old 03-20-2011, 07:36 AM
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how long did it take you to do the Plenum repair?
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  #28  
Old 03-20-2011, 08:49 AM
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Does anyone know if it was the 318 or the 360 in that ram on the xtreme 4X4 episode? I would love to know that my 360 has the potential to get 16 mpg! Thanks
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  #29  
Old 03-20-2011, 08:59 AM
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Does anyone know if it was the 318 or the 360 in that ram on the xtreme 4X4 episode? I would love to know that my 360 has the potential to get 16 mpg! Thanks
I watched that episode, thats what started my MPG quest all over again. I looked for MPGs before but those things werent consistent (thats another story). It was a 360 that was on the show. The biggest gain was due to gearing and the freewheel hubs. Those are also the most expensive mods. The freewheel hubs he used cost $1500. The site didnt show them for 1/2 ton only 1 ton.
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Old 03-20-2011, 09:05 AM
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Quote:
Originally Posted by Blueberry View Post
how long did it take you to do the Plenum repair?
If you took it to a shop, the mechanic book says it pays 5 hours. It took me a total of probably 10 hours, but I have never done this and I did the TB mod also. Most of the time was in tear down and clean off old gaskets. That was one day. My Hughes kit showed up the next day and it only took 2 1/2 hours to get it back together. I actually felt like I was forgetting something! After double and tripple checking I fired it up and its been running great since.
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