MPG Question. - Diesel Truck Forum - TheDieselGarage.com
Thread Details Posted by Renegade3064, this thread has received 13 replies and been viewed 5239 times.

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 14 (permalink) Old 12-06-2011, 05:03 PM Thread Starter
Junior Member
 
Renegade3064's Avatar
 
Join Date: Dec 2011
Location: Davenport, FL
Posts: 10
Points: 13,134
Thanks: 0
Thanked 0 Times in 0 Posts
Garage
MPG Question.

Contemplating a 12 Valve swap. What kind of highway MPG's (70mph) can I expect from a 12 Valve in a 2000 F250 4x4 Crew Cab 8' Bed with 3.55 gears and an NV4500? This would be my ideal application, using the stock tire size and stock engine besides maybe a straight pipe turbo back 4" exhaust and BHAF. Any input would be greatly appreciated.
Renegade3064 is offline  
Sponsored Links
Advertisement
 
post #2 of 14 (permalink) Old 12-06-2011, 10:29 PM
Junior Member
 
Join Date: Oct 2011
Location: asheville nc
Posts: 40
Points: 14,557
Thanks: 0
Thanked 0 Times in 0 Posts
from my research anywhere from 15-22 depending on the mods done,your driving habits and the terrain you drove
chasewhite05 is offline  
post #3 of 14 (permalink) Old 12-07-2011, 12:40 PM Thread Starter
Junior Member
Threadstarter
 
Renegade3064's Avatar
 
Join Date: Dec 2011
Location: Davenport, FL
Posts: 10
Points: 13,134
Thanks: 0
Thanked 0 Times in 0 Posts
Garage
Destroked thinks mid twenties with this setup. Just wanted to see what peoples real world experiences were. I drive mostly highway and like I said I'd like to keep it mostly stock besides intake and exhaust, but we all know how long that lasts

Anyone else?

Joe
Renegade3064 is offline  
post #4 of 14 (permalink) Old 12-07-2011, 03:15 PM
Junior Member
 
Join Date: Oct 2011
Location: asheville nc
Posts: 40
Points: 14,557
Thanks: 0
Thanked 0 Times in 0 Posts
a 4 inch exhaust will def help keeping smaller tires will too(stock size) but i still doubt that you would get mid 20s unless your truck was a single cab 2wd.not trying to be a jerk but i plan to do this with my v10 cc/sb fx-4 and it wieghts about 8k.not to mention your added more wieght with the cummins,ive read they are a good 300 pounds more than a ps 7.3. add on the bigger gas tank and the extra 2 feet of bed space that you have it will add up.there is a 4 cylinder cummins that will net you that though.same thing as the 6bt just 2 less cylinders
chasewhite05 is offline  
post #5 of 14 (permalink) Old 12-07-2011, 04:53 PM Thread Starter
Junior Member
Threadstarter
 
Renegade3064's Avatar
 
Join Date: Dec 2011
Location: Davenport, FL
Posts: 10
Points: 13,134
Thanks: 0
Thanked 0 Times in 0 Posts
Garage
Thanks Im well aware of the 4bt I just really want the 6bt. Call me crazy but ive been able to find more 6bt's and at a cheaper price than 4bt's. I know the whole point of this thread was MPG's but I still want some power too. Everyone keeps saying a 4bt will be enough power but im not convinced. Yes I know they haul around delivery vans and such but have you ever driven one of those things? If I was doing a Ranger or half ton then yes I would entertain a 4bt, but for a 3/4 ton truck, I really feel the dirty dozen is the way to go. Maybe I'm wrong? Plus I think it will be easier to get parts later on if im using a dodge 12 valve, dodge clutch, dodge trans, etc. Even though I know alot of parts are interchangable. Im assuming to make the same power as a 6bt with a 4bt i'd have to increase fueling, which would decrease economy. A modded 4bt to achieve the same power as a stock 6bt would probably get around the same economy right?
Renegade3064 is offline  
post #6 of 14 (permalink) Old 12-07-2011, 05:00 PM
Junior Member
 
Join Date: Oct 2011
Location: asheville nc
Posts: 40
Points: 14,557
Thanks: 0
Thanked 0 Times in 0 Posts
i agree with the 6bt as a better option but i have seen a guy running a 4bt in his superduty for mpg and he still tows with it but towing is the only time he reallyfeels a minor lack in power.he says hes getting anywhere from 25 and up which is your goal mpg wise so thats the only reason i suggested it.i myself decided to go with th 6bt though because the power/mpg plus i plan to mod mine to about 500 hp or so
chasewhite05 is offline  
post #7 of 14 (permalink) Old 12-07-2011, 05:10 PM Thread Starter
Junior Member
Threadstarter
 
Renegade3064's Avatar
 
Join Date: Dec 2011
Location: Davenport, FL
Posts: 10
Points: 13,134
Thanks: 0
Thanked 0 Times in 0 Posts
Garage
Im sure a 4bt would get the mileage I want and work just fine. I rarely tow anything. I just know i'll kick myself for not doing a 6bt if I ever want to add a bunch of power down the road like your saying. My only solution... build two trucks, one for MPG and one for power! Haha I wish I had the cash for that. So you think 20 mpg would be feasable with the truck I mentioned above and a stock 6bt? I'd be happy with that.
Renegade3064 is offline  
post #8 of 14 (permalink) Old 12-07-2011, 07:20 PM
Junior Member
 
Join Date: Oct 2011
Location: asheville nc
Posts: 40
Points: 14,557
Thanks: 0
Thanked 0 Times in 0 Posts
i think its easily attainable with that setup considering you keep your foot out of it.most guys ive talked to say they average about 18-20 regularly just cruising around.it will be hard though cause the low end grunt the cummins makes.are you doing the swap yourself or having it installed at a shop?
chasewhite05 is offline  
post #9 of 14 (permalink) Old 12-07-2011, 11:24 PM Thread Starter
Junior Member
Threadstarter
 
Renegade3064's Avatar
 
Join Date: Dec 2011
Location: Davenport, FL
Posts: 10
Points: 13,134
Thanks: 0
Thanked 0 Times in 0 Posts
Garage
I'll be doing it all myself with the help of fellow co-workers. Im a tech at a Mercedes-Benz dealer so I'll have all the equipment and tools I'll just be working on it after hours and on saturdays etc.
Renegade3064 is offline  
post #10 of 14 (permalink) Old 12-09-2011, 12:25 AM
ADMIN/MAFIA
 
neeltburn's Avatar
 
Join Date: Dec 2008
Location: Evansville, IN
Posts: 4,834
Points: 56,507
Thanks: 302
Thanked 691 Times in 599 Posts
Garage
Not saying that staying stock isnt a good idea, but with the right P=pump mods, IE DVs and fuel plate coupled with the right size injectors, (say 5x12s) and a nice turbo with everything tuned correctly and timing set up right the neighborhood of seening 18- to low 20s mpg would be pretty easy.

"Only accurate rifles are interesting" -Townsend Whelen

2012 Ram 2500 Crew Cab Big Horn
6.7L 68RFE 4wd
Yeah its stock.
Edge Insight CTS / Line-X / Access Bed Cover
B&W Turnover Ball / Companion Hitch
Pac Brake Air Bags
On Board Air
Optima Redtop 34Rs


2010 John Deere 2305
2010 Jeep Wrangler JK Unlimited Rubicon/ Tuned with some toys.
2016 Keystone Impact 311 Toyhauler






9-11-2001 NEVER FORGET
neeltburn is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Diesel Truck Forum - TheDieselGarage.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Turbo Question(Tech Question) Liftedpsd 2003-2007 6.0L Power Stroke 7 09-16-2007 03:35 PM
Boost question, maybe MAP sensor question 6_Myles 1994-2003 7.3L Power Stroke 5 10-28-2006 12:42 AM
Edge Juice Question Question Jaadc01 General Ford Truck and Excursion 6 05-23-2006 12:40 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome