Go Back   iRV2 Forums > MOTORHOME FORUMS > MH-General Discussions & Problems
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 07-20-2016, 08:05 AM   #71
Senior Member
 
Pa Miller's Avatar
 
Monaco Owners Club
Vintage RV Owners Club
Join Date: Feb 2015
Location: East Texas
Posts: 432
The 5.9b 12valve with 7100 fuel pump and 3060 Alison is a awesome combination to me and the millage per tank always surprises me too!!!
__________________

__________________
1995 Monaco Dynasty
32' B5.9 Banks, 6 speed Alison 3060
2008 HHR Panel toad
Pa Miller is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 07-20-2016, 08:51 AM   #72
Senior Member
 
greystroke's Avatar


 
Monaco Owners Club
Freightliner Owners Club
Holiday Rambler Owners Club
Join Date: Jul 2009
Location: Spring Hill, Florida
Posts: 1,150
Quote:
Originally Posted by Pa Miller View Post
The 5.9b 12valve with 7100 fuel pump and 3060 Alison is a awesome combination to me and the millage per tank always surprises me too!!!
I have the first electronic version of the 24 valve ISB 5.9L and my economy varies 9-12. Cummins computer reads out 10.1 for 100000.
MD3060 tranny. Believe it . It is true. My toad is 4000.
__________________

__________________
98 Endeavor DP, ISB275
RX300, Falcon II hitch, BB Vantage Select
VMSpc, 2002 Grey Ford Powerstroke
TST 507 w/ 10 Sensors
greystroke is offline   Reply With Quote
Old 07-20-2016, 08:54 AM   #73
Senior Member
 
Pa Miller's Avatar
 
Monaco Owners Club
Vintage RV Owners Club
Join Date: Feb 2015
Location: East Texas
Posts: 432
Quote:
Originally Posted by greystroke View Post
I have the first electronic version of the 24 valve ISB 5.9L and my economy varies 9-12. Cummins computer reads out 10.1 for 100000.
MD3060 tranny. Believe it . It is true. My toad is 4000.
Thanks ... it's making a believer outa me... We love ours they should still be making them !!
__________________
1995 Monaco Dynasty
32' B5.9 Banks, 6 speed Alison 3060
2008 HHR Panel toad
Pa Miller is offline   Reply With Quote
Old 07-20-2016, 08:58 AM   #74
Registered User
 
mel s's Avatar
 
Join Date: Mar 2010
Posts: 8,777
Quote:
Originally Posted by Pa Miller View Post
I can get 12 all day pulling my toad at 65 ....


Quote:
Originally Posted by Pa Miller View Post
The 5.9b 12valve with 7100 fuel pump and 3060 Alison is a awesome combination to me and the millage per tank always surprises me too!!!
Pa Miller
Good for you!
As you have seen 12MPG IS "unusual"...(Enjoy it).
Mel
'96 Safari, 8.5 MPG towing a Saturn ION
__________________
mel s is offline   Reply With Quote
Old 07-20-2016, 09:01 AM   #75
Senior Member
 
Pa Miller's Avatar
 
Monaco Owners Club
Vintage RV Owners Club
Join Date: Feb 2015
Location: East Texas
Posts: 432
Quote:
Originally Posted by mel s View Post
[/COLOR][/COLOR]



Pa Miller
Good for you!
As you have seen 12MPG IS "unusual"...(Enjoy it).
Mel
'96 Safari, 8.5 MPG towing a Saturn ION
Thanks Mel
__________________
1995 Monaco Dynasty
32' B5.9 Banks, 6 speed Alison 3060
2008 HHR Panel toad
Pa Miller is offline   Reply With Quote
Old 07-21-2016, 04:29 PM   #76
Senior Member
 
Cat320's Avatar
 
Fleetwood Owners Club
American Coach Owners Club
Join Date: Mar 2011
Posts: 4,495
12 mpg is great. You have a choice, small lighter coach and good mpg, or larger heavier coach with bad mpg.
__________________
2014 American Eagle 45T
DD 500
Pulling a Honda CRV
Cat320 is offline   Reply With Quote
Old 07-21-2016, 05:19 PM   #77
Senior Member
 
1ciderdog's Avatar


 
Join Date: Jun 2010
Posts: 4,309
I had a 28 foot 1991 Safari Trek on an Isuzu chassis powered by a four cylinder diesel. Got real good mileage but was slow on hills and limited on towing capacity. Kind of wish I still had it.
__________________
Bob, Sandi & Marmaduke the Big Pug
SW OREGON 2004 Journey 39K, 330 Cat
If towing: a 2006 Mini Cooper or 1995 Wrangler
1ciderdog is offline   Reply With Quote
Old 07-21-2016, 06:03 PM   #78
Senior Member
 
Piker's Avatar
 
Join Date: May 2011
Posts: 1,287
Quote:
Originally Posted by Pa Miller View Post
The 5.9b 12valve with 7100 fuel pump and 3060 Alison is a awesome combination to me and the millage per tank always surprises me too!!!
Agreed.

I'm one of those spreadsheet geeks... so below is the data from our last trip.

I used a constant for gallons per hour of generator fuel in order to try and separate the fuel usage of the cummins from the onan... The generator manual says .9gph is the fuel usage at full load. There is nothing in the manual that says what no load usage is, but I have read it's probably around .3gph. It's a 7500kw diesel... it's not the inverter type that regulates rpm based on load... It runs 1800 rpm all the time. I settled on an estimate of .5gph to run the generator.

As you can see... over the course of our 7500 mile trip, the cummins averaged 11.3mpg. FYI... For every .1gph change you make up or down on the generator, you get a .2mpg change up or down (respectively) on the cummins.

For further reference... our rig is 35' long and weighs 19,000 empty (well... with me in it). We do not pull a toad.

You can see how it's impossible to check mileage on a single tank. The trip mileage ranges from 9.4 to 13.5... The reason is because on a large fuel tank (ours is only 90 gallons) you can easily be off perhaps 10 gallons from one fill up to the next depending on how level you are sitting at the station. You have to take a running average... and if you can... make the starting and ending fill ups at the same pump.

-cheers

__________________
1994 Holiday Rambler Endeavor LE - Engine Rebuilt and Restoration in Process
Piker is offline   Reply With Quote
Old 07-21-2016, 07:50 PM   #79
Senior Member
 
Pa Miller's Avatar
 
Monaco Owners Club
Vintage RV Owners Club
Join Date: Feb 2015
Location: East Texas
Posts: 432
Wow Piker !! lot of good info there I like stats too..... I have a place I fill up every time we return from a little over 800 miles my tank suppose to hold 130 gals I keep it full .. What engine and tran are you running !!
__________________
1995 Monaco Dynasty
32' B5.9 Banks, 6 speed Alison 3060
2008 HHR Panel toad
Pa Miller is offline   Reply With Quote
Old 07-21-2016, 07:58 PM   #80
Senior Member
 
Pa Miller's Avatar
 
Monaco Owners Club
Vintage RV Owners Club
Join Date: Feb 2015
Location: East Texas
Posts: 432
Quote:
Originally Posted by Cat320 View Post
12 mpg is great. You have a choice, small lighter coach and good mpg, or larger heavier coach with bad mpg.
True Cat , I do most all the work on mine..... got to be ready to roll when the boss says so... lol I guess it's all about what you need or want in a coach .. We have adapted to our small one perrty good for just the two of us.. Hope fuel prices stay down for about 25 years lol !!! Planning on putting a lot more miles on this one !
__________________
1995 Monaco Dynasty
32' B5.9 Banks, 6 speed Alison 3060
2008 HHR Panel toad
Pa Miller is offline   Reply With Quote
Old 07-22-2016, 04:04 AM   #81
Senior Member
 
Piker's Avatar
 
Join Date: May 2011
Posts: 1,287
Quote:
Originally Posted by Pa Miller View Post
Wow Piker !! lot of good info there I like stats too..... I have a place I fill up every time we return from a little over 800 miles my tank suppose to hold 130 gals I keep it full .. What engine and tran are you running !!
It's the old 12valve MD3060 combo. I've tinkered with the engine a bit - slight adjustment to the AFC... machined the fuel plate to mimick a #10 TST... adjusted the boost up to 32 lbs... and made the exhaust "free flowing." Just based on TST's charts, I'm guessing its around 300hp now. Give or take. Runs really good... the #10 is tuned a little hot for a 10 ton rig, so I do have to watch the EGT gage. To make sure I don't cook anything, I wired a buzzer up to the EGT gage that goes off when it starts to get too hot. Works slick. I saw no noticeable drop in fuel economy when I made the changes... but to be fair, I didn't have a spreadsheet before the changes.

In my mind, I kind of like the smaller class A's for maneuverability. I can go pretty much wherever I want and don't feel the need for a toad. Although maybe someday I'll pull a toad just for fun... but that's down the road a ways...

-cheers
__________________
1994 Holiday Rambler Endeavor LE - Engine Rebuilt and Restoration in Process
Piker is offline   Reply With Quote
Old 07-22-2016, 07:01 AM   #82
Senior Member
 
Pa Miller's Avatar
 
Monaco Owners Club
Vintage RV Owners Club
Join Date: Feb 2015
Location: East Texas
Posts: 432
Quote:
Originally Posted by Piker View Post
It's the old 12valve MD3060 combo. I've tinkered with the engine a bit - slight adjustment to the AFC... machined the fuel plate to mimick a #10 TST... adjusted the boost up to 32 lbs... and made the exhaust "free flowing." Just based on TST's charts, I'm guessing its around 300hp now. Give or take. Runs really good... the #10 is tuned a little hot for a 10 ton rig, so I do have to watch the EGT gage. To make sure I don't cook anything, I wired a buzzer up to the EGT gage that goes off when it starts to get too hot. Works slick. I saw no noticeable drop in fuel economy when I made the changes... but to be fair, I didn't have a spreadsheet before the changes.

In my mind, I kind of like the smaller class A's for maneuverability. I can go pretty much wherever I want and don't feel the need for a toad. Although maybe someday I'll pull a toad just for fun... but that's down the road a ways...

-cheers
Same combo as mine , if you ever do pull a toad ours pulls the HHR like's not even there ... Have a great day !
__________________
1995 Monaco Dynasty
32' B5.9 Banks, 6 speed Alison 3060
2008 HHR Panel toad
Pa Miller is offline   Reply With Quote
Old 07-22-2016, 09:11 AM   #83
Registered User
 
mel s's Avatar
 
Join Date: Mar 2010
Posts: 8,777
Quote:
Originally Posted by Piker View Post
The trip mileage ranges from 9.4 to 13.5...
Piker


The overall MPG of my coach is just over 8.5, (actually 8.525 MPG).

That overall MPG was calculated by dividing the total number of miles I've driven my coach, (148,427), by the number of gallons of diesel fuel I purchased (17,411).

How many miles per gallon does your coach get overall?

Mel
'96 Safari
__________________
mel s is offline   Reply With Quote
Old 07-22-2016, 06:00 PM   #84
Senior Member
 
Piker's Avatar
 
Join Date: May 2011
Posts: 1,287
Quote:
Originally Posted by mel s View Post
Piker


The overall MPG of my coach is just over 8.5, (actually 8.525 MPG).

That overall MPG was calculated by dividing the total number of miles I've driven my coach, (148,427), by the number of gallons of diesel fuel I purchased (17,411).

How many miles per gallon does your coach get overall?

Mel
'96 Safari
When I say the "trip mileage" I'm referring to just the miles between each fill up... as if using the "trip" meter on your odometer. It varies because of the amount of fuel you can actually get into the tank at each fill up.

The "Engine Mile Per Gallon Running Average" column recalculates the average fuel economy at each fill up. After 7461 miles, we measured 660.1 gallons of fuel through the Cummins... the average then is 11.3 for the Cummins.

There was an additional 61.3 gallons of diesel that is estimated to have run through the generator over the 122.6 hours that we used it on this particular cross country venture... you can see that the column at the end is labeled "overall mpg running average..." this recalculates (at each fill up) the average miles per gallon and includes whatever fuel the generator used. This turned out to be 10.3 on the spreadsheet.

I guess I could have labeled the columns a little more descriptively for everyone...

-cheers
__________________

__________________
1994 Holiday Rambler Endeavor LE - Engine Rebuilt and Restoration in Process
Piker is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
RV miles per gallon, who wants more? mr mike iRV2.com General Discussion 27 07-20-2015 05:01 PM
Amps per hour? Horsepower per hour? BatteryPro Going Green 5 02-23-2015 06:04 PM
$3.99 per gallon diesel Dennis Lind Country Coach Owners Forum 6 04-28-2008 12:07 PM
Miles Per Gallon ? Alarmguy Class A Motorhome Discussions 44 03-15-2006 01:40 PM
Mile per gallon.....400 Cummins rebelsbeach Winnebago Industries Owner's Forum 14 01-25-2006 02:07 AM

» Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 04:52 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.