Truckers' Trucking Forum | Largest Class A Message Board - The Premier Truck Drivers Forum!  

Trucker MySpace - Truckers Making Friends. Chicken Truckers Come Meet Other Truckers!

Truck Trading Post - New Classified Ads Section! Post for Free, Sell Your Stuff Fast!




Go Back   Truckers' Trucking Forum | Largest Class A Message Board > The Garage > Trucks [ Eighteen Wheelers ]

Truckers' Trucking Forum/Message Board - The Premiere Truck Driver Forum

Trucks [ Eighteen Wheelers ] Roll On Big Mama. Forum/Discussion about Eighteen Wheeler Trucks. What truck do you like or dislike? Is your favorite truck a Mack, Peterbilt, Kenworth, Marmon, Volvo or Freightliner? Which diesel engine do you prefer; Detroit Diesel, Cummins, or...

Reply
 
Thread Tools Rate Thread Display Modes
  ^ Top   #51  
Old 2 Weeks Ago
Medium Load Member
 
Last Seen: 3 Hours Ago 02.05 PM
Member Since: Jun 2008
Location: Iowa, LA
Trucker? 35 Years
Posts: 627
My Trucking Photos: 0

Thanks: 228
Thanked: 87 Times
Quote:
Originally Posted by Jfaulk99 View Post
On a side note while it may be "proven" that 22.5LP get bet better fuel mileage. (not sure what the actual improvement would be, mpg wise) they also make about 31 more revolutions per mile than a full size 24.5 which means they will wear out sooner. So without doing any real experiments or hard math I'd say if you take any fuel mileage improvements and subtract the tire wear it may kill any advantage. BUT 22.5's are cheaper BUT they have a lower weight rating if you haul heavy, I blew 2 and gave up on them. It definitely wouldn't be worth buying new wheels and tires just for a fraction of MPG improvement.
I tend to agree with you on the "wear out sooner" point, but am going to paraphrase something I read awhile back; it just doesn't make sense.
Taken from Heavy Duty Trucking, out of an article on "specing trucks for fuel mileage". A rep from a major tire manufacturer stated that "due to the compound put in the smaller diameter and lo- profile tires, there is not a lot of difference in the tread life of a 22.5 tire compared to a 24.5", he also stated that the difference in tire replacement cost was less a factor than brand/type of tire and price shopping.

Although I DO believe that two identical trucks, one with 24.5, & one with 22.5, run for, say a million miles, the 22.5 equipped truck will cost less to run, (tires & fuel). Less rolling resistance = better MPG; and cheaper purchase price for the smaller tire. I have a hard time using what the tire rep said as part of my argument. If the compound of the smaller tire lets it get almost the mileage of the taller tire, why not put that same compound in the taller tires?
If there is truth in this, could the reason be the fact that large fleets use the small tires, and evil O/Os use the biguns?
Reply With Quote
Remove This Ad By Registering. Join Our Truck Forum and Trucking Community For Free. Sponsored Links:

  ^ Top   #52  
Old 2 Weeks Ago
Bobtail Member
 
Last Seen: 1 Hour Ago 03.59 PM
Member Since: Jul 2009
Location: BC canada
Trucker? 16 Years
Age: 38
Posts: 15
My Trucking Photos: 0

Thanks: 1
Thanked 1 Time in 1 Post
The parts guy at cat told me that they are out of stock on the remans (10r7155) , so if i order a reman i will most likely get new(130-9710).
Your prices are better then i could get, I was quoted 1338 for reman plus 791 for core. Or $2359 for new. Keep in mind this is canadian.
Reply With Quote
  ^ Top   #53  
Old 2 Weeks Ago
Light Load Member
 
Last Seen: 8 Hours Ago 08.59 AM
Member Since: Dec 2007
Location: Tifton, Ga
Trucker? 5 Years
Age: 35
Posts: 63
My Trucking Photos: 0

Thanks: 5
Thanked: 2 Times
Quote:
Originally Posted by droy View Post
I tend to agree with you on the "wear out sooner" point, but am going to paraphrase something I read awhile back; it just doesn't make sense.
Taken from Heavy Duty Trucking, out of an article on "specing trucks for fuel mileage". A rep from a major tire manufacturer stated that "due to the compound put in the smaller diameter and lo- profile tires, there is not a lot of difference in the tread life of a 22.5 tire compared to a 24.5", he also stated that the difference in tire replacement cost was less a factor than brand/type of tire and price shopping.

Although I DO believe that two identical trucks, one with 24.5, & one with 22.5, run for, say a million miles, the 22.5 equipped truck will cost less to run, (tires & fuel). Less rolling resistance = better MPG; and cheaper purchase price for the smaller tire. I have a hard time using what the tire rep said as part of my argument. If the compound of the smaller tire lets it get almost the mileage of the taller tire, why not put that same compound in the taller tires?
If there is truth in this, could the reason be the fact that large fleets use the small tires, and evil O/Os use the biguns?
It probably has something to do with the LP tires having less flex (hence rougher ride) and the taller tires need a different compound to make them wear right with the flexing. Just a guess. I agree with your reasoning though, it definitely makes since to order a spec'd right for 22.5's if you can, otherwise run what ya got. I think it's more important to have it spec'd right for whatever tires you have, but ideal if you can spec right with 22.5LP.

Mr. Haney, any reason for me to think about a cam upgrade in the 6NZ down the road? Or just better keep it stock and run the 58 injectors and upgraded turbo/ecm?
__________________
2001 FLT Columbia, 500hp C-15 CAT, 13-spd Eaton, 24.5LP w/3.73 rears
Reply With Quote
  ^ Top   #54  
Old 1 Week Ago
Light Load Member
 
Member Since: Dec 2008
Location: Blizzard, South Dakota
Trucker? No Answer
Posts: 193
My Trucking Photos: 0

Thanks: 4
Thanked: 38 Times
Quote:
Originally Posted by SpeedRacer View Post
Mr. Haney, any reason for me to think about a cam upgrade in the 6NZ down the road? Or just better keep it stock and run the 58 injectors and upgraded turbo/ecm?
I like the cam upgrade, because I find that the soot level drops in the oil. This tells me that more air is making it into the cylinder for a better combustion cycle. I also see about a 1/2mpg increase in fuel mileage with the cam I recommended. I've never had anybody I know use the 130-9710 cam to get feedback from. I've been told this cam is worth 50 Hp on a chassis dyno and doesn't create a lopey idle when used with larger injectors.
Reply With Quote
  ^ Top   #55  
Old 1 Week Ago
Light Load Member
 
Last Seen: 1 Day Ago 06.48 PM
Member Since: Apr 2009
Trucker? 21 Years
Age: 41
Posts: 51
My Trucking Photos: 0

Thanks: 1
Thanked: 2 Times
Quote:
Originally Posted by Mr. Haney View Post
I like the cam upgrade, because I find that the soot level drops in the oil. This tells me that more air is making it into the cylinder for a better combustion cycle. I also see about a 1/2mpg increase in fuel mileage with the cam I recommended. I've never had anybody I know use the 130-9710 cam to get feedback from. I've been told this cam is worth 50 Hp on a chassis dyno and doesn't create a lopey idle when used with larger injectors.
Mr haney is bang on with his cam selection, i've gained near 1/2 mpg, and soot is down according to my spinner.
Reply With Quote
  ^ Top   #56  
Old 1 Week Ago
Light Load Member
 
Last Seen: 8 Hours Ago 08.59 AM
Member Since: Dec 2007
Location: Tifton, Ga
Trucker? 5 Years
Age: 35
Posts: 63
My Trucking Photos: 0

Thanks: 5
Thanked: 2 Times
Quote:
Originally Posted by smokin809 View Post
Mr haney is bang on with his cam selection, i've gained near 1/2 mpg, and soot is down according to my spinner.
My soot runs 0.4 now on my samples running the Gulf Coast Filter. I don't know if I'll go much lower. If I was to reduce soot though, I may be able to extend my change intervals out even farther.

I'm definitely going to keep my eye on the soot as I make any changes. Oils samples are invaluable, and I swear by the GCF.
__________________
2001 FLT Columbia, 500hp C-15 CAT, 13-spd Eaton, 24.5LP w/3.73 rears
Reply With Quote
Remove This Ad By Registering. Join Our Truck Forum and Trucking Community For Free. Sponsored Links:

  ^ Top   #57  
Old 1 Week Ago
Medium Load Member
 
Last Seen: 3 Hours Ago 02.05 PM
Member Since: Jun 2008
Location: Iowa, LA
Trucker? 35 Years
Posts: 627
My Trucking Photos: 0

Thanks: 228
Thanked: 87 Times
Quote:
Originally Posted by swaan View Post
The parts guy at cat told me that they are out of stock on the remans (10r7155) , so if i order a reman i will most likely get new(130-9710).
Your prices are better then i could get, I was quoted 1338 for reman plus 791 for core. Or $2359 for new. Keep in mind this is canadian.
I am totally ignorant about the American dollar / Canadian dollar thing, and am sure that if it was good economics, all you guys north of the fence would be doing it; but what about ordering the cam from the main store in Peoria, IL? Does shipping and tariffs kill any savings, or is it the dollar exchange thing, or maybe a combination?
My price, with sales tax for the cam and core was $1764.81; almost $600.00 less than your quote. A nice chunk of change, no matter what country you're in.
Reply With Quote
  ^ Top   #58  
Old 1 Week Ago
Medium Load Member
 
Last Seen: 3 Hours Ago 02.05 PM
Member Since: Jun 2008
Location: Iowa, LA
Trucker? 35 Years
Posts: 627
My Trucking Photos: 0

Thanks: 228
Thanked: 87 Times
Quote:
Originally Posted by Mr. Haney View Post
I like the cam upgrade, because I find that the soot level drops in the oil. This tells me that more air is making it into the cylinder for a better combustion cycle. I also see about a 1/2mpg increase in fuel mileage with the cam I recommended. I've never had anybody I know use the 130-9710 cam to get feedback from. I've been told this cam is worth 50 Hp on a chassis dyno and doesn't create a lopey idle when used with larger injectors.

As I stated earlier, I feel the cam replacement had a lot to do with my increase in MPG; but because of other mods, (like the new flash file in my ecm), the turbo, etc, I am sure the cam replacement is not solely responsible.
Had another injector replaced last week; #3 had went out, apparently not all at once. My mileage had dropped to a low of mid 5, to a high of 5.9, and really couldn't hear a engine miss. I figured this was due to the water in fuel problem our terminal was fighting. After replacing the bad injector, I made two trips,
(1) Lake Charles, LA to Waxahachie, TX
(2) Lake Charles to Valdosta, GA.
Three fill ups for the two trips gave me 6.07, 6.19, and 6.39; (average of 6.2166). Yes, I'm aware it was mostly flatland running, and just three fill ups, but after seeing averages of 4.8-5.0 when I first purchased the truck, the grin on my face as I put up the calculator shows how I feel about the work done to my engine, and the added power is a big bonus.
Reply With Quote
The Following User Says Thank You to droy For This Useful Post:
Big Duker (1 Week Ago)
  ^ Top   #59  
Old 1 Week Ago
Light Load Member
 
Last Seen: 1 Day Ago 12.43 PM
Member Since: Feb 2009
Location: guymon, ok
Trucker? 5 Years
Age: 33
Posts: 83
My Trucking Photos: 0

Thanks: 1
Thanked 1 Time in 1 Post
Blakesreman.com out of denver is showing an exchange price of 650 for the pn 10r7155
Reply With Quote
  ^ Top   #60  
Old 1 Week Ago
830hp C16's Avatar
Medium Load Member
 
Last Seen: 1 Hour Ago 03.53 PM
Member Since: Jun 2008
Location: New Zealand
Trucker? 20 Years
Age: 39
Posts: 636
My Trucking Photos: 0

Thanks: 107
Thanked: 92 Times
I am also very interested in doing a cam change looking in my service manual the C-15,C-16 and the C-18 with part number 201-2677 all have a exhaust lobe of 8.515mm and the C-15 and C-18 have the same inlet of 9.702mm with the C-16 being 9.431mm.
Injector lobes are all much the same C-15 10.471mm,C-16 10.451mm, C-18 10.451mm.

My question is the only difference must be the duration how do you find this out????
__________________

THERE IS NO SUBSTITUTE FOR CUBIC INCHES
Reply With Quote
Reply

Truckers' Trucking Forum/Message Board


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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 On
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Trucker Forum Replies Last Post
Advice for a Old hand getting back into the truck redfang Questions From New Drivers 10 05.21.2008 06.09 PM
Your Advice and Opinions Wanted rndixon1960 Questions From New Drivers 16 12.26.2007 10.37 AM
I need some advice about US Xpress Justlivin Questions From New Drivers 4 06.22.2007 10.03 PM


.


vBulletin Forum Software, Copyright ©2000 - 2008, Jelsoft Enterprises Limited.
Copyright © TheTruckersReport.com - Trucking Forum & Message Board - Truck Driver Discussion - Truck Forum

Trucker Forum Disclaimer: All content, information and opinions (collectively, the "Material") presented on Our Trucker Forum Discussion Board at TheTruckersReport.com are those of the authors of posts and messages (collectively, the "participants") and not The Truckers Report. The Truckers Report does not guarantee the reliability, completeness, accuracy, timeliness or up-to-date-ness of the material presented on the Truck Driver Forum. The material is published "as is," and does not represent the official views and opinions of The Truckers Report or any company. Any reliance upon the Material presented on these forums shall be at User's own risk. The Truckers Report does not review the substance of the content posted by users on these forums and is therefore not responsible for any of such content. The Truckers Forum merely provides a space for its users to express and exchange their own opinions. Privacy Statement.


Search Engine Friendly URLs by vBSEO