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 > Cummins 5.9 diesel 275 h.p. Class A D.P. Input

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Triker33

Homestead, FL

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Joined: 11/30/2002

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Posted: 10/16/09 10:26am Link  |  Print  |  Notify Moderator

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The steepest grade I normally tackle is Monteagle in TN, and I can hold 60mph.

Why are you speeding up it? They have several Speed Limit signs that say 55 MPH is the Limit.

Mont Eagle I-24 TN 6% for 4 miles
Last May just for the heck of it I took my 5.9L ISB from bottom to top in 6th gear at 55 MPH. Near the top it did get up to 209 degrees.
I usually drop to 5th going up just to help with cooling.

I am around 26,100 lb. with Toad. Average MPG for this summer was 10.781.
I do have the 53 Block in mine that is 11 years 2 months old now. No problem yet.

Most problems with the 53 seems to happen to the ones mounted in the Ram Trucks.
Something to do with the way the mounting points are different then with a MH.

The 275 HP has 660 ft. lb of Torque unless it has a 4-5 speed then it will be usually 600.

And add on a Banks PowerPack
Your LB. to Torque or HP ratio will probably be better then some of those with the heavy MH 400HP/1200 ft lb that you can pass going up hills.


Larry Full Time Since 99
1999 34Q Discovery DP ISB 275HP 6 Speed Allison
DataStorm SatMax5 | VMSpc | Pressure Pro
14 Lincoln MKS EcoBoost Toad

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03FatBoy

Crossville, Tn.

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Posted: 10/16/09 11:26am Link  |  Print  |  Notify Moderator

Nascar, we had a '99 Endeavor with the 5.9 prior to our current coach. Sure liked the mpg that we got with that engine better than our current 8.3. It had plenty of power for me and after all, climbing hills is not constant, but I could run pretty much as fast as I wanted all day long on the flat and get 10.5 to 11 mpg. I would think that with the current cost of fuel that might be a consideration point?


Melissa & Steve (MNC USNR retired)
FMCA F335327, GS
'05 HR Ambassador 36PDD, Saturn Vue Toad
8.3L Cummins w/ 6sp Allison

hershey

Albuquerque,(fulltime) NM, USA

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Posted: 10/16/09 11:59am Link  |  Print  |  Notify Moderator

Climbing a 6% grade at 55 miles per hour and 60 mph???????? You guys weigh 4000 lbs more than me and are towing a 1000 lb heavier toad????
Lets must say, you got the only two 270 hp diesels in the world that can do that. If you decide to trade for a newer MH,make sure you have the old engine pulled and installed in the new MH.


hershey - albuquerque, nm
Someday Finally Got Here
My wife does all the driving - I just get to hold the steering wheel.
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J Walker

Oakton, Va

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Posted: 10/16/09 12:15pm Link  |  Print  |  Notify Moderator

Triker33 wrote:


I do have the 53 Block in mine that is 11 years 2 months old now. No problem yet.

Most problems with the 53 seems to happen to the ones mounted in the Ram Trucks.
Something to do with the way the mounting points are different then with a MH.


I also have a 53 block. Cummins says that only a few percent go bad if that means anything. Other discussion has related failures to heavy acceleration and going up grades aggressively. I know one person that had a 53 go bad in a MH. So far nine years and 60,000 miles I have had no problems from my block.


Jim Walker
2014 Thor Palazzo 33.2, 6.7 Cummins, 2100 Allison
2009 Malibu


h2oskierrick

Stanwood, WA

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Posted: 10/16/09 11:07pm Link  |  Print  |  Notify Moderator

Nascar,

We own a 1998 Holiday Rambler Endeavor 37WDS that tops out weight wise around 27500. The 5.9 does great and we are typically pulling a 4100lbs boat. While not rocket it does very respectable and only slows down in the mountains going over Stevens Pass in Washington State. Pulling our boat in the mountains I usually get about 8 MPG. With our TOAD out of the mountains I get between 10 and 11. Very reliable and plenty of power. I personally wouldn't hesitate if you found a clean well maintained rig.

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