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 > Your search for 'cummins isb' found 24 matches.

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  Subject Author Date Posted Forum
RE: 2005 Monaco Dynasty vs 2007 Fleetwood Discovery

I would agree with Busskipper. What you didn't say, was haveyou personally looked at them? If so then I would think you would have seen a difference in quality, as I feel the Dynasty is a much higher end coach both in build and materials. Are the engines the same, the Dynasty will likely have an ISL Cummins, so compare engine models as a Cummins ISB or ISC will not be as good as the ISL. ISL has more hp and torque. As a retired truck driver with over 3 million miles, that engine should be good for 500,000 miles. Lots of trucks are doing that + and work much harder than any MH will. Price is an ask price, however to me seems in the ball park, just needs to deal on it. Dynasty's were a high end coach and offered many levels. My opinion would be to deal on the Monaco.
diplomatdon 03/12/17 03:02pm Class A Motorhomes
RE: Source Eng Fan ISC330

I put one on my Cummins ISB and noticed no difference at all. Its not worth the money as far as I'm concerned.
d_denver 03/04/17 06:00pm Class A Motorhomes
RE: Jake Brake

And to add to the confusion our 2002 Itasca Horizon with the 5.9 Cummins ISB, the switch is labeled "Engine Brake" but is in fact an Exhaust brake. Because most people do NOT know, or care to know, the difference between the two. Here is what matters....OFF: vehicle will coast, no cool sound. ON: Vehicle is "held"..cool GRRRRRRRR sound. kleenex, zerox, crock pot, jet ski, Jacuzzi, etc.... If it goes GRRRRRRRRRRRRRRRRRRRRR it has a JAKE BRAKE. You might add that some (engine brakes) are extremely noisy (by comparison to exhaust brakes) and why you see so many near village signs prohibiting this cool sound. As for the above nicknames, they describe products that are virtually the same, whereas an engine brake, differs dramatically from a compression brake. As for people caring, they care plenty, when pricing the difference of having the two installed.
tropical36 02/25/17 11:45am Class A Motorhomes
RE: Jake Brake

And to add to the confusion our 2002 Itasca Horizon with the 5.9 Cummins ISB, the switch is labeled "Engine Brake" but is in fact an Exhaust brake. Because most people do NOT know, or care to know, the difference between the two. Here is what matters: OFF: vehicle will coast, no cool sound. ON: Vehicle is "held"..cool GRRRRRRRR sound. kleenex, zerox, crock pot, jet ski, Jacuzzi, etc... (see where I am going with this)... If it goes GRRRRRRRRRRRRRRRRRRRRR it has a JAKE BRAKE.
cbshoestring 02/25/17 11:37am Class A Motorhomes
Need 2014-16 Holiday Rambler (Ambassador) Owners Opinion

Hey Folks, I'm looking at a 2016 Holiday Rambler Ambassador DP 38FS with 7K miles. We are upgrading from the gasser in our sig line. I am interested in your opinion on build quality and reliability based on your experience. Any HR late model owner feel free to chime in. This has the Cummins ISB 6.7 with the Allison 2500MH 6 speed transmission. Thank you in advance for your comments. Feel free to pm me if you wish not to post here. Keith.
Squealers 02/22/17 08:46pm Class A Motorhomes
RE: Jake Brake

And to add to the confusion our 2002 Itasca Horizon with the 5.9 Cummins ISB, the switch is labeled "Engine Brake" but is in fact an Exhaust brake.
Canadian Rainbirds 02/22/17 07:25pm Class A Motorhomes
RE: Jake Brake

I'm assuming your 425hp Cummins is an ILS which has an "engine" brake (commonly referred to as a Jake brake) as opposed to an "exhaust" brake (which can also be referred to as a Jake brake). Engine brake has two positions (Hi and Lo as you indicated) whereas an exhaust brake only has one position (on or off) and is commonly found in the Cummins ISB and ISC engines. It sounds like you have a separate on/off switch and then a secondary switch to determine which position. Does the position switch have a "neutral" position??? If yes, then turning on the first switch will not cause the engine brake to activate....only if the position switch is in the Hi or Lo position. As mentioned above, when you turn on the engine brake and have the position switch in either Hi or Lo, the transmission gear indicator should go from 6th to 2nd and will cause the transmission to down shift at certain rpms until it gets to 2nd gear. Once in 2nd gear and the coach continues to slow, at a certain rpm, the engine brake will disengage and allow the coach to coast. Not sure if this answers your question or not, but it should help you understand the function and operation of the engine brake. Ron
lanerd 02/22/17 04:33pm Class A Motorhomes
RE: Gas to diesel

We went from a Ford V10 gas coach to a Cummins ISB 300. I should point out the from a pure HP perspective the V10 was technically higher. That said the air ride and engine in the back is no comparison. Quiet ride (DW and I can actually talk) without engine noise and noticeably quieter ride is worth the extra cost. Not to mention the much greater tow capacity.
msturtz 01/02/17 10:15pm Class A Motorhomes
RE: Ford V10 revisions

Exactly. Take a low torque Cummins ISB @ 300HP/600TQ and the same MH with a Cummins ISC @ 300HP/950TQ and go climb the Rockies. It will be very apparent what number means the most. Now take a 20 HP farm tractor from the 50s and compare it to today's 25HP lawn mowers and see which one gets the job done. And lastly, you cannot figure HP without torque - HP = RPMxTorque/5252. Torque is a constant, HP is just a calculation. For my money, I'll looking for torque first, HP second. If the two 300 HP engines are operating at their maximum power point of 300HP, they'll climb the rockies equally as well. The RPMs may well be different, of course. Tractors are trickier because they have different jobs (I would not find it at all convenient to mow my yard with a 1950's tractor, nor would I pull a hay wagon with a lawn tractor that lacks the weight and braking power to safely control it) and are sometimes talking of different ratings (drawbar power vs. engine output power). If you really do want only torque for your motorhome engine, all you need to do is put a gear reduction between your engine and your transmission and you can have all the torque you want, as your formula demonstrates. You could then adjust your axle final ratio to compensate if you wanted. It wouldn't help the real world performance of your vehicle one bit, but you'd have gobs and gobs of torque on the spec sheet. Power is usually calculated from torque and RPM more because it's hard to measure directly, not because it's a less fundamental concept. Power is the rate of energy production or equivalently the speed at which work is done. Torque is merely rotary force; you can have torque with zero work and zero power. I've seen this myself when trying to remove stuck bolts and nuts; I apply as much torque as I can, but nothing moves.
DrewE 10/01/16 09:51am Class A Motorhomes
RE: Ford V10 revisions

Exactly. Take a low torque Cummins ISB @ 300HP/600TQ and the same MH with a Cummins ISC @ 300HP/950TQ and go climb the Rockies. It will be very apparent what number means the most. Now take a 20 HP farm tractor from the 50s and compare it to today's 25HP lawn mowers and see which one gets the job done. And lastly, you cannot figure HP without torque - HP = RPMxTorque/5252. Torque is a constant, HP is just a calculation. For my money, I'll looking for torque first, HP second.
Bruce Brown 10/01/16 05:04am Class A Motorhomes
Alliance filter globe

I have a 2011 Itasca 34Y with a Cummins ISB engine. I am looking for a place to purchase the globe that goes on the bottom of the Alliance 122-R50419 prefilter. I have not changed this filter before but it looks as if I would lose a lot less fuel (or get a lot less fuel on me) if I had a spare globe to install on the new filter before removing the old filter and globe. Any help in locating the globe or a better way to change the filter would be appreciated. Thanks, Bob
Robert Allen 09/12/16 08:04pm Class A Motorhomes
RE: Diesel ?

It should be driven, extended operation at idle is not recommended. Much better to occasionally get on the road for 20 miles or more to warm everything up and clear carbon and circulate the fuel. Prior RV was 36' Dp with Cummins ISB. Annual maintenance was about $200 DIY oil and filters change, lube chassis. Every 2-3 years, Engine Air filter, and Air Brake filter added about $100 each.. Having service done by a shop reported to be about $1100+... 22.5 inch tires are in the $500-600 range each. But: The Rear engine diesel is quieter, more stable and comfortable to drive. My ISB consistently got 11+ mpg.
hooligan 09/11/16 01:01pm Class A Motorhomes
RE: Class A with the Cummins 275HP engine?

Peak torque on your engine is probably in the range of 1,600 RPM. Pulling a load below that RPM is lugging the engine and not good for it. Have you tried downshifting manually when your RPM has dropped to 1,800 or 1,900 RPM and running in the 2,300 to 2,500 RPM range when pulling those hills? That is the general operating strategy I use with my 300 HP, 600 ft lb torque at 1,600 RPM Cummins ISB/5.9 powered coach. Works well for me, give it a try.
Fleet Man 09/07/16 05:33pm Class A Motorhomes
RE: Cummins isb 5.9 cooling system

I'm about ready to go through the cooling system in my 2001 Damon ultrasport before my next trip. Cummins isb 5.9, 275 hp, 24 valve rear engine. I'll be replacing all hoses, thermostat, radiator cap and of course the coolant. I already have the hoses and coolant, but while looking for the cap and thermostat, I read where some were going with a different brand than the manufacturer and were happy. Anyone out here replace these with stant or another? regarding your question I tend to like OEM when it comes to rad caps and stats . cummins stuff is hard to beat their quality
usersmanual 08/31/16 10:53am Class A Motorhomes
Cummins isb 5.9 cooling system

I'm about ready to go through the cooling system in my 2001 Damon ultrasport before my next trip. Cummins isb 5.9, 275 hp, 24 valve rear engine. I'll be replacing all hoses, thermostat, radiator cap and of course the coolant. I already have the hoses and coolant, but while looking for the cap and thermostat, I read where some were going with a different brand than the manufacturer and were happy. Anyone out here replace these with stant or another?
aintnothin 08/31/16 10:34am Class A Motorhomes
RE: Used DP, Miles vs Years

Also be sure to give that a good test drive. That has the low torque Cummins ISB engine in it. For many it has enough power, I'd want more. It is a fairly light unit so it may be just fine, plus you should see some decent MPGs with it.
Bruce Brown 08/26/16 07:15am Class A Motorhomes
RE: towing a full size car

I just pulled my CCSB 2007 duramax pickup from phoenix to dallas, with 2200# in the bed. Total weight of truck is 9800#. My coach has a 275 cummins ISB. Pulls like a dream. You were only 4,800 lb over your pull rating. The weight police will be showing up to your house soon. :) Did it stop like a Dream? Didn't you Dream about better MPG?
Triker33 07/30/16 10:54am Class A Motorhomes
RE: towing a full size car

I just pulled my CCSB 2007 duramax pickup from phoenix to dallas, with 2200# in the bed. Total weight of truck is 9800#. My coach has a 275 cummins ISB. Pulls like a dream.
glamisorbust 07/30/16 09:21am Class A Motorhomes
Anyone chip a Cummins ISB 6.7 XT?

Lately we've done a few trips pulling our enclosed trailer with our VW Golf R in it. That adds up to a tow weight of 6900 lbs. so we are lacking power big time. Has anyone installed an aftermarket power chip or tune to their 6.7L Cummins? Curious to know if it would make a difference. Cheaper than a different coach and we love our Newmar.
katoomer 07/27/16 07:04pm Class A Motorhomes
RE: 1999 Fleetwood Discovery Class A Overheated

Please tell us what engine you have. That will make suggestions a lot more relevant. But, as already posted, anytime you have a performance issue with a diesel, new fuel filters is the inexpensive, easy first step. A 1999 Discovery has the Cummins ISB 275 HP engine in it with the Allison 3000MH transmission. Getting a manifold crack is common. I never have had mine bounce up and down at idle. So at a loss with that.
Triker33 07/25/16 11:45am Class A Motorhomes
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