Aug 20, 2009 · I expect the ISB Cummins in this era to be 275HP or 300HP. I thought that I had read somewhere that when Cummins boosted the ISB to 300HP they created some problems. …

Apr 19, 2015 · Our Cummins ISB, 260 HP, 5.9L, 24 valve diesel derated a few years ago when the radiators (regular and CAC) became plugged up. I brought it to the Cummins Rocky …

Sep 23, 2009 · Hi all, We just bought a new (to us) 2002 Journey 32DL with a Cummins 300 and Allison 6 speed ~64k miles. Mid-way home from the midwest to the west coast (1900 miles) …

Jul 23, 2014 · A fully formulated coolant is available and has the SCA added from the factory. There are other variations such as OAT lifetime coolants. Cummins has specific requirements …

May 31, 2018 · Still in search for motorhome and have question about Cummins 340hp 660 ft-lbs. ISB. We are looking at 2012 Tiffin Red's and see they use same engine in 34ft model as in …

Jan 22, 2008 · say compare a 300-325 ISB Cummins with a 325 CAT - years 2005-2007. any further input for me? I still like the 32pbd Cayman/Neptunes, but am more open now to a 34'. …

Aug 6, 2017 · I'm considering a Thor Aria 3901 that comes with the cummins ISB XT 6.7L. Is that enough power/torque for that size (about 35,000 GVW). Supposed to tow another 10,000 lbs.

Dec 22, 2005 · I've owned 3 coaches with cummins diesels, a 230hp B, a 325hp mechanical C, and now a 350hp ISC. All of them have been great engines. My current ISC now has about …

Jul 19, 2009 · I have a 2002 Expedition and it overheats when the temp is over 90 and we are going up a grade. We down shift to keep the rpms up but then in 3rd it starts to what would …

May 21, 2013 · An ISB nearly always has a rear radiator cooling system, and that can make access to the oil filler tube a real pain, so have a flexible spout funnel handy. Check out your …