Great explanation and I totally agree with you! Cummins will probably never admit to the problems they created. Please feel free to gift me you CH-100 line hone cabinet! I am currently building a cabinet that is that exact opposite of a Sunnen cabinet. I want the mandrel weight on the caps , not on the block.
lol i dont use the the line hone much but one of those thing you need to have, ya i have a jib i made to do the same thing, well i think i still have it lol
I know you posted this video a while ago, but I had a 2010 diesel pusher motorhome with the 6.7. At 55K miles, I had a valve come apart in pieces and the cummins shop said it went through the engine wrecking the cylinders. I ended up getting a long block because they said it was the recommended remedy. I have always wondered how that could happen. Cummins customer care would not help one bit.
Here's my take on why they haven't made the change. I get this information from one of the lead Cummins engineers over this territory in the southwest US El Paso district. They may make a change that will save them $0.50. you think 50 cents why would they make that change? When you consider how many engines for example that they build annually.. 50 cents on 15 million engines is a significant amount of money. Even if it cost them an additional 4million in warranty work, they're still coming out on top. And to the other person's point.. he's absolutely right the majority of them failed beyond the warranty. Now here's the interesting thing though which warranty.? Because if you buy a 6.7 Cummins from Cummins it has 150,000 mile warranty but Chrysler only offers a 100,000 mile warranty. Why? Because they get it at a reduced price for the volume. Sad but that's big business. THEY MADE A CHANGE IN THE WAY THE TIMING GEARS ARE MANUFACTURED ON THE ISX SERIES ENGINE. TOTAL SAVINGS FOR THAT PART WAS ABOUT $15 PER ENGINE. They produce over 30 million engines for the global market. Estimated increase in warranty cost for service 12 to 15 million. Great video Rob as always
Super helpful information Rob I've been looking for just this kind knowledge. Wanted to get a 2021 4500, but became a little shy after another rv hauler warned me of let's say 2018 and up. Do you see any valve / piston issues with 2017's ,?
the 2019 plus engine is complete different engine, i see the valve issue on the 2013-2018 engine , if it was me i would still away from the 2019 for the cp4 issues , but the 2020-plus seem to be good engine from the bit i have had to do with them, but if you do buy a 2020 + make sure you change to oil all the time, them have hydraulic lifters you don't want run down oil
Doing some research as my 2016 5500 is in the shop and they are saying possible new engine because they think a bad bearing on a piston rod. It only has 130,000 and I’m freaking out as I have taken emmaculate care of this truck, all maintenance etc. I can’t afford a new engine every 130,000. Any tips? I expected this truck to last me a long time. Zero issues until this. Bent rods twice, mechanics replaced rods and sent me down the road then 3rd time pulled over and was stranded with my horses. I only pull my horse trailer and drive 65 as that’s where I get the best fuel mileage.
I like doing all new seats. Better valve springs and get new exhaust valves. If the rod bearings are bad is werid unless it ran low in oil or it was on the cylinders the. Bent push rods are on
We just took our 2011 5500 apart, and Cylinder 2 dropped one of the exhaust valve seats. Would you recommend going all OEM for repair parts? Or is there aftermarket that would be suggested? We have 1 scored liner, and the head took a bit of a beating, as well as the piston is trashed.
Love your videos but when you put race tunes on these motors and drive it like you have five minutes to live.....ALPOT of 18-25 year olds,that doesnt help either...just my observation from my town
