mine is in
Cargo Master
Joined: Dec 2003
Posts: 2,299
Likes: 2,060
From: Central MO
I felt the same way before my truck was deleted and tuned. It pulled anything I could put behind it with ease. But I read too many horror stories about stock 6.4's, so I did what I said I wouldn't do and I'm glad I did. The thing feels like it's on steroids. Fuel mileage went way up too.
but, like you, my radiator is starting to leak, and it needs all new tires. Plus, at 125k miles, I'm well out of warranty and I'm not willing to keep rolling the dice with the 6.4.
the timing couldn't have been better, right when the 2017's came out. Love it.
but, like you, my radiator is starting to leak, and it needs all new tires. Plus, at 125k miles, I'm well out of warranty and I'm not willing to keep rolling the dice with the 6.4.
the timing couldn't have been better, right when the 2017's came out. Love it.
Hotshot
Joined: Apr 2013
Posts: 10,133
Likes: 665
From: NH
Ace & Tom,
School me briefly on the problems of the 6.4L. You guys act like they are time bombs. My understanding is they are a decent engine that achieves poor fuel economy because it was Ford / Navistar's first go-round with a DPF and regens. What are the big failure points of these engines?
School me briefly on the problems of the 6.4L. You guys act like they are time bombs. My understanding is they are a decent engine that achieves poor fuel economy because it was Ford / Navistar's first go-round with a DPF and regens. What are the big failure points of these engines?
Thread Starter
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More Turbo
Joined: Oct 2016
Posts: 552
Likes: 22
Ace & Tom,
School me briefly on the problems of the 6.4L. You guys act like they are time bombs. My understanding is they are a decent engine that achieves poor fuel economy because it was Ford / Navistar's first go-round with a DPF and regens. What are the big failure points of these engines?
School me briefly on the problems of the 6.4L. You guys act like they are time bombs. My understanding is they are a decent engine that achieves poor fuel economy because it was Ford / Navistar's first go-round with a DPF and regens. What are the big failure points of these engines?
The motor has a ton of potential, but there are some weak areas, especially if you don't delete it. The strategy Ford used for regen was good in theory, but if you leave it stock it will eventually roast the motor. The temperature in the top end at the #7 and #8 get so hot during a regen that everything gets stressed and fails eventually. I've never had any of those issues, I deleted at 101k miles, but I feel better doing what I'm doing now.
Hotshot
Joined: Apr 2013
Posts: 10,133
Likes: 665
From: NH
valves grenade and take the motor with it. Oil coolers, poorly designed water seperator, fuel pumps, front cover, rockers etc…
The motor has a ton of potential, but there are some weak areas, especially if you don't delete it. The strategy Ford used for regen was good in theory, but if you leave it stock it will eventually roast the motor. The temperature in the top end at the #7 and #8 get so hot during a regen that everything gets stressed and fails eventually. I've never had any of those issues, I deleted at 101k miles, but I feel better doing what I'm doing now.
The motor has a ton of potential, but there are some weak areas, especially if you don't delete it. The strategy Ford used for regen was good in theory, but if you leave it stock it will eventually roast the motor. The temperature in the top end at the #7 and #8 get so hot during a regen that everything gets stressed and fails eventually. I've never had any of those issues, I deleted at 101k miles, but I feel better doing what I'm doing now.
I really do like how the 6.7L uses 32 individual pushrods instead of bridges.
Thread Starter
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More Turbo
Joined: Oct 2016
Posts: 552
Likes: 22
Thanks. Didn't know about valves...2011 6.7L had that problem also. Fuel pump is the Bosch CP3 - which can produce quite a bit more volume than the CP4.2 on the 6.7L. It is a good pump; many people going for high performance will use the CP3. As for regen, Ford is still using the same strategy of exhaust-stroke diesel injection into just cylinders on one bank...
I really do like how the 6.7L uses 32 individual pushrods instead of bridges.
I really do like how the 6.7L uses 32 individual pushrods instead of bridges.
but with that big fuel system and dual turbos, that motor is strong. It definitely sets me in my seat on launch, and especially going from 40-90mph. Wow. I can see why guys eventually blow them up when they race the too hard.
Cargo Master
Joined: Dec 2003
Posts: 2,299
Likes: 2,060
From: Central MO
Ace covered it pretty well, but most of the issues can be attributed back to the emissions equip. Most that delete don't have many issues, but deleting is just not something I feel I should do (though I would like to).
I don't live in fear that the truck is going to leave me stranded, I'm just fearful of the high cost to fix major issues as I approach and exceed 100k miles. I know my short trips are harder on it than most, so that doesn't help.
I don't live in fear that the truck is going to leave me stranded, I'm just fearful of the high cost to fix major issues as I approach and exceed 100k miles. I know my short trips are harder on it than most, so that doesn't help.
Hotshot
Joined: Apr 2013
Posts: 10,133
Likes: 665
From: NH
Ace covered it pretty well, but most of the issues can be attributed back to the emissions equip. Most that delete don't have many issues, but deleting is just not something I feel I should do (though I would like to).
I don't live in fear that the truck is going to leave me stranded, I'm just fearful of the high cost to fix major issues as I approach and exceed 100k miles. I know my short trips are harder on it than most, so that doesn't help.
I don't live in fear that the truck is going to leave me stranded, I'm just fearful of the high cost to fix major issues as I approach and exceed 100k miles. I know my short trips are harder on it than most, so that doesn't help.
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Cargo Master
Joined: Dec 2003
Posts: 2,299
Likes: 2,060
From: Central MO
I usually keep my vehicles for a quite a while (you've owned as many trucks in the past 3 months as I have in the last 18 years
), so I like them to be reliable and trouble free for the long haul. I will have had the '08 for 7-8 years when I trade her in for a '19 or '20. I plan to keep my next truck for 10 years or so. That's why I was considering going with the 6.2L this time around, but I'm feeling pretty comfortable about the 6.7L now. Emissions really hit the trucks hard for the '08-'10 trucks, but I think they've recovered completely with this second gen 6.7L.
Hotshot
Joined: Apr 2013
Posts: 10,133
Likes: 665
From: NH
Haha...well, you'll be pleased to know it's been the same Road King Classic motorcycle since 1999. Guess I keep bikes longer than trucks.
Cargo Master
Joined: Dec 2003
Posts: 2,299
Likes: 2,060
From: Central MO
BTW, I was just giving you a hard time and didn't mean anything negative with my comments.
Hotshot
Joined: Apr 2013
Posts: 10,133
Likes: 665
From: NH
No offense taken! I probably deserve the hard time on the truck purchase frequency.
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More Turbo
Joined: Oct 2016
Posts: 552
Likes: 22
I would have a lot easier time trusting the 6.7 than I would the 6.4. I believe the engine would be fine, but I'm not willing to risk it with that motor.