Blown motor / broken flex plate 90K miles?

[eric_kurzhals]

My 2008 F250 6.4 broke while towing an open trailer and couple of race cars (about 6500 lbs) a week ago with 90K miles. It was serviced regularly by two race shops and was full of oil when it failed. Thrust bearings, brass and lots of junk in the oil, in addition to broken flex plate.

I've now heard that these problems are common on the 6.4. I'm thinking about selling the truck after the motor is rebuilt because I don't want to keep it out of warranty. I hate the way the Dodge Ram looks but the Cummins is supposed to be reliable, according to a few fleet mechanics I've talked with.

I wish Ford still offered the V-10 but I guess I'm out of luck there. Any advice?

[srjd]

I wouldnt say its common problem theres lots of 6.4 with high trouble free miles you could buy a cummins and the same thing happens...anyways sorry about your luck i hope it all works out for you

[04hdfatboy]

was the truck stock? What caused the blown motor?

[eric_kurzhals]

Cowles Ford in Woodbridge, VA has the truck now and is just starting to get into it. The truck was bone stock. I had the diagnostics software upgrade (and a full diesel check-out) done just before the recall program expired and about 500 miles before the failure, fortunately! I bought the truck used with 43K miles, and used it mainly for commuting with about 10 racing trips a year, hauling the trailer.

I'll post when I learn something more...

[eric_kurzhals]

Initial analysis was coolant in the oil. They are going to do a tear down next. The coolant gauge and oil level were all normal before it failed, so it will be interesting to see how it got there.

[Moto2four]

Cavitation in the water pump most likely. That can happen with high miles on stock ford gold coolant.

[04hdfatboy]

Originally Posted by Moto2four

Cavitation in the water pump most likely. That can happen with high miles on stock ford gold coolant.

Yup thats probably what happened.