BS Hauler
New member
It almost looks like a fuel contamination issue with water.
How much blame does Navistar share?
Sounds like the reman motors are recycling pistons.
Sounds like the reman motors are recycling pistons.
had a ford reman show up today, all new pistons
I believe stock pilot injections are up to 50-60° so maybe it's that? Also the post injections probably are late enough to be outside the bowl.I'm not a 6.4 guy and haven't done but a handful of jobs on them but do all of them have that big of a spray pattern on the pistons with stock tuning? Usually I don't see spray patterns that far outside of the fuel bowl unless it's running a hot tune with the 6.0s and 7.3s I've seen.....I'm not trying to imply anything I'm just curious.
I'm not a 6.4 guy and haven't done but a handful of jobs on them but do all of them have that big of a spray pattern on the pistons with stock tuning? Usually I don't see spray patterns that far outside of the fuel bowl unless it's running a hot tune with the 6.0s and 7.3s I've seen.....I'm not trying to imply anything I'm just curious.
I am currently rebuilding with Max Force delipped, coated pistons. I wish I had known all this before. And ford should be selling them with those pistons at the least. Tycorr gets it. The pistons are garbage. And yes I am confident the remans had used pistons. And yes I am towing a trailer behind this truck, again not over its weight limits. If any one has any repair bills, photos, anything I would sure like to hear from you. 724 288 6636, [email protected]
never saw a cracked 6.4 piston in person.(especially stock trucks) (mind you I am forget full)
#1 failure is lifters. (stock)
worn off rocker arms from lack of maintenance is second. (stock and tuned)
Have had rods outside block due to hydrolock from failed egr cooler. (stock, dually)
had piston pin wear out. (*******)
front cover cavitation taking out bearings, resulting in so much crank end play that the ring gear chewed into the transmission case. (stock service truck)
bent rod and hole burnt through piston. (h&s xrt pro)
melted pistons, with all injector tips blown off. (sct livewire)
only cracked piston ive had was on a 7.3. that had gone through multiple turbo's (factory with a banks waste gate, chiped (piggy back chip on pcm, on a 550 service truck that a 12,000 lb jack would not lift the ass end). so not exactly the pistons fault.
7.3 with failed lifters, 6.0l failed lifters, but 6.4 is the most prone to failed lifters.
7.3 with loose cam retainment plate bolts (took out cmp sensors) (econoline)
7.3 with cylinder porosity (econoline)
7.3 idi failed oil cooler resulting in coolant contamination of the oiling system
7.3 dusting, 7.3 piston pin worn out due to missing oil squirter
6.0l with slipped crank trigger wheel
6.7 with failed lifter, however the engine had a short block replaced previously by a hack dealership, so cant conclusively blame the lifter as there were so many things wrong with that engine assembly (bolts wrong places, etc. basic hack job)
So funny thing is I have seen some weird ****, but not cracked pistons. ive seen reman engines come with cracked heads, half the cylinder wall with no cross hatch, etc.
back ground ive worked on 7.3's while they were under warranty so ive been around for a couple years.
With that said, a tuned truck needs a wider bowl, I like my ih pistons
I can't believe you havent seen cracked pistons. ive seen more cracked pistons than i can count... and up there where you say the bent rod and hole in piston (xrt pro), likely was a hung injector. i have seen that on stock six fours a ton as well.
Unless he eorks one of those places where they dont actually repair 6.4s other than external diagnosis. Some ford dealers never opened up a 6.4. Their owner or service writer would swap full assemblies. My local dealership didnt even bother. They would call ford and they'd send an engine. Junk.
The third failure came with a $20,000 bill and a compete engine with another complete warranty. That is a complete drop in replacement, new pump, injectors, everything. 5 months and about 15,000 miles later if fails again. I tow it 800 miles home to a dealer where I can take my time and be there daily to be sure it gets fixed right. At this point I still know nothing of the piston issues of the 6.4. The dealer promises to work with me to be sure the truck is warrantied and get it fixed correctly. They don't they refuse warranty and claim it to be a stuck injector due to bad fuel. I loose my cool and promptly tow it to a private owned diesel shop. Upon finishing the tear down it was found that a piston was simply cracked in half. No injectors stuck, nothing melted. It still had oil all over the piston and cylinder walls, and still had carbon on top of the pistons. Everything was fine just cracked in half, except for the fact that the idiots at the dealer left my fuel pump torn open so it corroded and bent the hell out of the compressor wheels on my turbo. We rebuilt the engine with the same injectors, had to use a new fuel pump, and did some other things. ******d it, studded it, ceramic coated the pistons, and tuned the truck down some.At the end of that paragraph you say "tuned the truck down some" What tune were you running before?