Another ticking time bomb?

DiehardFordguy · Oct 2, 2015

Long story short. 6.4 killed two injectors, washed down cylinders. Block was beyond .030 so got a used block bored it .020 over, ceramic coated delipped decked pistons, colt stage 2 cam, new rockers, gaskets, rings, seals etc. 2 sets of injectors sent out for testing, used the best 8. Used the old hpfp. Rebuild has about 8k on it now still ticks. Curious if this tick is here forever or if there is something wrong. The tick is almost only when engine is hot, but intermittent.
https://goo.gl/photos/8WjyJ1SHmcSrkg2E9

golfer · Oct 3, 2015

What lifters?

And if you reused the stock rods did anyone check the piston pin to pin bore fitment in the small end?

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co04cobra · Oct 3, 2015

Why would you reuse the old hpfp?

pdumont01 · Oct 3, 2015

How bout lifters?? Seen a few make ticking noises.

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DEEZUZ · Oct 3, 2015

co04cobra said:
Why would you reuse the old hpfp?

+1...

DiehardFordguy · Oct 3, 2015

Side action lifters. No excuse on the hpfp except the guy who built said he thought it was good yet. Would a bad hpfp cause such a noise? I thought of rods too but would it be intermittent? I'll ask builder if he checked the rod to piston clearance.

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pdumont01 · Oct 3, 2015

I had a lifter make a sound like a midget in the block with a ball peen hammer at random. The customer brought it multiple times I never heard it so he made me drive it for a week and sure as chit I heard it, tore the engine down and it had a bad lifter and can, was able to save the block. I wondered how it wouldn't have made noise the whole time,...... I've never heard a hpp make a ticking noise, even when it was full of metal lol. What are side action lifters? A brand

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DiehardFordguy · Oct 3, 2015

Side Action Diesel. I think he sources them. Site sponsor.

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co04cobra · Oct 3, 2015

I don't necessarily think the hpfp is the ticking problem. However, I do think reusing the hpfp is a ticking time bomb..

What were done to the heads?

DiehardFordguy · Oct 3, 2015

The first set(job 1 overheated)were too cracked to use according to the cylinder head place local. I had another engine and he checked that set for cracks(magna?) and decked them I believe. He does the heads for the dealership in town. Not sure if that's good or bad. Lol

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TyCorr · Oct 3, 2015

Its haaard to find a machinist around here. Which is odd with the amount of diesel trucks in the area.

DEEZUZ · Oct 3, 2015

Hmm... Someone who re uses a HPFP that was on a motor where it melted down...

You wouldn't happen to be in Indiana would ya?

DiehardFordguy · Oct 4, 2015

Melted down? 235 on the temp gauge is melting? But no I'm from California.

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DEEZUZ · Oct 4, 2015

What do you think killed the injectors which in turn, washed down the cylinders? The HPFP. I agree it may not be your sound, but like stated, it's a matter of time before another injector sticks

DiehardFordguy · Oct 4, 2015

Yea the truck will get a new hpfp hopefully before it goes.. How are the remans? Are there new hpfps available? Is it never poor fuel? Or poor fuel tanks the hpfp, ruining injectors? Truck holds rail pressure fine, and always has.

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pdumont01 · Oct 4, 2015

Usually if you are on top of fuel filter changes a bad delaminating tank can be caught before it does damage.

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sideactiondiesel · Oct 4, 2015

What was PV clearance uppon assembly? Also did you check clearance on the oil squirters ?

DiehardFordguy · May 26, 2016

Bumping a really old thread. Truck is sold. What it turned out to be was the cam gear on the Colt cam. Builder didn't get it on properly. I should have asked first (I thought he knew) do you guys usually weld them? He said he didn't think that was the right way.. He's more oem style guy.

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6.4f350 · May 26, 2016

DiehardFordguy said:
Bumping a really old thread. Truck is sold. What it turned out to be was the cam gear on the Colt cam. Builder didn't get it on properly. I should have asked first (I thought he knew) do you guys usually weld them? He said he didn't think that was the right way.. He's more oem style guy.

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When I put mine on, I put the cam in the freezer for a day and stuck the gear in the oven at 450* for 30 minutes. The gear dropped right onto the cam and it only took about 5 seconds until you couldn't move it anymore. I can definitely see how it could get not seated properly, you don't have much time to get it on before it's stuck and you'd have to press it off again and freeze the cam for another day.

TyCorr · May 29, 2016

6.4f350 said:
When I put mine on, I put the cam in the freezer for a day and stuck the gear in the oven at 450* for 30 minutes. The gear dropped right onto the cam and it only took about 5 seconds until you couldn't move it anymore. I can definitely see how it could get not seated properly, you don't have much time to get it on before it's stuck and you'd have to press it off again and freeze the cam for another day.

Thats a pretty clever way to take advantage of metallurgy